How to Find and Buy Best Tankless Water Heater Whole House Buyer's Guide & Reviews

Home » Rough Plumbing »

Best Tankless Water Heater Whole House
Our team conducted a thorough research just to make sure that our list of the best tankless water heater whole house is completely trustworthy. We recommend you to use it while choosing the right tankless water heater whole house for your needs.

Our team did a great job making this list. We have looked through many details to pick the best tankless water heater whole house. Factors like the number of users reviews, product specification, and prices were taken into consideration. Email us if you think that the list can be improved, and we will certainly consider your suggestions.

List of 8 Best Tankless Water Heater Whole House of 2018

Rating Image Name and Features Details
4.8
Thermoflow Elex 24 Electric Tankless Water Heater 1. Thermoflow Elex 24 Electric Tankless Water Heater
Instantly hot water.
Read reviews
4.5
IHeat Tankless S-16 240V 66A 16KW Stainless Steel Enclosure 7.2 by 11 by 3 1 2CPT 36 AWG 8 Electric Water Heater 2. IHeat Tankless S-16 240V 66A 16KW Stainless Steel Enclosure 7.2 by 11 by 3 1 2CPT 36 AWG 8 Electric Water Heater
Heat tank less s series can also be used in highly sterile applications like commercial kitchens, hospitals, clinics, and even schools where cleanliness is of the highest importance.
Read reviews
4.3
Atmor AT-910-24TP ThermoPro 24 kW  240V 4.6 GPM Digital Thermostatic Tankless Electric Instant Water Heater 3. Atmor AT-910-24TP ThermoPro 24 kW 240V 4.6 GPM Digital Thermostatic Tankless Electric Instant Water Heater
Requires 3 x 40a single-phase dp breakers, 3 x 8 awg wires, 240v.
Read reviews
4.3
27kW 240V Electric Tankless Water Heater 4. 27kW 240V Electric Tankless Water Heater
3 x 40a single-phase dp breakers, 3 x 8 awg wires, 240v.
Read reviews
3.8
Aquah 27 Kw On-demand Electric Tankless Water Heater Whole House 5. Aquah 27 Kw On-demand Electric Tankless Water Heater Whole House (Best Versatility Features)
Multi-layer heating chamber with long life span.
Read reviews
3.5
Atmor AT-910-18TP Thermopro 18 Kw 240V 3.7 Gpm Digital Thermostatic Tankless Electric Instant Water Heater 6. Atmor AT-910-18TP Thermopro 18 Kw 240V 3.7 Gpm Digital Thermostatic Tankless Electric Instant Water Heater
Requires 3 x 30a single-phase dp breakers, 3 x 8 awg wires, 240v.
Read reviews
3.5
Tankless Gas Water Heater Excel Pro Propane Lpg Gas 6.6 Gpm Whole House 7. Tankless Gas Water Heater Excel Pro Propane Lpg Gas 6.6 Gpm Whole House (DIY Crafters’ Choice)
Power vented directly vertically (rooftop) or sideways (wall) via stainless steel cat iii flue 3.5″ diameter included (20″).
Read reviews
3.5
IHeat Tankless AHS27-D 240V 112.5A 27KW Stainless Steel Enclosure 3 4 MIP 16 by 17 by 3.5 Electric Water Heater 8. IHeat Tankless AHS27-D 240V 112.5A 27KW Stainless Steel Enclosure 3 4 MIP 16 by 17 by 3.5 Electric Water Heater
Heat pro-performer continuously monitors all real time data collected 60 times a second through a range of sensors.
Read reviews

 

 

 
№ 1. Thermoflow Elex 24 Electric Tankless Water Heater, 24kw At 240 Volts, Instant Hot Water Heater with Self-modulating Temperature Technology for Whole House
 

Design
4/5
 

Size
5/5
 

Durability
5/5
 

Quality
5/5
 
Overall Brand Model Dimensions Weight Details
4.8
Thermoflow 17 x 4 x 9 inches 11.24 pounds
Check Price

Environment friendly – no venting required. Compared to centralised gas or oil heating systems, decentralised hot water supply can lower co2 emission up to 35 %. Self-modulating temperature technology – with the most advanced, self modulating temperature technology of german, backlit lcd digital temperature selection in 1 degree increments gives users complete control of hot water. Temperature range from 32 f to 165 f. Endless hot water – instantly hot water. You can never run out of hot water, perfect for whole house. Lowering costs & saving energy- saves up to 50% in water heating costs with the thermoflow electric tankless water heater and use up to 85% less energy than conventional storage heaters.

Notice – please verify that this model is the right size for your hot water needs and electrical requirements before purchase & installation. Dimensions: 10h x 4.5w x 18.6d inches ; weight: 9.9lb; pipes fittings: 1/2 inch npt, nominal pressure: 90psi. Electrical requirements: 24 kw.240 volts. Required breakers: 60 amp double pole. ( breakers and wire are not included ).

 

 
Top Pros
Self-modulating temperature technology
Environment friendly
Endless hot water
Lowering costs & saving energy
Top Cons
There are literally no cons.
 

What should I do if I receive a wrong item instead of my tankless water heater whole house?

If you were unlucky enough to get a wrong or broken product, use electronic mail or international telephone to contact the customer support team. They will help you to return your money or get the right tankless water heater whole house.

 

 
 

Design
5/5
 

Size
5/5
 

Durability
3/5
 

Quality
5/5
 
Overall Brand Model Dimensions Weight Details
4.5
iHeat Tankless -P 3.5 x 7.7 x 11.5 inches 3.9 pounds
Check Price

Heat tank less s series can also be used in highly sterile applications like commercial kitchens, hospitals, clinics, and even schools where cleanliness is of the highest importance. Heat tank less s series saves valuable space with its compact size, the s series compared to tank type water heaters, is small enough to fit any under counters installations, or even closets. Heat tank less water heater saves you up to 60% on your water heating costs. The heat tank less stainless steel construction is a perfect fit for any applications near the ocean, like beach front properties, yachts, small boats, resorts and outdoor kitchens.

Dimensions: 11.5 x 9 x 4.5 inches.

 

 
Top Pros
Heat tank less s series saves valuable space
The heat tank less stainless steel construction is a perfect fit
Top Cons
You will need a big enough car to transport it.
 

How expensive should a good tankless water heater whole house be?

Obviously, a good tankless water heater whole house cannot be very cheap. If you want to buy a decent product, you should not be trying to save money on it. We recommend you to order the best models from our list of the best tankless water heater whole houseif you can afford it.

 

 
 

Design
4/5
 

Size
3/5
 

Durability
5/5
 

Quality
5/5
 
Overall Brand Model Dimensions Weight Details
4.3
Atmor AT-910-24TP 17.4 x 5.2 x 13.4 inches 19.05 pounds
Check Price

Digital temperature control allows you to set your temperature in increments of 1 . Specially equipped to heat incoming water as low as 37 f at 2.45 gpm. Save up to 50% on electric bills compared to a traditional tank water heater. Requires 3 x 40a single-phase dp breakers.3 x 8 awg wires.240v. Industries only unit to receive splash-proof ip54 certification, allowing point of use installation near showers and sinks.

 

 
Top Pros
Specially equipped
Requires 3 x 40a single-phase dp breakers.3 x 8 awg wires.240v
Digital temperature control allows you
Industries only unit
Top Cons
The product will not survive a fall.
 

 

 
№ 4. 27kW 240V Electric Tankless Water Heater, 5.1gpm 112.3 Amps, Thermopro Series with Digital Thermostatic Control
 

Design
4/5
 

Size
5/5
 

Durability
5/5
 

Quality
3/5
 
Overall Brand Model Dimensions Weight Details
4.3
Atmor AT-910-27TP 17.4 x 5.2 x 13.4 inches 18.9 pounds
Check Price

Digital temperature control allows you to set your temperature in increments of 1 degree. Thermostatic control range from 90-135 degrees. Specially equipped to heat incoming water as low as 37 degrees at 2.2 gpm. Save up to 50% on electric bills compared to a traditional tank water heater. Stainless steel interior is durable and corrosion resistant allowing for heat efficiency and longer life expectancy. Electrical requirements: 3 x 40a single-phase dp breakers.3 x 8 awg wires.240v.

 

 
Top Pros
Stainless steel interior is durable
Digital temperature control allows you
Specially equipped
Electrical requirements
Top Cons
May be expensive for some people.
 

Should I get a tankless water heater whole house with a lifetime warranty?

Every manufacturer offer various warranty terms. Some companies sell tankless water heater whole housewith a lifetime warranty, while the others only offer one-year or two-year protection. The cheapest models usually do not have any warranties at all. We think that five-year warranty is more than enough for the most tankless water heater whole house.

 

 
 

Design
2/5
 

Size
3/5
 

Durability
5/5
 

Quality
5/5
 
Overall Brand Model Dimensions Weight Details
3.8
AQUAH AQS-27 15 x 3.5 x 11 inches 20 pounds
Check Price

Multi-layer heating chamber with long life span; electric leakage protection; anti scaling mechanism, and over temperature/water pressure protection; stainless steel case and front cover for durability, splash proof, and corrosion resistance; . Led touch screen to show the heater’s working condition, output water temperature, running time and power/water consumption; water temperature displayed in either fahrenheit or celsius; fault auto-detection technique for the convenience of trouble shooting. Direct temperature setting, consistent output water temperature regulated by thermostat, and temperature settings automatically memorized to avoid repeated operations; .

Aquah aqs-27 electric tankless water heater; etl certified; patented technology, enclosed loop heating system with less heat loss, nano insulation material to completely separate water from electricity; .

 

 
Top Pros
Led touch screen
Direct temperature setting
Aquah aqs-27 electric tankless water heater
Multi-layer heating chamber
Top Cons
You will not be able to use it on the daily basis.
 

 

 
 

Design
4/5
 

Size
3/5
 

Durability
4/5
 

Quality
3/5
 
Overall Brand Model Dimensions Weight Details
3.5
Atmor AT-910-18TP 17.4 x 5.2 x 13.4 inches 19.15 pounds
Check Price

Digital temperature control allows you to set your temperature in increments of 1 . Specially equipped to heat incoming water as low as 37 f at 1.9 gpm. Industries only unit to receive splash-proof ip54 certification, allowing point of use installation near showers and sinks. Save up to 50% on electric bills compared to a traditional tank water heater. Requires 3 x 30a single-phase dp breakers.3 x 8 awg wires.240v.

 

 
Top Pros
Digital temperature control allows you
Requires 3 x 30a single-phase dp breakers.3 x 8 awg wires.240v
Specially equipped
Industries only unit
Maximum temperature
Top Cons
The product will not survive a fall.
Similar products are much cheaper.
 

 

 
№ 7. Tankless Gas Water Heater Excel Pro Propane Lpg Gas 6.6 Gpm Whole House and for Hydronic Heating Compare to Rinnai, Rheem, Noritz, Bosch Free Flue Kit
 

Design
3/5
 

Size
2/5
 

Durability
4/5
 

Quality
5/5
 
Overall Brand Model Dimensions Weight Details
3.5
gasFlex 14.5 x 5.5 x 23 inches 69 pounds
Check Price

Power vented directly vertically (rooftop) or sideways (wall) via stainless steel cat iii flue 3.5″ diameter included (20″). Certified for installation in manufactured (mobile) homes pure copper heat exchanger. Modulates heat output in response to the flow rate of water running through the unit. Propane gas – up to 140.000 powerful btu’s of heating power. Delivers 6.6 gpm of hot water with a 35 f instant temperature rise.

 

 
Top Pros
Modulates heat output in response
Delivers 6.6 gpm
Propane gas
Power vented directly vertically
Top Cons
Quickly becomes wet due to cheap materials.
 

 

 
 

Design
4/5
 

Size
4/5
 

Durability
4/5
 

Quality
2/5
 
Overall Brand Model Dimensions Weight Details
3.5
iHeat Tankless -P 3 x 17 x 16 inches 21.4 pounds
Check Price

His tank less water heater is so powerful it can effortlessly run 2 to 3 standard showers at 1 time in the southern states where the incoming water temperatures a warmer. Heat ahs27-d includes a touch screen display where you have the ability to use a range of functions from setting your desired temperature to even programming certain max temp settings. Heat pro-performer continuously monitors all real time data collected 60 times a second through a range of sensors. Heat software will allow you to run a full diagnostics of the unit without having to open the unit, only a memory stick, and a laptop or tablet to insert for complete diagnostic report.

Heat pro-performer boasts a 3/4 in. Inlet and outlet which makes it a breeze for high flow applications.

 

 
Top Pros
Heat software will allow you
Heat pro-performer boasts a 3/4 in
Top Cons
Its counterparts are less expensive.
 

Are there anything special that I should know before buying a tankless water heater whole house?

Thanks to the our site, you do not have to worry about anything. Choosing a tankless water heater whole house on this site is very simple! You can check photographs. read detailed description of any specific tankless water heater whole house and read various user reviews. Learn from the experience of other people!

Is there a way to get my money back for a tankless water heater whole house?

Most of the time seller will return your money without any trouble. If you received a malfunctioning tankless water heater whole house, you will easily get a refund or a replacement. Nonetheless, if you value your time, we highly recommend you to thoroughly check the item’s description before making a purchase.

Meet the Author
My name is Erik Neal and I am a House Cleaner. I graduated from University of North Dakota - Grand Forks, North Dakota

Contact me if you have any questions:
+1 212-683-8151
erik@supsekens.com
276 5th Ave Suite 704 New York, NY 10001
View on map
Follow on Youtube
Hello and welcome to Reviews, Tutorials & Tech. Please subscribe to my channel to get notifications of my latest videos and leave me comments. I'll do my best to answer your questions. Have a great day.

Review Lasko Digital Ceramic Heater with Remote Control Model CC24870

Review Sonos One smart speaker with Alexa

VLOG 0012 Orangetheory Fitness Entire 60 minute workout
Most Read
How to Choose the Best Combination Key Lock Box
How To Pick The Best Mattress Encasement
How to Choose Best Bell Tent
2018's Best Walking Measuring Wheel
Discover Best Alkaline Water Faucet Filter
Crucial Things You Need to Know about Best Futon For Sleepings
If you have goods for review, contact us: +1 212-683-8151 | erik@supsekens.com | 276 5th Ave Suite 704 New York, NY 10001.
COPYRIGHT © 2018 · SUPSEKENS.COM · ALL RIGHTS RESERVED