As the market for tankless water heater grows, selecting the one that suits your need became really hard. With all those options it can be tiring, catching up an all the advantages and finding your perfect heater at the reasonable price. Our top 10 list aims to provide you with all the needed information and ultimately help you to purchase the exact one that will suit all your needs.
Table of Contents
What is the best tankless water heater?
10. Rinnai RUC98iN Ultra
One of the best deals on the market to satisfy your needs is definitely this Rinnai model of a tankless water heater. It definitely steps up the game with its innovative condensing technology that promises to deliver more efficiency and assure greater power savings. As it includes the 95% thermal efficiency while delivering on the promise of 98° F to 140° F temperature. It definitely will spare you the trouble if you have it professionally installed as it is relatively complicated job. The risk of spending an extra thousand on the installation is worth the pay as you ran the warm water knowing it won’t fall apart the second you do.
- It includes Isolation Valves and Pressure Relief Valve
- Concentric or PVC venting option
- Ultra low NOx eemissions
- Relatively expensive professional installation
- No refund once after one year use
9. Takagi T-H3-DV-N
Definitely one of the most versatile tankless water heaters you can find on Amazon. With its on-demand usage of endless warm water, this model beats the quality at its price by the ultimate computerized safety features an most importantly, no pilot light to worry about. With the gas capacity to heat up to the 3 bathrooms in the colder climates this water heater is an excellent choice for every household as it provides relatively more than enough warm water to enjoy long baths and survive the cold temperatures.
- Ultra-low NOx emissions
- Space saving and compact design
- Gas inputs of 199,000 BTU
- Noisy unit with the annoying humming noise
- Terrible packaging so it will probably arrive damaged
8. Rheem RTGH-95DVLN
This model being one of the relatively cheap for the this quality range tops the reviews with its 94% Energy efficiency and advanced electronic controls designed to provide you with a certain safety and not to forget energy efficiency. Not only that this tankless water heater model meets the rigorous thermal energy industry standards but it is also frequently tested by a third-party tester to ensure your absolute satisfaction and ultimate efficiency for your accommodations. It takes about 5 hours to install it manually and the professional installation isn’t that expensive as well so that might be your option if you would rather to keep it all professional than to employ your hands.
- Easy installation guide
- Quiet unit unlike some one this list
- Continuous warm water supply
- Poor packaging and may arrive damaged
- No perceivable difference in a flow rate to the old models
7. Rheem RTG-64DVLN
As the previous Rheem model was more or less quite popular among Amazon reviews, this model has its advantages. Not only it has direct Vent indoor and UMC-117 remote control with the 10 feet of thermostat wire included but this is also a low NOx emission version of the previous model. It also uses Concentric Venting without the adapter and it comes with EZ-Link cable suitable for the higher demand application and if needed connecting two tankless water heater units to operate as one. Impressive model given it’s easily installed manually with the small technical assistance. Anyone with slight handyman knowledge can install it in few hours without assistance.
- Easy installation
- Money saving model
- Low NOx emissions
- Smaller model
- Not recommended to replace electric water heaters as they take more space and this one will not be easily adapted
6. Marey Power Gas
This model promises to deliver more than enough for the price, with the endless supply of warm water and the optimal energy efficiency, it is easy to install and includes the auto ignition as well. One of the differences is that this model is available in LP and natural gas versions respectively. It weighs approximately 21 lbs and the output is 3.1 gallons per minute. The advanced and innovative technology also is there to save water and energy which may cause a slight water reduction from time to time.
- Clear installing instructions
- Utilizes D cells to ignite gas
- LCD screen with digital temperature
- It doesn’t come with the regulator and hose
- Slow customer service
5. Ecosmart POU
Definitely a great choice when it comes to a selection of Eco smart water heaters, which saves you up to 60 % on your water heating energy costs. It also saves up to 12 cubic feet of the additional storage space with its compact design and the digital temperature display in 1-degre increments ideal for any household. It may be a bit compact on the water deliver as well as it delivers only 0.5 Gallon per minute. Although when sized properly this model promises to be an endless warm water supply.
- Compact size
- Includes 0.5 gpm sin aerator
- It automatically turns one once it detects the certain flow of water
- It takes a lots of time to install the unit
- Reduced heating due to the Eco smart technology
4. Atmor 13 kw/240v
Certainly a model for a single bathroom, delivering on both the sink and shower combination at the low cost with the recommended ideal flow rate 2.25 gallons per minute. Highly recommended with the water saver shower head for the ultimate results. It comes with 3 settings low, medium and high kW use. It also includes the pressure relief device. It is ideal for the small apartments as the model itself is not intended to heat more than a single bathroom.
- It can be mounted outdoors
- Works fine on the medium mode
- Great bid for the price
- It’s not very durable on the long-term
- Requires additional parts to be bought along with it
3. Eccotemp L5 Portable
With all the other Eco Smart models on this list, this particular model does deliver on the promise and provides you with 1.4 gpm with 2 D cell battery ignition. It has minimum flow of 0.3 Liters per Minute. It does however 20-80 PSI of the real water need pressure but overall this product is more than satisfying with the price it offers. It also comes with one year warranty and the shower nozzle/hose adaptable to most of the conditions.
- Easy setup and operation
- Lightweight model for easy portability
- Battery operated so it can be adapted to any environment
- Not deigned to be used indoors
- 20 minute maximum heating cycle
2. Rheem RTEX-13
This Rheem model comes with an external adjustable thermostatic control, easy to use overall and one of the rare Rheem models threaded for easy replacement with its simple installation manual and digital temperature display. It is one of the more professional models that offers you continuous warm water supply for multiple applications.
- LCD display
- Adjustable thermostatic control
- Efficient energy saver
- Electric model
- Takes up a lots of space
1. Stiebel Eltron Tempra
With the electric tankless heater model, one can only expect minimum energy savings but this model makes it up with its adjustable design that fits about anywhere and heats the whole house with no venting required. With its proven reliability and the digital temperature control this design is just the right quality at the right price and it saves up to 20% on the hot water portion of your electric bill.
- Advanced flow control
- Simple to install and use
- Great bit for the wallet
- Electric model
- Large power requirements
- Two independent electrical feeds needed
As for the overall look on these 10 models, we aimed to find you great quality products at the reasonable price range. So whether you’re looking to have warm water at your home, office of perhaps a cabin you should find your perfect model on this list. All of the products have been reviewed by Amazon consumer with the higher grade that expected. You perfect heater is among our selection, that you can be sure.