10 Reviews: Best Tankless Water Heaters (Sep 2023)
These tankless water heaters will fit nicely in your small space due to their sleek and compact form, allowing you to have continuous hot water without taking up valuable space.
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Eccotemp Systems LLC
|Product Name||Performance 36 kw Self-Modulating 7.03 GPM Tankles...||Performance Platinum 9.5 GPM Natural Gas High Effi...||Exterior 7.5 GPM Tankless Water Heater||L5 Eccotemp L5 Liquid Propane Tankless Water Heate...||IR288 v2 POU Infrared Electric Tankless Water Heat...||ECO 27 Electric Tankless Water Heater||Tempra 29 Trend Self-Modulating 28.8 kW 5.66 GPM C...||Tempra 24 Plus Whole House Tankless Electric Water...||2GWHAM Tankless Water Heater||2.4GPM Tankless Gas Water Heater|
|Features||Space-Saving Water Heater||High-Efficiency Water Heater||Outdoor Water Heater||Portable Water Heater||Easy Control Water Heater||Water Heater with Digital Temperature Control||Compact Design Water Heater||Sleek Design Water Heater||Quiet Water Heater||Safe Water Heater|
|FUEL TYPE||Electric||Natural Gas||Liquid Propane, Natural Gas||Liquid Propane||AC||Electric||Electric||n/a||Electric||Propane|
|MEASUREMENTS||3.5" x 21.6" x 18.25"||9.75" x 18.5" x 27.5"||27'' H x 18.5'' W x 10.5'' D||16.5'' H x 11.5'' W x 5.5'' D||17.3 x 11 x 3 inches||3.63 x 17 x 17 inches||4.625" x 16.625" x 14.5"||21.7 x 20.1 x 9.6 inches||14.5 x 17.8 x 14.6 inches||12.81 x 12.62 x 20.75”|
|WEIGHT||19 lbs||82 lbs||63 lb.||13.8 lb.||10.21 pounds||10.98 pounds||19 lb||16.1 pounds||21.2 pounds||27.6 lb|
|FLOW RATE||7.03 gal (US)/min||9.5 gal (US)/min||7.5 gallons per minute||1.5 Gallons Per Minute||n/a||3 gallons per minute||5.62 gal (US)/min||n/a||n/a||0.32 GAL (1.2L)/min|
|WATTAGE / VOLT||36000 Watts / 240 volt||120 volt||n/a||3 Volts||9 KW / 240 Volts||27000 Watts / 240 Volts||28800 Watts / 240 Volts||18000 watts / 208 Volts||n/a||n/a|
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It’s small and sleek, yet it’s a true lifesaver. A tankless water heater is designed to fit into a small space, allowing you to save valuable space in your home. Since there is no storage tank to deplete, this style of heater never runs out of hot water! Instead, you’ll have access to warm water on demand as you want. Well, the good news is, it even produces hot, scorching water 24 hours a day, seven days a week while simultaneously lowering energy bills, so it shouldn’t be overlooked, right? As a result, we’ve compiled a list of the 10 best tankless water heaters to consider. Read it, pick one, put it in your place, and relax with the hot water it provides.
Table of contents
- Frequently Asked Questions (FAQs)
- 10 Best Tankless Water Heaters: Eccotemp Systems LLC, EcoSmart, Furrion, GIRARD, Rheem, Rinnai, Sio Green & Stiebel Eltron
- Comparison Table: Best Tankless Water Heaters
- Recommendation to read
- Rheem Performance 36 kw Self-Modulating 7.03 GPM Tankless Elect...: Space-Saving Water Heater
- Rheem Performance Platinum 9.5 GPM Natural Gas High Efficiency ...: High-Efficiency Water Heater
- Rinnai Exterior 7.5 GPM Tankless Water Heater: Outdoor Water Heater
- Eccotemp Systems LLC L5 Eccotemp L5 Liquid Propane Tankless Wat...: Portable Water Heater
- Sio Green IR288 v2 POU Infrared Electric Tankless Water Heater: Easy Control Water Heater
- EcoSmart ECO 27 Electric Tankless Water Heater: Water Heater with Digital Temperature Control
- Stiebel Eltron Tempra 29 Trend Self-Modulating 28.8 kW 5.66 GPM...: Compact Design Water Heater
- Stiebel Eltron Tempra 24 Plus Whole House Tankless Electric Wat...: Sleek Design Water Heater
- GIRARD 2GWHAM Tankless Water Heater: Quiet Water Heater
- Furrion 2.4GPM Tankless Gas Water Heater: Safe Water Heater
Frequently Asked Questions (FAQs)
In case you don't know
How do I choose a water heater?
Consider the following:
1. Type of fuel. The fuel type or energy source you use for water heating will affect not only the annual operating costs of the water heater, but also its size and energy efficiency.
2. Dimensions. Make sure to select one that is a perfect fit for your space.
3. Energy efficiency. It is critical to understand how much electricity you will spend on the water heater by selecting the Volt and Wattage.
Should I turn my water heater off at night?
It is common knowledge that it is preferable to leave the hot water heater on all of the time rather than turning it on and off. But, in reality, you don’t need to heat your water all the time. Your immersion heater or boiler will heat stored hot water in a tank.
What is the standard size hot water tank?
Most homes have a water heater that holds between 40 and 60 gallons. Larger tanks are typically used in homes with a hot tub or other hot water requirements. Alternatively, you can follow one of the experts’ rules:
1. 30-40 gallons for 1 to 2 people
2. 40-50 gallons for 2 to 3 people
3. 50-60 gallons for 3 to 4 people
4. For groups of 5 or more people: 60-80 gallons
Which is better electric or gas water heater?
These are the two most common types of water heaters. Natural gas is used to generate the energy required to heat water in gas water heaters, whereas electric resistance coils are used in electric heaters. Both are suitable for installation in your home, but you should consider factors such as your energy bill and the efficiency of your entire family before deciding which one is best for you.
10 Reviews: Best Tankless Water Heaters (Sep 2023)
Rheem, a well-known brand, offers this space-saving water heater that is ideal for those with limited space. Don’t be tricked by its small size; it can provide hot water for up to 5 showers and 2 faucets, thus it’s ideal for the whole family. It has long-lasting and simple-to-replace heating elements, making it simple to maintain.
We live in a 2700 Square feet home in Florida with 4 bedrooms & 3.5 baths. We have your typical dishwasher and washing machine. We purchased the 27KW unit for our entire house. The installation was easy and instructions straight forward. The unit is able to heat the water through the entire house, even while 2 are showering and the dishwasher is running. Overall, we are very satisfied with this unit.
|MEASUREMENTS||3.5" x 21.6" x 18.25"|
|FLOW RATE||7.03 gal (US)/min|
|WATTAGE / VOLT||36000 Watts / 240 volt|
Rheem has come out with a high-efficiency tankless water heater that will save you over $1,100 in electricity expenses over the course of 12 years. It’s made to provide you with continuous hot water anytime you need it. Because of the 9.5 GPM model, it can give hot water to up to three bathrooms at the same time. Furthermore, it has a wall-mount design, which allows you to conserve significant space.
no adjustments needed, installed and worked perfectly after turning it up to 120*. saved a ton of room!
|FUEL TYPE||Natural Gas|
|MEASUREMENTS||9.75" x 18.5" x 27.5"|
|FLOW RATE||9.5 gal (US)/min|
|WATTAGE / VOLT||120 volt|
This water heater from Rinnai, a well-known brand, is suitable for outdoor use, making it a versatile water heater worth considering. It’s a wall-mounted water heater that’s easy to install in a compact location because it doesn’t take up much room. There are two fuel types to pick from, so you can get the one you choose.
Provided very hot water efficiently. Straightforward installation.
|FUEL TYPE||Liquid Propane, Natural Gas|
|MEASUREMENTS||27'' H x 18.5'' W x 10.5'' D|
|FLOW RATE||7.5 gallons per minute|
|WATTAGE / VOLT||n/a|
The next item on the list is this portable water heater, which you can take with you wherever you go in case you need to shower with hot water. You can use it to instantly heat water while camping, hunting, in your Tiny Home, RVs, Poolside, Washing Pets, Equestrian, Cleaning Vehicles, Greenhouses, or anywhere else you need instant, dependable, limitless hot water.
I’ve had this over a year now. We use it for our camper and it’s great!!
|FUEL TYPE||Liquid Propane|
|MEASUREMENTS||16.5'' H x 11.5'' W x 5.5'' D|
|FLOW RATE||1.5 Gallons Per Minute|
|WATTAGE / VOLT||3 Volts|
You can easily control it with the automatic power technology and manual mode features. Not only that, but the included water flow regulator allows you to adjust the temperature as well. As you can look, it has an ergonomic size and a simple yet innovative design that allows you to install it anywhere you want.
Been using this for a few months. Had a pro install it. Have been in love with it ever since. Instant hot water and it lasts forever.
by Ryan R.
|MEASUREMENTS||17.3 x 11 x 3 inches|
|WATTAGE / VOLT||9 KW / 240 Volts|
Look, it has digital temperature control, so you can imagine how simple it is to set the desired temperature. This water heater is specially designed to save up to 50% on your electricity bill, and it should not be overlooked. This water heater is made of copper and stainless steel components, making it durable and easy to replace anywhere you want.
I purchased this to use in our new house bc I knew we would have well water and often wells don't work well with hot water tanks (previous experience). We have 4 kids and we also had two foster daughters. We ran the dishwasher, and all showered at least once a day. We also have a large dog (not that he used that much water, but still). This machine worked like a dream. Never ran out of hot water. Always on time. No funky smells from water eroding the copper pipe in the tank. I'll never buy a water heater w a tank again.
|MEASUREMENTS||3.63 x 17 x 17 inches|
|FLOW RATE||3 gallons per minute|
|WATTAGE / VOLT||27000 Watts / 240 Volts|
Stiebel Eltron’s compact design water heater is here to help you enjoy a shower with the cozy feel of warm water. As you can see, it has a digital temperature display for easy viewing and precise control. Because of the intelligent self-modulating technology, it uses the least amount of energy to heat the water, making it an energy-saving water heater worth considering. It’s about the size of a briefcase and doesn’t require any venting, so installing it is simple.
I have a three story townhouse with four bathrooms. My new water heater has been excellent at supplying all of my hot water needs.
|MEASUREMENTS||4.625" x 16.625" x 14.5"|
|FLOW RATE||5.62 gal (US)/min|
|WATTAGE / VOLT||28800 Watts / 240 Volts|
Another Stiebel Eltron, this time with a streamlined design that makes it simple to place anywhere you need it. As you can see, it has digital temperature control, allowing you to effortlessly adjust the temperature to your preferences. It even claimed to save you at least 15-20% on your electricity bills, so it’s worth looking into.
This water heater is the greatest! Not only does it give me much more room in the garage (where the old tank heater was) but it provides hot water for at least two showers and the dishwasher at the same time. I did pay to have it installed because I'm not a do-it-yourselfer but I'm already getting a return from a lower electric bill. Thanks Stiebel! Hot water on demand is the way to go!
|MEASUREMENTS||21.7 x 20.1 x 9.6 inches|
|WATTAGE / VOLT||18000 watts / 208 Volts|
This water heater, designed for winter use, will be a lifesaver in keeping your body warm by taking a shower with hot water. This water heater’s 42,000 BTUs provide the best performance for your RV’s plumbing. Furthermore, it is built with a quiet brushless motor, so you will not be disturbed by any noises.
I installed this heater about 4 months ago. Installation was easy enough, just a few extra trips for the right PEX fittings. I live in my trailer full time and use this heater everyday. Once you have an understanding of how the heater works as far as the required amount of flow for it to function, it operates flawlessly. Very happy with the purchase
|MEASUREMENTS||14.5 x 17.8 x 14.6 inches|
|WATTAGE / VOLT||n/a|
Furrion has created this tankless gas water heater with a heating capacity of 2.4GPM and a powerful 60,000BTU output, allowing it to reach hot temperatures in less than a minute even on the coldest of days. It has a pressure relief valve, over-temperature protection, blower block protection, and automatic shut-off to ensure your safety, so you can install it on your RV and use it with confidence.
|MEASUREMENTS||12.81 x 12.62 x 20.75”|
|FLOW RATE||0.32 GAL (1.2L)/min|
|WATTAGE / VOLT||n/a|
Well, now it’s your turn to choose the fittest one for your need. Don’t worry, all products listed on our list above are worth considering for their durability and efficiency to help you get the warm or hot water you desired. Good luck!