Top 10 High Efficiency Water Heaters
for December 2021

Recommendations are independently chosen by MOOZ’s editors. Purchases you make through our links may earn us a commission.

1
9.9
SCORE
Takagi T-H3S-DV-N Condensing High Efficiency Natural Gas Indoor Tankless Water Heater, 8-Gallon Per Minute

Takagi T-H3S-DV-N Condensing High Efficiency Natural Gas Indoor Tankless Water Heater

8-Gallon Per Minute

by Takagi
What We like

Computerized safety features, No pilot light to have to worry about

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Product Features

  • Dimension:22.5"H x 17.75"W x 10.75"D
  • Endless hot water, On-demand usage, Compact, Space saving, Energy conservation
  • Satisfies the 2012 SCAQMD Rule 1146.2 for Ultra-Low NOx Emissions

Endless hot water, on-demand usage, compact, space saving, energy conservation Satisfies the 2012 scaqmd rule 1146.2 for ultra-low nox emissions Dimension:22.5"h x 17.75"w x 10.75"d

2
9.7
SCORE
Takagi T-H3-DV-N Condensing High Efficiency Natural Gas Indoor Tankless Water Heater, 10-Gallon Per Minute, 199,000 BTU

Takagi T-H3-DV-N Condensing High Efficiency Natural Gas Indoor Tankless Water Heater

10-Gallon Per Minute, 199, 000 BTU

by Takagi
What We like

Primary heat exchanger utilizes commercial-grade copper alloy for 25 times better heat transfer than stainless steel, Integrated controls and power cord as standard features

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Product Features

  • Safety features include freeze, overheat, surge protection, and troubleshooting diagnostic codes
  • Satisfies the 2012 SCAQMD Rule 1146.2 for Ultra-Low NOx Emissions
  • Computerized safety features, No pilot light to have to worry about
  • Endless hot water, On-demand usage, Compact, Space saving, Energy conservation

Computerized safety features, no pilot light to have to worry about Safety features include freeze, overheat, surge protection, and troubleshooting diagnostic codes Endless hot water, on-demand usage, compact, space saving, energy conservation Satisfies the 2012 scaqmd rule 1146.2 for ultra-low nox emissions

3
9.5
SCORE
Camplux Pro Residential Tankless Water Heater Natural Gas,5.28 GPM High Efficiency Instant Natural Gas Water Heater,Constant Hot Water Heater for 3-4 Persons Whole Home,Outdoor Installation,White

CAMPLUX ENJOY OUTDOOR LIFE Camplux Pro Residential Tankless Water Heater Natural Gas

5.28 GPM High Efficiency Instant Natural Gas Water Heater, Constant Hot Water Heater for 3-4 Persons Whole Home, Outdoor Installation, White

by Camplux
What We like

Constant & Sustainable Hot Water Solution -CSA certified balanced combustion design ,features with over-high wind pressure safety protection,Ipx4 water resistant protection, over-loaded electric protection,fan failure protection, equipped with PCB start up self-test &real-time intelligent monitoring, timely warning of potential gas fire and hydro power to ensure your family's safety.

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Product Features

  • Affordable & Efficient Savings -PCB frequency conversion intelligent control, temperature intelligent adjustment, environmental protection and durability, truly outstanding energy saving. Man-machine dialogue, heating without waiting. This residential constant model saves time, money and energy while producing safe, endless hot water for whole home at an affordable rate.
  • High Thermal Efficiency & High-Rise Wind Resistance-Phosphorus deoxidized copper heat exchanger with high temperature and corrosion resistance technology for full combustion and high thermal efficiency up to 92% . It can resist grade 8 wind speed and 240Pa high anti-wind pressure. Additionally, a wind pressure sensor is added to perceive the external wind force in real time and automatically adjust the fan, flame and maintain stable combustion.
  • On-Demand Tankless Water Heater-Camplux advanced 5.28 GPM high efficiency flow control natural gas tankless water heater delivers 5.28 gallons per minute of on-demand endless hot water to suit medium- and smaller-sized homes. Automatically activates on water pressure between 7.0-150 PSI.
  • Considerate Customer Service -Here at Camplux, customer service is everything! We offer 24 shift hours customer service make the customer experience easy and fast through our live chat, phone support & our online helpdesk. Have a question? Give us a call at (844) 538-7475.

Considerate customer service -here at Camplux, customer service is everything! we offer 24 shift hours customer service make the customer experience easy and fast through our live chat, phone support & our online helpdesk. have a question? give us a call at (844) 538-7475. Affordable & efficient savings -pcb frequency conversion intelligent control, temperature intelligent adjustment, environmental protection and durability, truly outstanding energy saving. man-machine dialogue, heating without waiting. this residential constant model saves time, money and energy while producing safe, endless hot water for whole home at an affordable rate. High thermal efficiency & high-rise wind resistance-phosphorus deoxidized copper heat exchanger with high temperature and corrosion resistance technology for full combustion and high thermal efficiency up to 92% . it can resist grade 8 wind speed and 240pa high anti-wind pressure. additionally, a wind pressure sensor is added to perceive the external wind force in real time and automatically adjust the fan, flame and maintain stable combustion. On-demand tankless water heater-Camplux advanced 5.28 gpm high efficiency flow control natural gas tankless water heater delivers 5.28 gallons per minute of on-demand endless hot water to suit medium- and smaller-sized homes. automatically activates on water pressure between 7.0-150 psi.

4
9.5
SCORE
A.O. Smith XCR-50 ProMax Plus High Efficiency Gas Water Heater, 50 gal

A. O. Smith A.O. Smith XCR-50 ProMax Plus High Efficiency Gas Water Heater

50 gal

by Trumbull Industries
What We like

Internal microprocessor provides enhanced operating parameters and tighter differentials for precise sensing and faster heating response

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Product Features

  • 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

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 Meets all current regulations set forth by the national appliance energy conservation act (naeca)

5
8.6
SCORE
Takagi T-H3S-DV-P Condensing High Efficiency Propane Indoor Tankless Water Heater, 8-Gallon Per Minute

Takagi T-H3S-DV-P Condensing High Efficiency Propane Indoor Tankless Water Heater

8-Gallon Per Minute

by Takagi
What We like

Computerized safety features, No pilot light to have to worry about

more infoarrow_drop_down

Product Features

  • Satisfies the 2012 SCAQMD Rule 1146.2 for Ultra-Low NOx Emissions
  • Endless hot water, On-demand usage, Compact, Space saving, Energy conservation

Endless hot water, on-demand usage, compact, space saving, energy conservation Satisfies the 2012 scaqmd rule 1146.2 for ultra-low nox emissions

6
8.5
SCORE
Takagi T-H3J-DV-N Condensing High Efficiency Natural Gas Indoor Tankless Water Heater, 6.6-Gallon Per Minute

Takagi T-H3J-DV-N Condensing High Efficiency Natural Gas Indoor Tankless Water Heater

6.6-Gallon Per Minute

by Takagi
What We like

Computerized safety features, No pilot light to have to worry about

more infoarrow_drop_down

Product Features

  • Satisfies the 2012 SCAQMD Rule 1146.2 for Ultra-Low NOx Emissions
  • Endless hot water, On-demand usage, Compact, Space saving, Energy conservation

Satisfies the 2012 scaqmd rule 1146.2 for ultra-low nox emissions Endless hot water, on-demand usage, compact, space saving, energy conservation

7
8.3
SCORE
Takagi T-H3J-OS-N Condensing High Efficiency Natural Gas Outdoor Tankless Water Heater, 6.6-Gallon Per Minute

Takagi T-H3J-OS-N Condensing High Efficiency Natural Gas Outdoor Tankless Water Heater

6.6-Gallon Per Minute

by Takagi
What We like

Computerized safety features, No pilot light to have to worry about

more infoarrow_drop_down

Product Features

  • Endless hot water, On-demand usage, Compact, Space saving, Energy conservation
  • Satisfies the 2012 SCAQMD Rule 1146.2 for Ultra-Low NOx Emissions

Endless hot water, on-demand usage, compact, space saving, energy conservation Satisfies the 2012 scaqmd rule 1146.2 for ultra-low nox emissions

8
8.3
SCORE
A.O. Smith GCR-40LP ProMax Plus High Efficiency Liquid Petroleum Gas Water Heater, 40 gal

A. O. Smith A.O. Smith GCR-40LP ProMax Plus High Efficiency Liquid Petroleum Gas Water Heater

40 gal

by Trumbull Industries
What We like

Internal microprocessor provides enhanced operating parameters and tighter differentials for precise sensing and faster heating response

more infoarrow_drop_down

Product Features

  • Meets all current regulations set forth by the National Appliance Energy Conservation Act (NAECA)
  • Self-powered electronic gas valve uses thermopile to generate power needed to operate the electronic gas control without requiring external power
  • Blue Diamond glass coating provides superior corrosion resistance to industry-standard glass lining
  • 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 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

9
8.3
SCORE
A.O. Smith GCR-50LP ProMax Plus High Efficiency Liquid Petroleum Gas Water Heater, 50 gal

A. O. Smith A.O. Smith GCR-50LP ProMax Plus High Efficiency Liquid Petroleum Gas Water Heater

50 gal

by Trumbull Industries
What We like

Internal microprocessor provides enhanced operating parameters and tighter differentials for precise sensing and faster heating response

more infoarrow_drop_down

Product Features

  • Self-powered electronic gas valve uses thermopile to generate power needed to operate the electronic gas control without requiring external power
  • Dynaclean diffuser dip tube helps reduce lime and sediment buildup, maximizes 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)
  • Blue Diamond glass coating provides superior corrosion resistance to industry-standard glass lining

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

10
7.1
SCORE
Takagi T-H3S-OS-N Condensing High Efficiency Natural Gas Outdoor Tankless Water Heater, 8-Gallon Per Minute

Takagi T-H3S-OS-N Condensing High Efficiency Natural Gas Outdoor Tankless Water Heater

8-Gallon Per Minute

by Takagi
What We like

Computerized safety features, No pilot light to have to worry about

more infoarrow_drop_down

Product Features

  • Satisfies the 2012 SCAQMD Rule 1146.2 for Ultra-Low NOx Emissions
  • Endless hot water, On-demand usage, Compact, Space saving, Energy conservation

Satisfies the 2012 scaqmd rule 1146.2 for ultra-low nox emissions Endless hot water, on-demand usage, compact, space saving, energy conservation

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