Author: Rob Reynolds

Rheem RTGH-95DVLN Review

Overview

Rheem RTGH-95DVLN is a top-notch water heating solution that runs on natural gas and provides unlimited hot water supply to your entire family. It is a simple to use heater that comes with a remote control panel for setting the output water temperature. You may also use it to display fault codes. With up and down arrow buttons you can change the default water temperature setting that is set on 110deg F to 120deg F. This heater comes with a stainless steel condensing heat exchanger and is 94% efficient. Rheem RTGH-95DVLN is an ENERGY STAR rated heater. Operating at 199,000BTUs, this is a high performance tankless water heater and the industry’s best offering for low .26 GPM min flow rate along with .40 GPM min activation flow rate. This Rheem heater contains a 2-pipe direct vent system, which connects up to 5ft of 2” PVC pipe or 35feet of 3” PVC pipe.

Some Key Features

  • Stainless steel condensing heat exchanger makes the heater 94% energy efficient
  • Increased efficiency and safety with Intelligent electronic controls
  • AHRI third party efficiency listed
  • 2-pipe direct vent system that connects up to 5-Feet of 2-Inch PVC Pipe or 38-Feet of 3-Inch PVC Pipe
  • Low Nox model
  • Installation and servicing made easy with self-diagnostic system
  • Temperature setting and maintenance codes easily viewable through digital display
  • Heater comes with a built-in electric blower
  • Equipped with Guardian overheat Film Wrap/OFW
  • To connect two tankless units the heater comes with an EZ link cable
  • -30deg F Freeze protection
  • 120V power cord included in indoor models

The Pros & Cons of the Rheem RTGH-95DVLN

Pros

  • The heater takes some time in heating water but when it does, the water gets very and stays hot, which is definitely a plus point
  • You may run a sink and one shower or 2 sinks with 2 showers and a dishwasher or three bath/showers, this heater will perform exceptionally well at all applications
  • The heater offers virtually silent operation and quickly delivers hot water
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    Installation is fairly straightforward and simple
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    Compact size of this heater is perfect for limited space
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    The heater exceeds ENERGY STAR requirements as it is 94% energy efficient and reduces regular energy bills to up to 30%
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    The heater gets activated without turning the water on high temperature
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    These are compatible with low flow fittings

Cons

  • Installation is tricky and it requires help of a professional to fit the heater
  • The heater takes lot of time in heating water as compared to other heaters
  • User manual could have been more detailed

Installation

The installation manual comes with the unit and can also be downloaded from Rheem website. The unit’s requirements include minimum NG pipe size with 3/4inches diameter. This means you will have to replace the original 1/2inches gas line that usually is compatible with tank type gas heaters.You need to mount it on the wall so that the vent pipes could directly go through the wall. To make the installation easier you may purchase the RTG20220 valve kit that comes with hot water pressure relief valve. For the inputs and exhausts you must use the 3inch PVC connections.

Conclusion

Rheem RTGH-95DVLN 9.5 is a reasonably good option if you want to buy one heater that serves hot water demand of a large family or a home having three bedrooms. You can use it as an excellent solution for dishwashing, bathing and performing tasks that require hot water. Rheem is a reliable brand that is famous for state-of-the-art heating, cooling and water heating solutions for both domestic and commercial usages. Its products are of high quality always and the company maintains quality at every step that is, from raw material delivery to assembling of the final product. This is why you can rely upon RTGH-95DVLN 9.5 and buy it without any hesitation.

You can buy the Rheem RTGH-95DVLN on Amazon.

Rheem RTGH-84DVLN Review

Overview

The Rheem RTGH-84DVLN is a top-notch water heating solution that runs on natural gas and provides unlimited hot water supply to your entire family. It is a simple to use heater that comes with a remote control panel for setting the output water temperature. You may also use it to display fault codes. With up and down arrow buttons you can change the default water temperature setting that is set on 110deg F to 120deg F. This heater comes with a stainless steel condensing heat exchanger and is 94% efficient. Rheem RTGH-84DVLN is an ENERGY STAR rated heater. Operating at 199,000BTUs, this is a high performance tankless water heater and the industry’s best offering for low .26 GPM min flow rate along with .40 GPM min activation flow rate. This Rheem heater contains a 2-pipe direct vent system, which connects up to 5ft of 2” PVC pipe or 35feet of 3” PVC pipe.

Some Key Features

  • Stainless steel condensing heat exchanger makes the heater 94% energy efficient
  • Increased efficiency and safety with Intelligent electronic controls
  • AHRI third party efficiency listed
  • 2-pipe direct vent system that connects up to 5-Feet of 2-Inch PVC Pipe or 38-Feet of 3-Inch PVC Pipe
  • Low Nox model
  • Installation and servicing made easy with self-diagnostic system
  • Temperature setting and maintenance codes easily viewable through digital display
  • Heater comes with a built-in electric blower
  • Equipped with Guardian overheat Film Wrap/OFW
  • To connect two tankless units the heater comes with an EZ link cable
  • -30deg F Freeze protection
  • 120V power cord included in indoor models

The Pros & Cons of the Rheem RTGH-84DVLN

Pros

  • The heater takes some time in heating water but when it does, the water gets very and stays hot, which is definitely a plus point
  • You may run a sink and one shower or 2 sinks with 2 showers and a dishwasher or three bath/showers, this heater will perform exceptionally well at all applications
  • The heater offers virtually silent operation and quickly delivers hot water
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    Installation is fairly straightforward and simple
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    Compact size of this heater is perfect for limited space
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    The heater exceeds ENERGY STAR requirements as it is 94% energy efficient and reduces regular energy bills to up to 30%
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    The heater gets activated without turning the water on high temperature
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    These are compatible with low flow fittings

Cons

  • Installation is tricky and it requires help of a professional to fit the heater
  • The heater takes lot of time in heating water as compared to other heaters
  • User manual could have been more detailed

Installation

The installation manual comes with the unit and can also be downloaded from Rheem website. The unit’s requirements include minimum NG pipe size with 3/4inches diameter. This means you will have to replace the original 1/2inches gas line that usually is compatible with tank type gas heaters.You need to mount it on the wall so that the vent pipes could directly go through the wall. To make the installation easier you may purchase the RTG20220 valve kit that comes with hot water pressure relief valve. For the inputs and exhausts you must use the 3inch PVC connections.

Conclusion

Rheem RTGH-84DVLN is a reasonably good option if you want to buy one heater that serves hot water demand of a large family or a home having three bedrooms. You can use it as an excellent solution for dishwashing, bathing and performing tasks that require hot water. Rheem is a reliable brand that is famous for state-of-the-art heating, cooling and water heating solutions for both domestic and commercial usages. Its products are of high quality always and the company maintains quality at every step that is, from raw material delivery to assembling of the final product. This is why you can rely upon RTGH-84DVLN and buy it without any hesitation.

You can buy the Rheem RTGH-84DVLN on Amazon.

Rheem RTG-64DVLN Review

Overview

Rheem RTG-64DVLN is a reliable and affordable solution for fulfilling your indoor water heating demands in all sorts of weathers. This innovative unit offers continuous hot water supply and happens to be highly energy efficient and space saving. It is a Natural Gas powered heater that has specifically been designed to be used indoors and thus, it is suitable for small and large families alike. The unit comes with a UMC-117 remote control and the EZ-link cable can connect two tankless units and lets them operate as one. The unit is highly advanced and equipped with intelligent electronic controls that optimize its reliability and user-friendliness.  AHRI listed it as third party efficient and the unit also qualify for federal tax credit.

Some Key Features

  • It can be directly vented indoor
  • 4 GPM flow rate and the unit offer 35-Degree Rise
  • Unit comes with 10-Feet of thermostat wire
  • Eco-friendly low Nox Version
  • Energy efficiency rate is 82% due to stainless steel condensing heat exchanger
  • For ensuring easy servicing and installation the unit has a self-diagnostic system
  • Digital display gives full control over temperature settings and maintenance codes

The Pros & Cons of the Rheem RTG-64DVLN

Pros

  • It is highly energy efficient and uses just half the amount of natural gas that a regular tanked water heater may use
  • The unit can aptly maintain a constant hot water supply without wasting energy by reserving hot water unnecessarily
  • It has been designed in a way that it offer very low nitrogen oxide emissions, thus, the unit is highly eco-friendly
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    The heater optimizes usability of the heater with its easy-to-read water temperature meter display through which users can evaluate how hot the water is that is being used and how ti adjust it according to the demand
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    Unit gets installed quickly and easily

Cons

  • In some units few of the primary parts that are essential for operating the unit are absent
  • Although installation is easy and quick but the heater needs several parts and pieces that are to be purchased separately from a hardware store and thus, increases the unit’s overall cost
  • One of the most common defect that is found in almost all tankless heaters is present in this model as well, which is that it heats water on a per minute basis and this means water temperature fluctuations can occur giving the users “cold sandwich effect”

Installation and Specifications

The heater can be installed manually because it comes with a thorough step-by-step guide for users. You need to install this heater with 7.6-cm/12.7-cm or 3-in./5-in. diameter Rheem-approved concentric venting pipe or a UL-approved Category III Coaxial Stainless Steel appliance venting pipe. The unit needs 3x5inch concentric B-vent and vent cap that is fixed on the outer portion. The unit comes with water valves which helps the heater maintain hot and cold water release. The unit also contains 10ft thermostat wire, digital remote control, and a 120V power cord. It has a built-in electric blower and exclusive Guardian OFW (overheat film wrap) and it connects to Metal Fab Inc., venting without needing an adaptor.

Specifications

Assembled Depth9-7/8"
Assembled Height25-5/8"
Assembled Width13-7/8"
Product Depth9-7/8"
Product Height25-5/8"
Product Width13-7/8"
Vent diameter3 by 5" Concentric
Water Connection Size3/4"
Finish FamilyWhite
Flow Rate @ 35 F Rise (gallons/min)6.4 gal (US)/min
Flow Rate @ 45 F Rise (gallons/min)5.6 gal
Fuel TypeGas
Gas Connection Size3/4"
Gas Product TypePoint of Use
Gas TypeNatural Gas
Indoor/OutdoorIndoor
Maximum Temperature (F)140
Minimum Activation Rate (gpm)0.26/0.40
Minimum Temperature (F)85
Product Weight (lb.)54 lb
Residential/Commercial/industrial UseResidential or commercial
ModelRTG-64DVLN
Total BTU150000.000
Water Connection LocationBottom
Water Heater FeaturesWall Mountable
Vent TypeIndoor Direct Vent

Common Problems

Missing parts is certainly one of the main problems that users can face and it also substantially affects the unit’s usability and affordability. However, since the drain is absent and the function is performed via vent therefore, the unit is very compact, advanced, and innovative and serves as an ideal heating solution for indoor usage.

Conclusion

There are several problems with this product, and the missing parts certainly put a damper on its usability, but that is not to say that the absence of these parts render the product unusable. The absence of the drain is made up for by the vent, and so this RTG model can still run fairly efficiently and can serve as an adequate water heating solution for your home, and certainly beats its tanked water heater competition, whilst being mostly on par with other tankless water heaters.

You can buy the Rheem RTG-64DVLN on Amazon.

Takagi T-H3-DV-N Review

Overview

This is one heater you need to get for your house. It supplies hot water endlessly when demanded either directly or indirectly. Apart from being used as a heating appliance, Takagi T-H3-DV-N can be used with hydronic heating systems, storage tanks, recirculation systems, and radiant floor systems. T-H3S series of Takagi tankless water heater range is highly efficient and offers Ultra-Low NOx condensing technology, which lets you use 3" PVC venting and ensure 0" clearance to combustibles.  With gas inputs of about 180,000BTU, it can be termed as the perfect residential heating application that can provide hot water for 2 to three bathrooms in warmer weather and two bathrooms in colder weather. The unit’s heat exchanger tubing has been created from HRS35 copper alloy and each unit comes with a remote control and up to 10,100ft certification. It is ENERGY STAR® approved and comes with 15-year heat exchanger limited warranty and 5-year parts limited warranty for domestic users. The unit has 0.95 energy factor for natural gas, flow rate is 8.0GPM at 35degree F. It is a risk-free and very secure unit since it has built-in mechanism for preventing overheating, freeze, surge protection, and also has troubleshooting diagnostic codes.

The Pros & Cons of the Takagi T-H3-DV-N

Pros

  • Unbelievably efficient with 10GPM hot water supply
  • The unit utilizes HRS35 commercial grade copper allow, which is great for transferring heat and corrosion resistance than the regular stainless steel option
  • Unit has sleek, compact and attractive design and can be fitted just about anywhere around your house
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    Eco-friendly heater that doesn’t produces high amounts of nitrous oxide and is SCAQMD certified
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    You can easily save a lot on your monthly natural gas bills because this heater doesn’t use natural gas constantly and don’t have a storage tank
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    The unit aptly tackles the problem of delayed hot water supply that is common among most tankless natural gas heaters because it pumps hot water directly into the pipe instantly thereby curbing the waiting duration from standard 2min to just 1/2 min.

Cons

  • Though it minimizes natural gas bills and also uses lesser amount on a daily basis but when it heats the water, the amount of natural gas utilized is 4 to 5 times higher than tanked heaters. This means the unit requires specialized gas lines for handling such a high volume of natural gas
  • Need for additional components and high quality pipes increases the expenditures and hike the unit’s price
  • The fact cannot be ignored that this product from Takagi is very expensive

Installation and Specifications

Installation wise this unit is very user friendly. The package contains an illustrative user manual containing thorough step-by-step instructions for installing it. The heater is equipped with integrated controls and comes with a power cord and venting is done by Schedule 40 PVC, CPVC, PP, Category III stainless steel.  Since AO Smith is now the owner of Takagi therefore, it is necessary that you own the valve kit named AO Smith 9007604005 Isolation Valve Kit and to neutralize the acidic proportion of water in some regions users might also need to buy AO Smith 9007607005 Neutralizer Kit. However, since it is a condensing heater, so you don’t need stainless steel exhaust vents and PVC will be fine.

Specifications

Assembled Depth10.7"
Assembled Height22.4"
Assembled Width17.7"
Product Depth10.7"
Product Height22.4"
Product Width17.7"
Vent diameter3"
Water Connection Size3/4"
Finish FamilyWhite
Flow Rate @ 35 F Rise (gallons/min)5.65 gal (US)/min
Flow Rate @ 45 F Rise (gallons/min)6.95 gal
Fuel TypeNatural Gas/Propane
Gas Connection Size3/4"
Gas Product TypePoint of Use
Gas TypeLiquid Propane
Indoor/OutdoorIndoor
Maximum Temperature (F)140
Minimum Activation Rate (psi)15
Minimum Temperature (F)77
Pilot LightNo
Point-Of-UseYes
Product Weight (lb.)59 lb
Residential/Commercial/industrial UseResidential or commercial
ModelT-H3-DV-N
Total BTU199000
Water Connection LocationBottom
Water Heater FeaturesWall Mountable
Vent TypeSingle Wall


Common Problems

Takagi’s this product is although highly efficient as a condensing heater but such heater usually have the problem of generating slightly acidic condensate water. Even in this unit this problem occurs and you need to mount the device at a place where drainage is nearby since you need to drop a small hose into it. If there isn’t a drain nearby then you need to place a bucket underneath to provide outlet for the condensate. Overall, this model is excellent since many endemic problems of tankless water heaters have been eliminated in this one and the unit doesn’t cause any serious issues.

Conclusion

The Takagi T-H3-DV-N is an excellent tankless water heater. It does its job, and does it well, and is an improvement over the Takagi-T-KJr2-IN-NG product. That being said, the flaw in its design does hamper its efficiency somewhat, and the high installation costs must be taken into consideration whilst deciding whether or not to purchase this product.

You can buy the Takagi T-H3-DV-N on Amazon.

Takagi T Kjr2 IN NG Review

Overview

ENERGY STAR® qualified Takagi T-KJr2-IN-NG is a gas fired, compact, fully modulating, tankless water heater that is ideal for residential usage. The unit can easily produce sufficient hot water for two bathrooms with its gas input of 140,000BTU. The unit has less than 14 ng/J (<20ppm), which means it fully complies with Ultra-Low NOx regulations. T-KJr2-IN-NG is a multi-purpose heater that can be used with hydronic heating systems, storage tanks, radiant floor systems, recirculation systems and indoor heating applications for residences. The number of showers that the heater can handle relies upon ground water temperature. With just 0.82 natural gas energy factor and tendency of giving out a flow rate of 6.6GPM when temperature rises to 35degree F, this heater turns out to be the perfect option. It also comes with a remote control, built-in safety features like freeze/overheat/surge protection and troubleshooting diagnostics to avoid gas leakage, and a power cord.

The Pros & Cons of the Takagi T-KJr2-IN-NG

Pros

  • The unit turns off itself when overheating
  • To counter colder temperatures, the unit is equipped with a frost guard
  • High flow rates can be acquired by larger connections
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    Heater size is just 38pounds, which makes it ideal for indoor usage and installation
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    Since it is gas powered electricity consumption is not an issue and energy bills remain low

Cons

  • Heater can supply limited amount of hot water if used for two bathrooms
  • Installation is complex, expensive and tricky
  • Safety issues may arise if installation hasn’t been done properly
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    Limited warranty applicable only if a professional installs the unit
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    Some units create an annoying vibrating noise

Installation and Specifications

The unit already contains a remote control and a comprehensive step-by-step guide for installation. You will have to run a category III vent pipe and single wall or PVC won’t work. The unit requires a 3/4inch gas fitting and you need to ensure that the gas supply is sufficient enough to feed the unit. The heater has a power vent, which automatically adjusts gas consumption as per the demand and makes expanded horizontal venting possible. You will need to install a black glow preventer into the vent pipe if you reside at an area where temperatures can drop below 20degrees F. Since the unit requires double wall stainless steel exhaust vent, the cost may get higher.

Specifications

Assembled Depth6.7"
Assembled Height20.5"
Assembled Width13.8"
Product Depth6.7"
Product Height20.5"
Product Width13.8"
Vent diameter3"
Water Connection Size3/4"
Finish FamilyWhite
Flow Rate @ 35 F Rise (gallons/min)3.4 gal (US)/min
Flow Rate @ 45 F Rise (gallons/min)4.2 gal
Fuel TypeNatural Gas/Propane
Gas Connection Size3/4"
Gas Product TypePoint of Use
Gas TypeNatural Gas
Indoor/OutdoorIndoor
Maximum Temperature (F)140
Minimum Activation Rate (psi)15
Minimum Temperature (F)77
Pilot LightNo
Point-Of-UseYes
Product Weight (lb.)33 lb
Residential/Commercial/industrial UseResidential or commercial
ModelT-KJr2-IN-NG
Total BTU140000
Water Connection LocationBottom
Water Heater FeaturesWall Mountable
Vent TypeSingle Wall

Common Problems

You need to be very careful while installing the unit because a minor flaw or mistake such as a lose connection can cause serious damage due to gas leakage. It is the smallest available gas tankless heater model and is more appropriate for small homes such as for a family of five. If you can afford the high installation cost due to involvement of a professional then go for this eco-friendly, compact and efficient water heating solution.

Conclusion

This is a good choice of a tankless water heater to buy as installation is quite easy and it has received great reviews as being a heater that can support the needs of a family of five as opposed to other tankless water heaters that do not perform so well if the hot water needs are high. As for being environmentally friendly, the heater complies with Ultra-Low NOx regulations of less than 14 ng/J (<20ppm).

You can buy the Takagi-T-KJr2-IN-NG on Amazon.

Rinnai RUC98iN Review

Overview

Rinnai RUC98iN offers an attractive looking and very innovative as well as technologically sound water heating solution for indoor usage. It is a space-saving, sleek, compact and energy efficient unit that offers flexible venting options, that is, both concentric and twin pipe installations. This unit weighs 80pounds, contains MC-91-2US digital controller and operates on natural gas. Efficiency wise this heater is superior to other gas powered models with 9.8GPM flow rate. For indoor use both in commercial and residential areas, this unit is ideal because it supplies endless hot water supply. It is equipped with all the necessary trappings of tankless water heaters. 

Some key features

  • Versatile venting options i.e Concentric or PVC
  •  0.96 Energy Factor
  • Compact design and space saving attribute
  • Minimal NOx emissions
  • 199,000 max BTU

The Pros & Cons of the Rinnai RUC98iN

Pros

  • Its 0.96 energy factor ensures that it is an economical and efficient unit
  • Low carbon dioxide emissions makes it an eco-friendly option
  • Supplies hot water without interruption to multiple taps
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    Concentric/Twin pipe PVC Venting options in a single unit makes it highly innovative and usable
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    It utilizes 199,000BTU and produces around 9.8GPM hot water and therefore this product is suitable for large families
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    12 years heat exchanger , 5-years parts and one to five years after sales service warranty for domestic users and 5years heat exchanger, 5 years parts and 1-2 years servicing warranty for commercial users.

Cons

  • The unit is very sensitive and installation is rather intricate
  • The heater is expensive, which although is reasonable considering the high level of features that it offers, but many users cannot afford it due to the price tag
  • You will need the services of a professional and certified Rinnai repair personnel for repairing purposes if the unit breaks down

Installation and Specifications

The unit is so light weight and compact that you can easily install it anywhere and carry along whenever you need to shift its position. You can install it anywhere around the house or your commercial property and offices since the unit offers two different venting options in a condensing water heater design. Rinnai is the only brand that offers both concentric and PVC venting option in a single unit, which adds to the heater’s usability and user-friendliness. You don’t need to have an adaptor and the package includes everything that you may require for installing it. Since it has two different venting options therefore assembling becomes easier and

Specifications

Assembled Depth10"
Assembled Height26"
Assembled Width18.5"
Product Depth10"
Product Height26"
Product Width18.5"
Vent diameter0"
Water Connection Size1/2"
Finish FamilyGray
Flow Rate @ 35 F Rise (gallons/min)9.8 gal (US)/min
Flow Rate @ 45 F Rise (gallons/min)9.5 gal
Fuel TypeGas
Gas Connection Size3/4"
Gas Product TypePoint of Use
Gas TypeNatural Gas/Propane
Indoor/OutdoorIndoor
Maximum Temperature (F)140
Minimum Activation Rate (gpm)0.4
Minimum Temperature (F)98
Product Weight (lb.)70.5 lb
Residential/Commercial/industrial UseResidential or commercial
ModelRUC98iN
Total BTU199000.000
Water Connection LocationBottom
Water Heater FeaturesWall Mountable
Vent TypeSingle Wall

Common Problems

Like other gas powered tankless heaters, this unit is also not free from problems. The cold sandwich effect is a problem that might occur since the heater is unable to maintain constant hot water backup and thus, you have to wait for about two minutes to get hot water pouring in consistently. Moreover, the high price of this heater makes it an expensive option for a majority of families. Nonetheless, if you can afford it then it is an ideal solution to meet all sorts of your hot water demands without compromising on size, weight, design and innovation. The unit is also environmentally friendly and is a good choice for large families.

Conclusion

All in all, the Rinnai Tankless Water Heater is a fantastic way to meet all of your hot water needs without having to resort to bulky, costly and environmentally unfriendly tank water heaters, and will ensure that the days of rationing hot water based on whatever needs it most are a thing of the past. Hot water when you want it, where you want it and however much of it you want, and all for only $200 more than the standard tank heater which will pay for itself with all of the money you will save in the long run.

You can buy the Rinnai RUC98iN on Amazon.

Rinnai RL75iN Review

Overview

Rinnai is a well-known and reliable brand that always manages to introduce top quality, efficient and innovative tankless water heaters. RL75iN is not different. Rinnai RL75iN is a powerhouse of amazing features and far superior to other models in technology domain. This heater runs on Natural gas and has a contemporary and sleek outlook that easily can be fitted to any nook and corner of your house. Unlike traditional tanked models, this heater doesn’t need electricity supply or a blizzard of pipes and tubes for operating and producing hot water. The minimum gas rate that it utilizes is 10,300BTU and maximum rate is 180,000BTU. It is an eco-friendly product that already meets the NOx emission standards of Texas and California. RL75iN energy factor is 0.82, which means it is around 82% energy efficient. This heater comes with a digital remote control that is equipped with Error Code Indicator. This indicator notifies the user about any probable issues that need immediate attention and fixing.

The Pros & Cons of the Rinnai RL75iN Natural Gas Heater

Pros

  • Since it is gas powered you can easily save a lot of money on your utility bills
  • This model doesn’t have a water tank and the water is heated only when you demand it which makes it a feasible option if you want to save energy resources
  • Its noiselessness is an important advantage because even if you have installed it in your bedroom the heater run literally noiselessly
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    The fact that this heater produced 7.5Gallons hot water per min is highly impressive
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    Installation is fairly simple and easy which becomes even more simplistic with the very useful and helpful DIY setup guide. The guide provide detailed information about the components and tools required and relays the complete installation process in a step-by-step style

Cons

  • The unit uses less natural gas in comparison to tanked heaters but one key drawbacks is that it more natural gas than some other more efficient models
  • Just like other models of tankless water heaters, this unit also cannot supply hot water instantly and continuously and the probability of cold sandwich effect cannot be overlooked

Installation and Specifications

You can easily install it yourself using a DIY approach since the package comes with an elaborative and easy to comprehend user manual. However, we would recommend that you get professional help especially if you don’t have any prior experience with natural gas heaters. You need to use only the listed and tested exhaust/combustion air vent and not any other one. The unit utilizes outdoor air for combustion, which makes it very safe to be used for residential purposes. RL75iN has direct vent sealed combustion that lets the unit to be easily installed in bedrooms, kitchens and bathrooms where conventional B-Vent water heaters cannot be fitted. However, the heater offers limited capacity as far as termination of vent is concerned and you must check installation manual to ensure the required limit.

Specifications

Assembled Depth9.3"
Assembled Height23"
Assembled Width14 "
Product Depth9.3"
Product Height23"
Product Width14"
Vent diameter0"
Water Connection Size3/4"
Finish FamilyGray
Flow Rate @ 35 F Rise (gallons/min)7.5 gal (US)/min
Flow Rate @ 45 F Rise (gallons/min)7.5 gal
Fuel TypeGas
Gas Connection Size3/4"
Gas Product TypePoint of Use
Gas TypeNatural Gas/Propane Gas
Indoor/OutdoorIndoor
Maximum Temperature (F)140
Minimum Activation Rate (gpm)0.4
Minimum Temperature (F)98
Product Weight (lb.)45.6 lb
Residential/Commercial/industrial UseResidential or commercial
ModelRL75iN
Total BTU180000.000
Water Connection LocationBottom
Water Heater FeaturesWall Mountable
Vent TypeSingle Wall

Common Problems

Since it is highly efficient and utilizes more gas for heating water therefore, when the unit is operating the other natural gas outlets at home tend to work less efficiently because of the huge burden RL75iN imposes on gas supply. Another problem is that when you purchase this heater online, the warranty terms get affected and it becomes impossible to receive any kind of compensation or repairs from the manufacturer if you have purchased it online. However, considering the low gas consumption and smart technology that this model offers, it is a great deal for fulfilling hot water demand of a medium sized family.

Conclusion

Overall, the Rinnai RL57iN is a great way to get a constant water supply whilst saving on gas expenses, though this is a benefit of the tankless water heater system rather than this particular product. Problems with the warranty and other problems endemic to this technology make the Rinnai RL57iN less appealing than it should be.

You can buy the Rinnai RL75iN on Amazon.

Atmor AT 900 03 Review

Overview

Atmor AT-900-03 is an extremely efficient and energy saving water heater. You can easily get your regular electricity bill lowered to up to 30% through this unit. It provides an all-round solution for residents of cold regions because usually water heating is the second biggest energy expense for those households. This is a time-saving, energy-conserving and eco-friendly option. You can receive endless supply of hot water without wasting any time in waiting for water to heat-up. This unit is perfect for both residential and commercial usage. It has been elegantly designed so would look amazing wherever you install it in your home or office. Dimension wide the unit is 7.29x11.82x3.55” wide and weighs just over 3.4lbs. Atomr AT-900-03 has over-heat protection enabled and the unit can be easily mounted on the wall.

The Pros & Cons of the Atmor AT 900

Pros

  • Supplies hot water instantly when required
  • Doesn’t waste water at all because its heating mechanism don’t involve storing water
  • It is a compact and light-weight device so you can easily mount it at any nook or corner to keep it out of kids’ reach

Cons

  • This is not a plug-in tankless heater and therefore, needs to be installed
  • Installation can be tricky for those not familiar with electrical equipment and this means you may need help and assistance of experts to install it

Installation and Specifications

This heater needs to be mounted against the wall and most appropriate would be to install it somewhere out of sight and near the point of use such as under the sink. Installation wise, this unit is very user-friendly. Just got for 110v installation for which you will need a 30amp circuit breaker and 10AWG wiring.

Specifications

Assembled Depth7.29"
Assembled Height3.55"
Assembled Width11.82"
Product Depth3.55"
Product Height7.29
Product Width11.82
Water Connection Size0.5
Amperage (amps)27
Electric Product TypePoint of Use
Finish FamilyWhite
Flow Rate @ 35 F Rise (gallons/min)0.6 gal (US)/min
Flow Rate @ 45 F Rise (gallons/min)0.5 gal
Fuel TypeElectric
Indoor/OutdoorIndoor/Outdoor
Maximum Temperature (F)130
Minimum Activation Rate (gpm)0.5
Minimum Temperature (F)65
Point-Of-UseYes
Product Weight (lb.)3.4 lb
Residential/Commercial/industrial UseResidential or commercial
ModelAT-900-03
Voltage (volts)110
Water Connection LocationBottom
Water Heater FeaturesOverheat Protection,Wall Mountable
Wattage (watts)3000

Common Problems

A common issue that users of this unit face is related to the manufacturing of the housing because the wires can be connected only from the back and not from the sides or bottom. Even while installing through the back opening, the clearance is not enough and wires are required to be clamped in the opening instead of being run through it. However, on the positive side, this unit is a multi-purpose option for indoor usage. It is a durable product that ensures long lifespan and since it has been made from recycled material therefore, it is eco-friendly as well. You can save a lot of your money because it just heats water when you demand it.

Conclusion

This is definitely a good buy for the environmentally conscious as this is a model that doesn’t waste water and energy. It is also very practical as you can get an endless supply of hot water and only when you need it. It has a particularly long life span as it also does not allow for scale or mineral build up since the water it supplies reaches very high hot temperatures.

You can buy the Atmor AT 900 on Amazon.

Rheem RTEX 18 Review

Overview

The Rheem RTEX 18 model is equipped with a rugged copper and brass heat exchanger, which can withstand harsh water conditions. This heater ensures longevity, compactness and usability because its installation process is simple and it is slim and light weight. Due to its space saving design, you can install it at any nook and corner. Since RTE 18 heats water only when demanded therefore, its energy consumption is very low. Additional convenience is offered by its on-unit control system that allows easy temperature adjustments. On average this tankless water heater provides up to 5.0 GPM water and this unit is appropriate for two bathrooms in hot weather and one bathroom during cold climate. It is an ideal choice as a point-of-use application and perfect choice for homes, condos, apartments, hospitals, offices, boats, hotels and restaurants.

Features

  • Modulating power and On-Unit temperature controlling feature
  • Brass/Copper heat exchanger
  • Standby mode
  • LEDs indicate active element
  • Regular 1/2inches water connectivity
  • Around 3.51GPM constant flow of water guaranteed at 35degree Fahrenheit
  • Suitable for two bathrooms during summers and one bathroom during winters
  • 18KW heater requires a 240V electrical connection, two 40amp circuit breakers and 8gauge copper wiring
  • Energy efficient heater that warms water only when demanded
  • Space saving and light weight product
  • One year parts warranty, ten years heat exchanger warranty

The Pros & Cons of the Rheem RTEX 18

Pros

  • Highly energy efficient because it heats water when you demand it and therefore, it can reduce your regular electricity bills
  • Maximum flow rate offered is % gallons per minute, which is outstanding
  • On-Unit controlling feature helps in adjusting temperature
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    Easy to install and stylish design that fits virtually anywhere
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    This is a very reliable heating solution because there are no apparent complaints about leakage

Cons

  • This heater is not as easy to be installed by a novice simply because the unit doesn’t come with a user manual
  • Warranty is insufficient and many users complain about the short life of the heater and poor quality parts
  • Consumes lot of energy and while it is operating other energy consuming devices such as light bulbs start flickering
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    It is advertised that this model can supply hot water to two bathrooms but in reality if both shower and sink are in use then water becomes cold sooner than expected

Specifications

Assembled Depth3.25"
Assembled Height10.50"
Assembled Width11.25"
Water Connection Size1/2
Amperage (amps)75
Electric Product TypePoint of use
Finish FamilyGray
Amperage12.5
Color FamilyBlack,Blacks
Flow Rate @ 35 F Rise (gallons/min)3.51 gal (US)/min
Flow Rate @ 45 F Rise (gallons/min)2.73 gal (US)/min
Maximum Temperature (F)125
Minimum Activation Rate (gpm)0.4
Indoor/OutdoorIndoor
Power/Fuel TypeElectric
Indoor/OutdoorIndoor
Fuel TypeElectric
Wattage (watts)1500
Product Weight (lb.)12 lb
Residential/Commercial/industrial UseResidential or Comercial
Modelrte 18
Water Connection LocationSide
Wattage (watts)18000

Conclusion

This tankless water heater does its job well but finding its parts becomes a bit difficult after a while. Another drawback is that it requires two 40amp breakers. This makes it a bad choice if saving energy is your top priority as the unit will consume a lot of energy. Buy it if you require plenty of hot water or have a bigger family.

You can buy the Rheem RTEX 18 on Amazon.

Rheem RTEX 13 Review

Overview

Rheem is a renowned manufacturer of tankless water heaters (electric and gas). Rheem RTEX 13 has received appreciation and acceptance from consumers all over the world due to its space-saving design and efficiency. This energy star certified ingenious unit will not just supply warm water instantly on demand but the unit’s energy saving feature will let you reclaim both the unit & installation costs within 17 months. Its main features are:
  • On-unit heat regulation
  • LEDs direct active element
  • Contains Standby mode
  • Standard 1/2" water link
  • Durable brass/copper heat exchanger
  • Modulating power
The Rheem RTE 13 is a powerhouse when it comes to performance as it can heat upto 4gallon water per minute. It has been designed for indoor usage primarily homes, condos, offices, labs and/or hospitals.

The Pros & Cons of the Rheem RTEX 13

Pros

  • This tankless unit is very compact and space-saving.  Fits almost anywhere
  • The unit doesn’t store water inside and supplies hot water within seconds once the switch is turned on.
  • Heats up to 4gallons water per minute, which proves its efficiency
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    Energy-saving mechanism minimizes electricity bills
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    Doesn't require venting
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    Modulating heat exchanger prevents standby heat loss

Cons

  • The unit is not feasible for being used by large families because it cannot fulfil high demand for hot water
  • Additional components are required to be bought to enhance the unit’s functioning
  • It requires extra wiring and a 60amp circuit breaker

Installation and Specifications

The heater’s compact size makes it easy to be installed just about anywhere. The installation process is simple and easy. You don’t need to assemble different parts before mounting the heater because it is a single unit. All that needs to be done is to mount the device on to the wall and connect the pipes for water supply.

Specifications

Assembled Depth3"
Assembled Height10"
Assembled Width7.25"
Product Depth3"
Product Height10"
Product Width7.25"
Water Connection Size1/2
Amperage (amps)54
Electric Product TypePoint of Use
Finish FamilyGray
Flow Rate @ 35 F Rise (gallons/min)2.54 gal (US)/min
Flow Rate @ 45 F Rise (gallons/min)1.97 gal
Fuel TypeElectric
Indoor/OutdoorIndoor
Maximum Temperature (F)125
Minimum Activation Rate (gpm)0.4
Minimum Temperature (F)0
Point-Of-UseYes
Product Weight (lb.)8 lb
Residential/Commercial/industrial UseResidential or comercial
ModelRTE 13
Voltage (volts)240
Water Connection LocationSide
Water Heater FeaturesNo Additional Features
Wattage (watts)13000

Common Problems

Rheem RTE 13 is an efficient model and ideal for domestic usage but a few concerns are still there. Some of the units have inherent technical faults that potentially affect its performance. Another issue is that you require at least 3inch extra copper tubing that has to be passed on both the sides of the unit. If you have plastic piping then you will have to change it as well. Moreover, you need to have electricity service that can handle a 240v/60amp circuit breaker. The user manual states that unit requires 6ga wire but in reality it utilizes 8ga.

Conclusion

This water heater is perfect for small families. For larger homes it is also feasible but you will have to install two units to satisfy high demand. The energy-saving and eco-friendly feature of the unit makes it highly suitable for every household. Moreover, it is not very expensive in comparison to gas tankless units or tank heaters and you can easily reclaim the expenses afterwards by reducing monthly electricity bills.

You can buy the Rheem RTEX 13 on Amazon.