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I’m pretty sure you’re here to upgrade your water heater. But before that, have you ever thought of getting an under sink water heater? These devices are quite compact and they provide you hot water on the spot.
Efficiency and effectiveness are two of the most important things that you should look for when getting a water heater. So to make sure that you won’t get a faulty one. We compiled the best under sink water heaters that are available on the market.
1. Agust Under Sink Water Heater
Top Features:
- Fast recovery rate
- Energy-saving
- Compact design
Technical Details:
- Voltage: 110-120 volts
- Max temperature: 167℉
- Max pressure: 115 PSI
- Weight: 11.48 pounds
- Dimensions: 168 x 126 x 122.4 inches
The Agust Under Sink Water Heater is a durable water heater that is made of high-quality materials to ensure that the quality and protection functions work perfectly.
Reviewers really love this water heater. It works perfectly, the price is great, it heats up fast, and the overall functionality is fantastic.
A few reviewers complained that the instruction manual is a bit confusing. There are also a few reviewers who complained that the quality feels cheap.
The water heater’s dimensions are 168 x 126 x 122.4 inches. It weighs 11.48 pounds.
If you’re looking for a durable water heater, then this is for you!
View Agust Under Sink Water Heater on Amazon
2. thermomate Under Sink Water Heater
Top Features:
- Adjustable temperature
- Easy to install
- High thermal efficiency
Technical Details:
- Voltage: 120 volts
- Max temperature: 149°F
- Max pressure: 150 PSI
- Weight: 18.44 pounds
- Dimensions: 16.14 x 15.04 x 14.17 inches
The thermomate Under Sink Water Heater is a premium quality water heater that has an enamel coating to maximize its insulation and prevent leakage.
A lot of reviewers really love this water heater. It’s very easy to install, the size is nice and compact, the settings are easy to adjust, and overall it works nicely.
The water heater’s dimensions are 16.14 x 15.04 x 14.17 inches. It weighs 18.44 pounds.
If you’re looking for an adjustable water heater, then this is a great option for you!
View thermomate Under Sink Water Heater on Amazon
3. Thermoflow UT10 Water Heater
Top Features:
- Maintenance free
- Overheat protection
- Corrosion resistance
Technical Details:
- Voltage: 110-120 volts
- Max temperature: 167°F
- Max pressure: 150 PSI
- Weight: 14.72 pounds
- Dimensions: 18 x 11 x 12.2 inches
The Thermoflow UT10 Water Heater is an energy-saving water heater that is specially designed to be perfectly safe for use. It utilizes safety features to prevent overheating.
Reviewers really love this water heater. It heats up very quick, it’s very easy to install, the size is pretty good, and the safety features are nice and reassuring.
A few reviewers complained that the water heater’s relief valve is faulty. It has an unreliable design that caused it to leak so much.
The water heater’s dimensions are 18 x 11 x 12.2 inches. It weighs 14.72 pounds.
If you’re looking for safe water heater, then this is a great option for you!
View Thermoflow UT10 Water Heater on Amazon
4. BISELONG Under Sink Water Heater
Top Features:
- Easy to use
- Waterproof gasket
- Consistent hot water
Technical Details:
- Voltage: 220-240 volts
- Max temperature: 121℉
- Max pressure: 110 PSI
- Weight: 14.77 pounds
- Dimensions: 17.9 x 11 x 2.3 inches
The BISELONG Under Sink Water Heater is a tankless water heater that has wide applications. You can choose from two different colors.
Reviewers really love this water heater. It works perfectly just as described, it produces hot water instantaneously, and overall this water heater is definitely worth the bucks.
The water heater’s dimensions are 13.78 x 9.92 x 6.06 inches. It weighs 7.43 pounds.
If you’re looking for a tankless, under sink water heater, then this is a great option for you!
View BISELONG Under Sink Water Heater on Amazon
5. FRANKE HT-300 Under Sink Water Heater
Top Features:
- Great filtration system
- Convenient adjustment dial
- Stainless steel tank
Technical Details:
- Voltage: 120 volts
- Max temperature: 194℉
- Max pressure: 75 PSI
- Weight: 9.2 pounds
- Dimensions: 9.4 x 7.8 x 11.6 inches
The FRANKE HT-300 Under Sink Water Heater is a filtrating, under sink water heater that heats up water close to its boiling point. It has a convenient dial that helps you adjust the water heater conveniently.
A lot of reviewers really love this water heater. It works as advertised, it’s very easy to install, it’s very reliable, and overall the water heater works nicely.
A few reviewers complained that the water heater leaks a lot. There are also a few reviewers who complained that the customer service could be better.
The water heater’s dimensions are 9.4 x 7.8 x 11.6 inches. It weighs 9.2 pounds.
If you’re looking for a filtrating water heater, then this is a great option for you!
View FRANKE HT-300 Under Sink Water Heater on Amazon
Under Sink Water Heaters Comparison Table
| Product name | Voltage | Max temperature | Max pressure | Weight | Dimensions |
| Agust Under Sink Water Heater | 110-120 volts | 167℉ | 115 PSI | 11.48 pounds | 168 x 126 x 122.4 inches |
| thermomate Under Sink Water Heater | 120 volts | 149°F | 150 PSI | 18.44 pounds | 16.14 x 15.04 x 14.17 inches |
| Thermoflow UT10 Water Heater | 110-120 volts | 167°F | 150 PSI | 14.72 pounds | 18 x 11 x 12.2 inches |
| BISELONG Under Sink Water Heater | 220-240 volts | 121℉ | 110 PSI | 14.77 pounds | 17.9 x 11 x 2.3 inches |
| FRANKE HT-300 Under Sink Water Heater | 120 volts | 194℉ | 75 PSI | 9.2 pounds | 9.4 x 7.8 x 11.6 inches |
Under Sink Water Heaters FAQs
If you notice rust accumulating on the pipes and there are leakage caused by those rusted pipes. There are also cases where the water coming from the faucet is a bit murky, when that happens you should replace the water heater.
Yes, they are generally safe for use. As long as you follow the instructions correctly and you don’t make a mistake in installing the water heater.
You can’t check it physically, but you can go to the reviews section on Amazon. There are a lot of helpful reviews that may help you choose the best one for you.
