10 Best energy efficient pool heaters of 2026

Save up to 14% off

Best Choice

1

Clicked 21 times in the last month

Hayward
Hayward W3H400FDN Universal H-Series 400,000 BTU Natural Gas Pool and Spa Heater for In-Ground Pools and Spas
Main highlights

Premium Performance and Energy Savings
The Hayward Universal H-Series 400,000 BTU Natural Gas Heater offers fast, reliable heating, exceptional corrosion protection, and energy-efficient design for long-lasting comfort.

Ideal for In-ground Pools and Spas
Best suited for in-ground pools and spas up to 1,200 sq ft, especially where natural gas and low-NOx emissions are required.

Ease of Installation and Use
Customers frequently praise the heater's easy installation process and intuitive front control panel for simple operation and maintenance.
Key specs
- Max Pool Size:1,200 ft.
- Thermostat:Intuitive control panel
- Dimensions:39.6 x 32.8 x 30.6 inches
- Heating Power:400,000 BTU
- Safety Features:Corrosion protection
9.7

Exceptional

Our Rating

9.5
Simple to use

9.5
Thermal power

9.3
Efficient Energy Use
How do we rank?

Powerful technology We scan thousands of products and stores, analyzing reviews to find what matters most to users like you

Careful review Our team ensures quality, value, and fit based on real user feedback

Trusted insights AI and human analysis guide your decisions, reflecting real user priorities
Real users impact

Thousands of users trust our site daily

Based on millions of stores and reviews

Shoppers influence our rankings
Analyzing top stores
Value for Money

2

Hayward
Hayward W3H150FDP Universal H-Series 150,000 BTU Propane Pool and Spa Heater for In-Ground Pools and Spas
Main highlights

Premium Performance and Corrosion Protection
The Hayward Universal H-Series 150,000 BTU Propane Heater offers premium heating performance and exceptional protection against corrosion and unbalanced water chemistry.

Ideal for In-ground Pools and Spas
Best for in-ground pools and spas up to 400 ft² where natural gas is available and low-NOx emissions are required.

Easy Installation and Operation
Customers frequently praise the easy installation process and intuitive front control panel for straightforward operation and maintenance.
9.6

Exceptional

Our Rating

9.3
Simple to use

8.7
Temperature control

8.0
Easy installation
3

MICOE

MICOE 17000 BTU Energy Efficient Electric Pool Heater - for Above Ground Pools Up to 15ft (8/11/15ft) & 5,000 Gallons, Ultra Quiet 50dB, 110V/120V with Easy Install Kit
9.3

Excellent

Our Rating
4

VARMINPOOL

VARMINPOOL 27000 BTU Pool Heat Pump for 7000 Gals Above and Inground Swimming Pool, Smart WiFi Control Electric Pool Heater, Titanium Spiral Heat Exchanger, 120V, Energy Efficient

10% Off
9.1

Excellent

Our Rating
5

SINLJXDD
Upgrade Pool Heater-11KW 220V Thermostat Electric Swimming Pool Heater,Digital Touch Display Energy Efficient Pool Water Heater for Spa Relaxation, Bathtubs and Above Ground in-Ground Pools-11KW 220V

14% Off
Main highlights

Efficient Heating and Digital Display
The 11KW pool heater quickly raises water temperature with an intuitive digital display for easy monitoring.

Ideal for Small Pools and Spas
Perfect for pools up to 1,000 gallons, extending swimming seasons efficiently.

Safety and Durability Praised
Customers appreciate the overheat protection and durable stainless steel design.
Key specs
- Max Pool Size:1,000 gallons
- Thermostat:Automatic circulation heating
- Dimensions:10 x 8 x 4 inches
- Heating Power:11KW
- Safety Features:Overheat protection
9.0

Excellent

Our Rating
See Today’s Deals & Prices
6

MICOE

MICOE 100000 BTU Energy Efficient Electric Pool Heat Pump for Above Ground Pools Up to 36ft & 26,000 Gallons, Electric Swimming Pool Heat Pump with Large Heating Capacity
8.8

Very Good

Our Rating
7

SINLJXDD

Pool Heater-15KW 220V thermostat Electric Swimming Pool Heater,Digital Touch Display Energy Efficient Pool Water Heater for Spa Relaxation, Bathtubs and Above Ground in-Ground Pools (220V 15KW)
8.6

Very Good

Our Rating
8

Pentair
Pentair EC462025 MasterTemp 125 125,000 BTU Compact Energy Efficient Swimming Pool and Spa Propane Gas Heater for Small Pools Up to 15,000 Gallons
Main highlights

Compact and Efficient Design
The Pentair EC-462025 heater offers a compact build with 82% efficiency, ideal for smaller pools up to 15,000 gallons.

Ideal for Cooler Climates
Perfect for extending swimming seasons in cooler areas, providing warm water even when outdoor temperatures drop.

Praised for Temperature Maintenance
Customers love its ability to maintain comfortable pool temperatures, enhancing swimming enjoyment in colder weather.
Key specs
- Max Pool Size:Up to 15,000 gallons
- Thermostat:Rotating digital display
- Dimensions:31.5 x 21 x 23 inches
- Heating Power:125,000 BTUs
- Safety Features:Auto shut-off, Low NOx
8.5

Good

Our Rating

9.3
Temperature control

8.7
Simple to use

8.2
safety
9

Mxmoonant

Mxmoonant SPA Heater, 18KW 220V Swimming Pool Heaters Hot Tub Water Thermostat with Touchscreeen for Above Ground Inground Pool, Spa, Bathtub
8.4

Good

Our Rating
10

VARMINPOOL

VARMINPOOL Electric Pool Heat Pump for 7000 Gallons In and Above Ground Swimming Pool, 27000 BTU Pool Heater, WiFi Remote Control & Schedule, Titanium Heat Exchanger, 120V, Energy Efficient
8.3

Good

Our Rating

10 Best energy efficient pool heaters of 2026

1

Hayward W3H400FDN Universal H-Series 400,000 BTU Natural Gas Pool and Spa Heater for In-Ground Pools and Spas

9.5

9.5

9.3

How do we rank?

How do we rank?

Analyzing top stores

2

Hayward W3H150FDP Universal H-Series 150,000 BTU Propane Pool and Spa Heater for In-Ground Pools and Spas

9.3

8.7

8.0

3

MICOE 17000 BTU Energy Efficient Electric Pool Heater - for Above Ground Pools Up to 15ft (8/11/15ft) & 5,000 Gallons, Ultra Quiet 50dB, 110V/120V with Easy Install Kit

4

VARMINPOOL 27000 BTU Pool Heat Pump for 7000 Gals Above and Inground Swimming Pool, Smart WiFi Control Electric Pool Heater, Titanium Spiral Heat Exchanger, 120V, Energy Efficient

5

Upgrade Pool Heater-11KW 220V Thermostat Electric Swimming Pool Heater,Digital Touch Display Energy Efficient Pool Water Heater for Spa Relaxation, Bathtubs and Above Ground in-Ground Pools-11KW 220V

6

MICOE 100000 BTU Energy Efficient Electric Pool Heat Pump for Above Ground Pools Up to 36ft & 26,000 Gallons, Electric Swimming Pool Heat Pump with Large Heating Capacity

7

Pool Heater-15KW 220V thermostat Electric Swimming Pool Heater,Digital Touch Display Energy Efficient Pool Water Heater for Spa Relaxation, Bathtubs and Above Ground in-Ground Pools (220V 15KW)

8

Pentair EC462025 MasterTemp 125 125,000 BTU Compact Energy Efficient Swimming Pool and Spa Propane Gas Heater for Small Pools Up to 15,000 Gallons

9.3

8.7

8.2

9

Mxmoonant SPA Heater, 18KW 220V Swimming Pool Heaters Hot Tub Water Thermostat with Touchscreeen for Above Ground Inground Pool, Spa, Bathtub

10

VARMINPOOL Electric Pool Heat Pump for 7000 Gallons In and Above Ground Swimming Pool, 27000 BTU Pool Heater, WiFi Remote Control & Schedule, Titanium Heat Exchanger, 120V, Energy Efficient

Sign up and get exclusive special deals