How to Choose Best 40 Gallon Water Heater Buyer’s Guide (2018 Update)

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Best 40 Gallon Water Heater
All options from our list of the best 40 gallon water heater can be found at marketplace. This is a good marketplace for online shopping because it lets you analyze users reviews and other details for any item from the catalog. It makes choosing a 40 gallon water heater much easier.

We have covered every important detail during the creation of this 40 gallon water heater buying guide. Our team took into account aspects as price, assembly quality, warranty, users score, weight, and many more 40 gallon water heater specifications. This top list of the best 40 gallon water heater is based entirely on the experience of our team members and real buyers from marketplace. Nevertheless, you should conduct your own research before making a purchase to make sure that the 40 gallon water heater will completely suit you.

Top 9 of 40 Gallon Water Heater of 2018

Rating Image Name and Features Details
5.0
Ecosmart Eco 11 Electric Tankless Water Heater 1. Ecosmart Eco 11 Electric Tankless Water Heater (Editor’s Choice)
Never run out of hot water with an ecosmart tankless water heater.
Read reviews
4.5
A.o. Smith Ens-40 Promax Short Electric Water Heater 2. A.o. Smith Ens-40 Promax Short Electric Water Heater
Dynaclean diffuser dip tube helps reduce lime and sediment buildup while maximizing hot water output.
Read reviews
4.3
Rheem Rtex-13 240v Heating Chamber Residential Tankless Water Heater 3. Rheem Rtex-13 240v Heating Chamber Residential Tankless Water Heater
Durable copper immersion two heating elements, field serviceable.
Read reviews
4.0
A.o. Smith Gcr-40 Promax Plus High Efficiency Gas Water Heater 4. A.o. Smith Gcr-40 Promax Plus High Efficiency Gas Water Heater
Self-powered electronic gas valve uses thermopile to generate power needed to operate the electronic gas control without requiring external power.
Read reviews
3.8
Reliance 6-40-eors100 40 Gallon Medium Electric Water Heater 5. Reliance 6-40-eors100 40 Gallon Medium Electric Water Heater
Pex dip tube, glass-lined tank with anode rod protects against corrosion.
Read reviews
3.5
A.o. Smith Gcrl-40 Promax Short Gas Water Heater 6. A.o. Smith Gcrl-40 Promax Short Gas Water Heater (Most Stylish)
Uses a thermopile to generate the power needed to operate the electronic gas control without requiring an external power source.
Read reviews
3.3
Tankless Gas Water Heater 7. Tankless Gas Water Heater
Power vented directly vertically (rooftop) or sideways (wall) via stainless steel cat iii flue 3.5″ diameter included (20″).
Read reviews
3.3
Flextrol Thermal Expansion Tanks 8. Flextrol Thermal Expansion Tanks (Best Transitional Design)
Prevent dangerous pressure build up & protect household appliances and fixtures.
Read reviews
3.0
A.o. Smith Guc-40 Promax Ultra-low Nox Gas Water Heater 9. A.o. Smith Guc-40 Promax Ultra-low Nox Gas Water Heater
Uses a thermopile to generate the power needed to operate the electronics.
Read reviews

 

 

 
№ 1. Ecosmart Eco 11 Electric Tankless Water Heater, 13kw At 240 Volts with Patented Self Modulating Technology
 

Design
5/5
 

Materials
5/5
 

Construction
5/5
 

Value
5/5
 
Overall Brand Model Dimensions Weight Details
5.0
EcoSmart ECO 11 6.5 x 13.5 x 10 inches 7.35 pounds
Check Price

Never run out of hot water with an ecosmart tankless water heater. Save up to 12 cubic feet of storage space. Digital temperature control in 1-degree increments gives users complete control of hot water. 11kw at 220 is equal to 13kw at 240 and activation flow is 0.3 gpm. The eco 11 requires a minimum 125 amp electrical panel for installation with 60 amp double pole breaker connected to set of 6 awg wire. Lifetime warranty or residential use. Save up to 60% on your water heating costs with the most advanced, self modulating technology available.

 

 
GOOD
11kw at 220 is equal
Never run out
The eco 11 requires a minimum 125 amp electrical panel
Lifetime warranty or residential use
BAD
You will not be able to find a single disadvantage.
 

 

 
 

Design
4/5
 

Materials
5/5
 

Construction
4/5
 

Value
5/5
 
Overall Brand Model Dimensions Weight Details
4.5
A. O. Smith ENS-40 22 x 22 x 50 inches 124 pounds
Check Price

Permaglas glass coating protects steel tank from corrosion and maximizes tank life. Coregard anode rode aluminum anode with stainless steel core protects tank against corrosion longer than ordinary steel anodes. Durable, tamper-resistant brass drain valve. Dynaclean diffuser dip tube helps reduce lime and sediment buildup while maximizing hot water output; made from long-lasting pex cross-linked polymer. Meets all current regulations set forth by the national appliance energy conservation act (naeca).

 

 
GOOD
Meets all current regulations set forth by
Permaglas glass coating protects steel tank from corrosion
Dynaclean diffuser dip tube helps reduce lime
Coregard anode rode aluminum anode
BAD
May be uncomfortable for tall people.
 

What is the average cost for a good 40 gallon water heater?

The price of a 40 gallon water heater should never be the determining factor. Even if you are able to afford the most expensive model, you might do not actually need it. 40 gallon water heaterin the average price range can cover all your needs and save you a few bucks at the same time.

 

 
 

Design
5/5
 

Materials
5/5
 

Construction
2/5
 

Value
5/5
 
Overall Brand Model Dimensions Weight Details
4.3
Rheem RTEX-13 4 x 9 x 13 inches 4 pounds
Check Price

External adjustable digital thermostatic control with led display (+/1 degree accuracy. Threaded for easy replacement, simple installation, digital temperature display. Simple installation 3 foot electric cable and 1/2 npt adapters included; side 1/2 inch compression water connections. External controls to adjust temperature in increments of 1 f. Water-saver shower head 1.5 gpm. Durable copper immersion two heating elements, field serviceable.

 

 
GOOD
Simple installation 3 foot electric cable
Durable copper immersion two heating elements
99.8% energy efficient
External adjustable digital thermostatic control
BAD
You will have to find a separate room to store it.
Has an outdated design.
 

What did you do to create the TOP list of 40 gallon water heater?

We compared over a hundred of 40 gallon water heaterfrom various manufacturers. To make our buying guide as honest as it is possible, we took into consideration all the important characteristics, such as price, weight, material, assembly quality, and many more. If you want to find the best 40 gallon water heater for the least amount of money, our TOP list will be very useful for you.

 

 
 

Design
3/5
 

Materials
5/5
 

Construction
4/5
 

Value
4/5
 
Overall Brand Model Dimensions Weight Details
4.0
A. O. Smith GCR-40 22 x 22 x 58.5 inches 165 pounds
Check Price

Internal microprocessor provides enhanced operating parameters and tighter differentials for precise sensing and faster heating response. Meets all current regulations set forth by the national appliance energy conservation act (naeca). Dynaclean diffuser dip tube helps reduce lime and sediment buildup, maximizes hot water output; made from long-lasting pex cross-linked polymer. Blue diamond glass coating provides superior corrosion resistance to industry-standard glass lining. Self-powered electronic gas valve uses thermopile to generate power needed to operate the electronic gas control without requiring external power.

 

 
GOOD
Internal microprocessor provides enhanced operating parameters
Self-powered electronic gas valve uses thermopile
Meets all current regulations set forth by
Dynaclean diffuser dip tube helps reduce lime
BAD
Warranty period is hilariously low.
 

 

 
 

Design
5/5
 

Materials
3/5
 

Construction
5/5
 

Value
2/5
 
Overall Brand Model Dimensions Weight Details
3.8
Reliance 6-40-EORS100 1 x 23.1 x 53.5 inches 109 pounds
Check Price

Environmentally-friendly non-cfc foam insulation, water connection size: 3/4. 6-year limited tank & parts warranty.1-year labor warranty, copper sheathed heating elements dual 4500 watt. Factory-installed temperature & pressure (t&p) relief valve, max wattage: 6.000, voltage: 240. Pex dip tube, glass-lined tank with anode rod protects against corrosion. Factory-installed pex polymer lined heat trap nipples, family size: 3.

 

 
GOOD
Factory-installed pex polymer lined heat trap nipples
Factory-installed temperature & pressure
6-year limited tank & parts warranty.1-year labor warranty
Environmentally-friendly non-cfc foam insulation
Pex dip tube
BAD
You can find much cheaper products with the same functionality.
 

 

 
 

Design
2/5
 

Materials
2/5
 

Construction
5/5
 

Value
5/5
 
Overall Brand Model Dimensions Weight Details
3.5
A. O. Smith GCRL-40 22 x 22 x 47.8 inches 162 pounds
Check Price

Push-button piezo igniter makes lighting pilot fast and easy with one-hand push-button spark ignition. Dynaclean diffuser dip tube helps reduce lime and sediment buildup, maximizes hot water output; made from long-lasting pex cross-linked polymer. Internal microprocessor provides enhanced operating parameters and tighter differentials for precise sensing and faster heating response. Electronic gas control incorporates an led status indicator that monitors system operation and service diagnostics. Uses a thermopile to generate the power needed to operate the electronic gas control without requiring an external power source.

 

 
GOOD
Push-button piezo igniter makes lighting pilot fast
Electronic gas control incorporates an led status indicator
Dynaclean diffuser dip tube helps reduce lime
Internal microprocessor provides enhanced operating parameters
Uses a thermopile
BAD
Warranty period is hilariously low.
 

 

 
№ 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
 

Materials
4/5
 

Construction
4/5
 

Value
2/5
 
Overall Brand Model Dimensions Weight Details
3.3
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″). Modulates heat output in response to the flow rate of water running through the unit. Certified for installation in manufactured (mobile) homes pure copper heat exchanger. Delivers 6.6 gpm of hot water with a 35 f instant temperature rise. Propane gas – up to 140.000 powerful btu’s of heating power.

 

 
GOOD
Delivers 6.6 gpm
Propane gas
Power vented directly vertically
Modulates heat output in response
BAD
It is rather costly.
 

 

 
№ 8. Flextrol Thermal Expansion Tanks, for Hot Water Heaters 2.1 Gallons, Carbon Steel Shell, Stainless Steel 3 4 Inch Mip Connection, Butyl Diaphragm, 150 Psi, 210 Degrees Fahrenheit, Almond Color
 

Design
2/5
 

Materials
4/5
 

Construction
3/5
 

Value
4/5
 
Overall Brand Model Dimensions Weight Details
3.3
Flextrol FTT5 13 x 9 x 9 inches 5.3 pounds
Check Price

Prevent dangerous pressure build up & protect household appliances and fixtures. Thermal expansion tanks are used to prevent plumbing system and/or water heater damage and unnecessary relief valve discharge caused by excessive pressure from thermal expansion. External baked epoxy-polyester coating provides a durable appliance finish; exclusive polypropylene liner eliminates internal corrosion. Mig welding eliminates interior rough spots and sharp edges; high grade steel construction; made in italy; all tanks are nsf61 certified. Protect safety valves from failing; save energy and water.

 

 
GOOD
Mig welding eliminates interior rough spots
Protect safety valves from failing
Thermal expansion tanks are used
BAD
Has an outdated design.
 

 

 
 

Design
2/5
 

Materials
5/5
 

Construction
3/5
 

Value
2/5
 
Overall Brand Model Dimensions Weight Details
3.0
A. O. Smith GUC-40 18 x 18 x 62 inches 140 pounds
Check Price

Equipped with a flame arrestor that provides smooth ignition and ensures that flammable vapors are safely combusted inside the sealed chamber. Uses a thermopile to generate the power needed to operate the electronics. Electronic gas control incorporates an led status indicator that monitors system operation and service diagnostics. Dynaclean ii diffuser dip tube helps reduce lime and sediment buildup, maximizes hot water output; made from long-lasting pex cross-linked polymer. Internal microprocessor provides enhanced operating parameters and tighter differentials for precise sensing and faster heating response.

 

 
GOOD
Dynaclean ii diffuser dip tube helps reduce lime
Uses a thermopile
Electronic gas control incorporates an led status indicator
Internal microprocessor provides enhanced operating parameters
BAD
Requires delicate care.
 

What are your reviews based on?

We compared hundreds of various 40 gallon water heater and chose TOP options with the best price/quality ratio. It was not easy, since manufacturers present new modes of 40 gallon water heaterevery year. We made an unbiased review and used only important factors, such as prices, materials, weights, and many other things.

What warranty should a 40 gallon water heater have?

You should buy 40 gallon water heaterfrom brands with customer-friendly warranty policy. Trustworthy 40 gallon water heater manufacturers offer two-year or even longer warranty period. You would not have any problems in case of any issues — simply take a broken product to the service center to get it replaced or fixed.

Do good 40 gallon water heaterrequire a lifetime warranty?

Companies that make 40 gallon water heateroffer all kinds of warranties for any taste. Usually, cheap models have only a 6-month warranty or do not have it at all. Average users recommend choosing a 40 gallon water heater with a two-year warranty, but we believe that the five-year warranty is much better and safer. At the same time, our team would not recommend you to buy models with a lifetime warranty since the vast majority of them is significantly overpriced.

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