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10 Best 40 Gallon Hot Water Heaters

Last Updated November 2019
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1
Best of the Best!
HOT WATER HEATER JACKET DIY 'PREMIUM' KIT: ENERGY SAVING REFLECTIVE FOIL FITS 50
REFLECTIVE FOIL
HOT WATER HEATER JACKET DIY 'PREMIUM' KIT: ENERGY SAVING REFLECTIVE FOIL FITS 50
9.9
Superb!
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Product Highlights
  • Average consumer payback is 6-12 months. improves the energy efficiency of your home.
  • Diy complete kit comes with: foil body (72" height x 76" circumference),foil spacers, foil tape. step-by-step instructions. lightweight,clean,easy to install. suitable for both electric & gas hot water heater tanks. also available in our 40 gallon diy kit.
  • Patented reflective foil stops 97% of radiant heat loss.original manufacturer of this kit for 27 years.
  • Complete kit is 'fire rated' class 1/class a: no 'foam' spacers (fire hazard),no fiberglass, non-toxic,no carcinogenics,no fibers, 'class 1/class a' fire rating
  • Exclusively sold by jr global sales 'only'. any other sellers advertising this same product here are sending another 'totally' different product that may not be 'tested' or 'fire rated' for safety. please be aware.
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HOT WATER HEATER JACKET DIY 'PREMIUM' KIT: ENERGY Review and Comparison
$31.88
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HOT WATER HEATER JACKET DIY 'PREMIUM' KIT: ENERGY Review and Comparison
$49.35
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2
American Water Heater Company Gas Enhancement Kit 4040T NG
American Water Heater
American Water Heater Company Gas Enhancement Kit 4040T NG
9.3
Superb!
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  • For 40 gallon 40,000 btu tall natural gas models
  • Whirlpool fg model enhancement door kit
  • Model# 6911120
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3
Best Value
HOT WATER HEATER JACKET DIY 'PREMIUM' KIT :ENERGY SAVING REFLECTIVE FOIL FITS 40
REFLECTIVE FOIL
HOT WATER HEATER JACKET DIY 'PREMIUM' KIT :ENERGY SAVING REFLECTIVE FOIL FITS 40
9.2
Superb!
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Product Highlights
  • Average consumer payback is 6-12 months. improves the energy efficiency of your home.
  • Do-it-yourself complete kit comes with: foil body(48" height x 76" circumference),foil spacers, foil tape. easy to follow instructions.comes complete with all material and step-by-step instructions. tools required,tape measure,utility knife/scissors and straight edge.lightweight,clean,easy to install.also available in our 50-60 gallon diy kit.
  • Patented reflective foil stops 97% of radiant heat loss and helps maintain standby water temperature.original manufacturer of this kit for 27 years.
  • Complete kit is 'fire rated'. no 'foam' spacers (fire hazard),no fiberglass. non-toxic,no carcinogenics,no fibers,'class 1/class a' fire rating.suitable for both gas and electric hot water tanks.
  • Exclusively sold by jr global sales 'only'. original manufactures of this kit for 27 years. any other sellers advertising this same product here are sending another 'totally' different product that may not be 'tested' or 'fire rated' for safety. please be aware.
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4
Corro Protec 40-80 gal Powered Titanium Water Heater Anode Rod
Corro-Protec
Corro Protec 40-80 gal Powered Titanium Water Heater Anode Rod
8.8
Great
Corro Protec 40-80 gal Powered Titanium Water Heater Review and Comparison
$119.99 New
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Corro Protec 40-80 gal Powered Titanium Water Heater Review and Comparison
$116.00 Used
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Corro Protec 40-80 gal Powered Titanium Water Heater Review and Comparison
$119.99
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Corro Protec 40-80 gal Powered Titanium Water Heater Review and Comparison
$114.99
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Product Highlights
  • Permanent corrosion protection – designed to replace your 40-80-gallon water heater’s hex head anode rod, it can help defend against any level of water hardness.
  • Quick and easy installation – we’ve included an easy-to-follow paper and step-by-step online pdf instructions to make installing your anode rod much easier.
  • Say goodbye to odors – eliminate your water heat odor problem by removing the rotten egg smell caused by hydrogen sulfide with our advanced powered anode rod.
  • Energy efficient design – by reducing mineral accumulation on the tank it can help improve the water quality while reducing stress on the tank to reduce energy costs.
  • North american quality – manufactured right here in north america, our hot water heater anode rod not only extends the life of your tank but is backed by a 20-year warranty.
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Corro Protec 40-80 gal Powered Titanium Water Heater Review and Comparison
$119.99 New
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Corro Protec 40-80 gal Powered Titanium Water Heater Review and Comparison
$116.00 Used
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Corro Protec 40-80 gal Powered Titanium Water Heater Review and Comparison
$119.99
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Corro Protec 40-80 gal Powered Titanium Water Heater Review and Comparison
$114.99
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7.9 Reviews
How we Score
9.5 features quality
8.9 popularity
8.4 brand reputation
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5
VEVOR 18L Natural Gas Hot Water Heater 4.8GPM 36KW Tankless Instant Boiler Stainless
VEVOR
VEVOR 18L Natural Gas Hot Water Heater 4.8GPM 36KW Tankless Instant Boiler Stainless
8.6
Great
VEVOR 18L Natural Gas Hot Water Heater 4.8GPM Review and Comparison
$125.99 New
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VEVOR 18L Natural Gas Hot Water Heater 4.8GPM Review and Comparison
$74.00 Used
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BRG Scoring Index
Our Scoring considers products features, online popularity, consumers reviews, brand reputation, prices and more
  • Easy to install
    7.5
  • Tech Support
    7.0
  • Temperature Control
    6.0
  • Value for money
    7.5
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6
Tengchang 18L/min 4.8 GPM Tankless Hot Water Heater Propane LPG Gas Instant
Tengchang
Tengchang 18L/min 4.8 GPM Tankless Hot Water Heater Propane LPG Gas Instant
8.4
Great
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Product Highlights
  • Automatic ignition system, flame failure protection device, water & gas combination unit ,fitted with over heating and pressure safeguard, suitable for both summer and winter.
  • Gas pressure: 2800pa, gas pipe: g 1/2", water inlet: g1/2'', water outlet: g1/2''. npt 1/2" female to g 1/2" male, vent type:4.3" flue duct.
  • Gas type: lpg liquid petroleum gas (propane), capacity: 18l/min (4.8gal), 25 degrees warm water producing rate.
  • Working temperature:-8-45℃, thermal input: 36kw, thermal efficiency: ≥80.8%. temperature rise: 25℃.
  • Certification: iso 9001:2000, 3 years warranty for parts.
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7
Eccotemp FVI-12-NG High Capacity Gas Tankless Water Heater
Eccotemp
Eccotemp FVI-12-NG High Capacity Gas Tankless Water Heater
8.0
Great
Eccotemp FVI-12-NG High Capacity Gas Tankless Water Heater Review and Comparison
$279.00 New
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Eccotemp FVI-12-NG High Capacity Gas Tankless Water Heater Review and Comparison
$181.00 Used
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Eccotemp FVI-12-NG High Capacity Gas Tankless Water Heater Review and Comparison
$294.99
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Product Highlights
  • For indoor installation with safe, efficient power ventilation and perfect for any small home, cabin or apartment.
  • Safe electronic ignition system; plugs into standard 120v electrical outlet with ul-listed cord.
  • 1.07 a
  • Whole home indoor, gas powered tankless water heater, rated at 3.6 gpm that activates only when in use, making it an energy saver.
  • Easy to read digital temperature display, on a compact and space-saving design with minimal noise output.
  • Uses standard 1/2" npt water fittings and is equipped with easy to use manual water temperature controls.
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Eccotemp FVI-12-NG High Capacity Gas Tankless Water Heater Review and Comparison
$279.00 New
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Eccotemp FVI-12-NG High Capacity Gas Tankless Water Heater Review and Comparison
$181.00 Used
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Eccotemp FVI-12-NG High Capacity Gas Tankless Water Heater Review and Comparison
$294.99
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8
Marey Power Gas 10L 3.1GPM Natural Gas Tankless Water Heater
Marey
Marey Power Gas 10L 3.1GPM Natural Gas Tankless Water Heater
7.8
Very Good
Marey Power Gas 10L 3.1GPM Natural Gas Tankless Review and Comparison
$181.29 New
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Marey Power Gas 10L 3.1GPM Natural Gas Tankless Review and Comparison
$69.00 Used
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Marey Power Gas 10L 3.1GPM Natural Gas Tankless Review and Comparison
$131.99
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Marey Power Gas 10L 3.1GPM Natural Gas Tankless Review and Comparison
$157.58
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Product Highlights
  • Works easily with low levels of water pressure. only uses gas while water is flowing
  • Unlimited hot water whenever is needed
  • Allows water temperature to be controlled
  • Can last a lifetime, keeping 87% efficiency level
  • Compact design saves space and is easy to install almost anywhere
  • Provide endless hot water on demand and only as needed
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Marey Power Gas 10L 3.1GPM Natural Gas Tankless Review and Comparison
$181.29 New
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Marey Power Gas 10L 3.1GPM Natural Gas Tankless Review and Comparison
$69.00 Used
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Marey Power Gas 10L 3.1GPM Natural Gas Tankless Review and Comparison
$131.99
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Marey Power Gas 10L 3.1GPM Natural Gas Tankless Review and Comparison
$157.58
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9
40 gal. Residential Gas Water Heater, NG, 38000 BtuH
Rheem
40 gal. Residential Gas Water Heater, NG, 38000 BtuH
7.4
Very Good
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Product Highlights
  • Country of manufacture: multiple
  • Mpn: prog40-38n rh62
  • Manufacturer: rheem
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10
Rheem RTEX-18 240V 2 Heating Chambers Residential Tankless Water Heater
Rheem
Rheem RTEX-18 240V 2 Heating Chambers Residential Tankless Water Heater
7.2
Very Good
Rheem RTEX-18 240V 2 Heating Chambers Residential Tankless Review and Comparison
$424.99 New
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Rheem RTEX-18 240V 2 Heating Chambers Residential Tankless Review and Comparison
$296.00 Used
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Rheem RTEX-18 240V 2 Heating Chambers Residential Tankless Review and Comparison
$425.00
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Rheem RTEX-18 240V 2 Heating Chambers Residential Tankless Review and Comparison
$505.27
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Rheem RTEX-18 240V 2 Heating Chambers Residential Tankless Review and Comparison
$425.00
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Rheem RTEX-18 240V 2 Heating Chambers Residential Tankless Review and Comparison
$425.00
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scoring
info & deals
BRG Scoring Index
Our Scoring considers products features, online popularity, consumers reviews, brand reputation, prices and more
  • Popularity & Sales
    7.0
  • Easy to install
    9.0
  • Energy efficiency
    8.0
  • Tech Support
    6.5
  • Temperature Control
    9.0
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