10 Best pool heater for inground pools of 2025

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Best Choice

1

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Hayward
Hayward W3HP21404T HeatPro 140,000 BTU Pool Heat Pump for In-Ground Pools
Main highlights

Economical Heating
Utilizes surrounding air for cost-effective heating, outperforming propane, gas, and electric heaters.

Ideal for Coastal Climates
Designed for in-ground pools, excels in maintaining consistent temperatures in coastal environments.

Quick Heating Performance
Customers praise the quick heating capability, even for large pools.
9.8

Exceptional

Our Rating

9.9
Temperature control

9.3
lasts a long time

8.9
Easy installation
How do we rank?

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. By purchasing the products we rank, you’ll get the lowest price we found while we may receive a commission at no cost to you, which will help us continue to provide you with value.
Value for Money

2

Raypak

Raypak 266,000 BTU Digital Electronic Ignition Natural Gas Pool Heater
9.7

Exceptional

Our Rating

8.4
Easy installation

8.4
Tech Support

8.2
Efficient Energy Use
3

Hayward
Hayward W3H250FDN Universal H-Series 250,000 BTU Natural Gas Pool and Spa Heater for In-Ground Pools and Spas

10% Off
Main highlights

Premium Performance and Reliability
The Hayward Universal H-Series 250,000 BTU Natural Gas Heater delivers fast and efficient heating with exceptional corrosion protection and energy savings.

Ideal for In-Ground Pools and Spas
Best suited for in-ground pools and spas up to 750 sq. ft. in areas requiring low-NOx emissions and where natural gas is available.

Ease of Installation and Use
Customers frequently praise the heater's easy installation process and intuitive front control panel for straightforward operation and maintenance.
9.5

Excellent

Our Rating

9.7
Temperature control

9.5
Simple to use

9.3
Efficient Energy Use
4

AQUASTRONG

Aquastrong 35,000 BTU Inverter Swimming Pool Heat Pump, 9,000 Gallons Electric Pool Heater for Above Ground and Inground Pool, WiFi Capable Timer, Heating and Cooling Pool Heater 120V
9.4

Excellent

Our Rating
5

Hayward
Hayward W3H135FDN H-Series Pool/Spa Heater, 135k BTU, Natural Gas Model
Main highlights

Durable Heat Exchanger
This pool heater features a durable cupro nickel heat exchanger, ensuring longevity and reliability even under harsh conditions.

Ideal for Large Pools
Perfect for pools up to 9000 gallons, providing efficient heating with faster speed-to-heat capability, making it suitable for large residential pools.

Highly Efficient Heating
Customers praise its ability to increase water temperature by approximately 1 degree per hour, highlighting its efficiency and performance.
9.3

Excellent

Our Rating

9.9
Easy installation

9.9
Temperature control

9.7
lasts a long time
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6

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.
9.2

Excellent

Our Rating

9.3
Temperature control

8.7
Simple to use

8.2
safety
7

Varpoolfaye

Varpoolfaye 35100 BTU Above Ground Pool Heater 10000 Gallon Swimming Pool Heater Pump Heating or Cooling Electric Pool Heater For Inground Pool WiFi Control Schedule 220V 60HZ
9.1

Excellent

Our Rating
8

SunHeater
SunHeater Pool Solar Blanket - Heavy Duty Rectangular Pool Solar Cover with Bubbles - Heat Transfer Solar Pool Heater for In-Ground Swimming Pools - Durable 12 Mil Thick Polyethylene - 16' x 32' Feet
Main highlights

Natural Pool Heating
The SunHeater Pool Solar Blanket uses solar energy to heat your pool, increasing water temperature effectively and naturally.

Ideal for Heat Retention
Perfect for maintaining pool heat overnight, keeping temperatures stable even when air temperature drops.

Customer Praised Quality
Customers love its effectiveness in raising pool temperature and keeping water clean from debris.
9.0

Excellent

Our Rating

8.7
lasts a long time

8.4
Easy installation

8.2
Simple to take off
9

Ecosmart US
EcoSmart SMART POOL 27 Electric Tankless Pool Heater, 27kW, 240 Volt, 112.5 Amps with Self Modulating Technology

27% Off
Main highlights

Compact Design and Easy Installation
EcoSmart SMART POOL 27 is compact and simple to install, ideal for new or existing pools.

Ideal for Pool Heating and Boosting
Perfect for heating pools or as a booster to existing heat pumps.

Efficient Self-Modulating Technology
Praised for maintaining consistent pool temperatures efficiently with self-modulating technology.
8.9

Very Good

Our Rating

9.3
Temperature control

8.0
lasts a long time

8.0
Easy installation
10

Pentair

Pentair EC-462024 -Natural Gas 125K Heater - Limited Warranty
8.8

Very Good

Our Rating

8.2
Easy installation

8.0
worth the money

8.0
Tech Support

10 Best pool heater for inground pools of 2025

1

Hayward W3HP21404T HeatPro 140,000 BTU Pool Heat Pump for In-Ground Pools

9.9

9.3

8.9

2

Raypak 266,000 BTU Digital Electronic Ignition Natural Gas Pool Heater

8.4

8.4

8.2

3

Hayward W3H250FDN Universal H-Series 250,000 BTU Natural Gas Pool and Spa Heater for In-Ground Pools and Spas

9.7

9.5

9.3

4

Aquastrong 35,000 BTU Inverter Swimming Pool Heat Pump, 9,000 Gallons Electric Pool Heater for Above Ground and Inground Pool, WiFi Capable Timer, Heating and Cooling Pool Heater 120V

5

Hayward W3H135FDN H-Series Pool/Spa Heater, 135k BTU, Natural Gas Model

9.9

9.9

9.7

6

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

7

Varpoolfaye 35100 BTU Above Ground Pool Heater 10000 Gallon Swimming Pool Heater Pump Heating or Cooling Electric Pool Heater For Inground Pool WiFi Control Schedule 220V 60HZ

8

SunHeater Pool Solar Blanket - Heavy Duty Rectangular Pool Solar Cover with Bubbles - Heat Transfer Solar Pool Heater for In-Ground Swimming Pools - Durable 12 Mil Thick Polyethylene - 16' x 32' Feet

8.7

8.4

8.2

9

EcoSmart SMART POOL 27 Electric Tankless Pool Heater, 27kW, 240 Volt, 112.5 Amps with Self Modulating Technology

9.3

8.0

8.0

10

Pentair EC-462024 -Natural Gas 125K Heater - Limited Warranty

8.2

8.0

8.0

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