The 11 best energy-efficient pool heaters of 2025

Extend Your Swim Season: The pool heat pump features a dual-mode heating and cooling system that maintains optimal water temperatures year-round. Precision control ensures heating from 47–104℉ and cooling from 47–83℉, allowing you to enjoy extended swimming sessions through autumn’s crisp chill and spring’s cool mornings.

Rapid Heating & APP Control: Engineered for speed and efficiency, it delivers 75,000 BTU warmth in hours, perfect for large pools, up to 21,000-gallon systems, or chilly climates. Take full control via the app & control panel. Adjust temperatures remotely, track energy use, and program heating schedules to fit your lifestyle.

Inverter Energy Saving: Intelligent heat pump system featuring full DC variable frequency technology delivers 15.8 COP for maximum heating output. Adaptive frequency conversion algorithm dynamically adjusts power in real-time, achieving 70% energy savings over traditional electric heating and 40% higher efficiency than gas systems.

Ultra-Quiet & Auto-Defrost: Variable frequency technology reduces operational noise to just 53 dB, paired with an intelligent defrosting system featuring automatically initiated cycles every 40 minutes that complete the process in just 5 minutes, ensuring uninterrupted winter operation with continuous heating performance.

Easy to Assemble: Our heat pump features 3 versatile connection options designed to integrate with all pools,(1.25" & 1.5" hose adapter, 1.5" adapter conversion kit, 1.5" PVC pipe converter), ensuring hassle-free installation and optimal performance. Enjoy peace of mind with our 3-year warranty. Dive into comfort and reliability.

Extend Swim Season: This pool heat pump is designed for 8000 gallons or 18 ft in diameter above and inground pool, keeping the pool cozy and inviting. This heat pump allows you enjoy a longer swim season as it efficiently keeps your pool comfortable

Energy-Saving Technology: Our smart inverter technology allows the pool heater to automatically adjust its power from 0 to 100%, depending on the demand. This efficient system helps significantly reduce energy consumption and lower operating costs

Convenient Remote Access: Featuring WiFi control, our electric pool heater can be managed remotely with just one tap on your phone via our APP. Set the ideal temperature and operation schedule, and enjoy your pool without the need for constant manual checks

Built to Last, Performs Stable: Our pool heat pump’s titanium spiral heat exchanger is built to handle various water conditions, including saltwater. Its corrosion resist design, ensures stable performance and excellent heating efficiency

Enhanced Protection: The galvanized steel housing and evaporator protection shield ensure our heat pump withstands harsh weather conditions, protecting the evaporator fins from damage. This ensures consistent, optimized performance year-round

Quick and Simple Setup: Install our pool heater pump in under 30 minutes with no professional help needed. Just follow the instruction guide, once set up and ready, plug in and start using it without any voltage conversion

Enhanced Safety: The heat pump comes with a leakage protection plug for safe operation. Built-in flow-switch and temperature sensors allow it to work under ideal conditions, ensuring a worry-free pool experience without additional monitoring

Specification: Heat capacity: 30,000 BTU. Heating efficiency: C.O.P 6.0. Voltage: 110-120 V / 60 Hz. Size Parameter: L: 35.31'' W: 13.88'' H: 21.98''. Weight: 90.4 lb

Important Note: For a full understanding of the heat pump’s features and functions, please refer instruction guide provided for detailed reference

High-performance, affordable heater with premium features

82% energy efficiency is highest in class

1-1/2 in. Plumbing connection -- ideal for smaller bodies of water, including aboveground pools, spas and inground pools up to 15,000 gallons

Pre-mixed combustion technology for ultra-fast heat up

Easy-to-use digital display/controller

CLEAN AND GREEN: The FH270 is powered by clean electricity, reducing the harmful environmental effects and cost of traditional heaters that use natural gas or propane. Our pumps instead move heat from the air into the water, which saves you money and is a breeze to maintain

COMPATIBLE WITH: In ground pools up to 15,000 gallons and above ground pools up to 27 foot round or 18 by 33 foot oval. As with all heat pumps, we recommend using in a humid climate down to 50 degrees for best performance. Dry climates are better served by a traditional gas heater

HIGH EFFICIENCY: Utilizing high-pressure differential compressors and titanium heat exchangers, FibroPool heat pumps are meticulously designed to be the most energy efficient in their class. You can rest comfortably knowing your family will enjoy years of late season swimming without feeling a squeeze on your electric bill

RUGGED DESIGN: Enamel-coated steel chassis is designed to withstand outdoor elements season after season. Slim profile measures just 13"x38"x27", offering a wide range of mounting options. Conveniently installs with included 1 1/2 inch compression fittings on a 240 volt circuit

EASY OPERATION: Digital control panel with an easy-to-read display offers convenient temperature setting and monitoring. Optional extension cable allows you to mount the control panel in a location that works best for you

[A better way to extend the swimming season]: A warm pool for your kids, pets and the whole family! What you need is an efficient, low operating cost heating system - an ECO POOLTECH pool heating pump for your pool that extends play for months! **Verified performance, no false claims **: As a responsible brand, ECO POOLTECH ensures all data is based on tested results, with no inflated claims.

[Save Money]: Base on heat pump technology, the EU50 heat pump absorbs energy from the air and transfers it into the water. So the operation only requires very limited electric input, hence its high efficiency and heat conversion rate can reach a score of COP 5.62. In other words, for every cent of electricity spent, 5.44 times heat is generated!

[Ideal for Above Ground Pools]: The Pool heat pump EU50 is designed for above ground pools with up to 5000 gallons of water (No bigger than 15ft round or 9x18ft rectangular). This unit can operate at outdoor temperatures of 40ºF to 105 ºF, under optimal operating conditions the pool can be heated up to 100ºF.

[Easy to Install]:The pool heater EU50 allowing fast and easy hookup without professional installation. Just hook up several quick connectors, then plug and play. No need tools, no need plumber.

[Built in flow sensor] The machine is equipped with a water flow sensor, which can automatically control the working time of the heater through the timing setting of the water pump.Pure titanium heat exchanger safe for salty water. Intelligent control system, easy to operate.

Swim Comfortably Longer: Heat pools up to 8000 gallons or 18 ft in diameter, keeping the water warm and inviting throughout the season.

Eco-Friendly Efficiency: Inverter technology adjusts power usage as needed, reducing energy consumption without compromising performance.

Smart WiFi Control: Use our app to control the heater remotely, adjust schedules, and set temperatures with ease.

Heavy-Duty Components: The titanium heat exchanger resists corrosion, even in saltwater, providing consistent heating.

Durable Weather Protection: The galvanized steel and evaporator shield guard against weather damage, keeping the pump efficient year-round.

Quick Installation Process: Install the heat pump in 30 minutes or less with no need for professional help or voltage conversion.

Safety You Can Trust: Leakage protection plug, flow-switch, and sensors ensure safe operation, providing you with a effortless pool heating solution.

Reliable in Any Weather: Engineered to perform consistently in harsh conditions, this heat pump protects critical components for long-term durability.

Detailed Specs: 30,000 BTU heat capacity, C.O.P efficiency: 6.0, Power: 110-120 V / 60 Hz. Product size: 35.31" × 13.88" × 21.98". Weight: 90.4 lbs.

TOUCH DIGITAL DISPLAY: This Is Not A Plug and Play Pool Heater Device. Before Use, You Need To Have an Electrician Install It According To The Circuit Instructions. No Additional Cables, Plugs, Or Circulation Pumps Are Included. Please Check If The Relevant Parameters Match and Purchase With Caution.Our Upgraded 11KW 220V (Pool Heater Runs) Thermostat Can Quickly Raise the Water Temperature, Intuitive Digital Display, Even On Cool Days You Can Enjoy a Warm and Comfortable Spa!

AUTOMATIC CIRCULATION HEATING: Above Ground Pool Heater The Pool Heater Will Cycle On and Off Based on A Preset Temperature. When the Water Temperature Reaches or Exceeds the Preset Level, the Pool Thermostat Automatically Turns off. On the Contrary, If the Temperature Falls Below the Preset Level, the Pool Thermostat Will Automatically Turn On Again.

PREMIUM QUALITY MATERIAL: This Hot Tub Water Heate Comes Thermostat is Made of High Quality 304 Stainless Steel Heating Tube Material, Durable, it is Resistant to Corrosion and UV Damage, Ensuring Stable Long-Term Performance.

ENVIRONMENTALLY FRIENDLY AND ENERGY EFFICIENT: The 11KW 220V 240V Electric Pool Water Heater Suitable thermostat can Be Used for Pools Up To About 1,000 Gallons. This 11KW Pool Heater Transfers Heat Efficiently, Which Saves Energy and Electricity Costs, Extends the Swimming Season, and Greatly Reduces Energy Costs.

SAFETY FEATURES:This Pool Heaters Multiple Safety Features, Including Overheat Protection and a Sturdy Leak-Proof Design, Ensure a Safe and Worry-Free Experience for You and Your Family. Since He is a High Powered Machine, We Will Come With English Installation and Instruction Manual, if You Feel Confused You Can Hire a Licensed Electrician to Solve the Installation for Your Home.

[A better way to extend the swimming season]: A warm pool for your kids, pets and the whole family! What you need is an efficient, low operating cost heating system - an ECO POOLTECH pool heating pump for your pool that extends play for months! **Verified performance, no false claims **: As a responsible brand, ECO POOLTECH ensures all data is based on tested results, with no inflated claims.

[Save Money]: Base on heat pump technology, the EU50 heat pump absorbs energy from the air and transfers it into the water. So the operation only requires very limited electric input, hence its high efficiency and heat conversion rate can reach a score of COP 5.6. In other words, for every cent of electricity spent, 5.6 times heat is generated!

[Ideal for Above Ground Pools]: The Pool heat pump EU50 is designed for above ground pools with up to 5000 gallons of water (No bigger than 15ft round or 9x18ft rectangular). This unit can operate at outdoor temperatures of 40ºF to 105 ºF, under optimal operating conditions the pool can be heated up to 100ºF.

[Easy to Install]:The pool heater EU50 allowing fast and easy hookup without professional installation. Just hook up several quick connectors, then plug and play. No need tools, no need plumber.

[Built in flow sensor] The machine is equipped with a water flow sensor, which can automatically control the working time of the heater through the timing setting of the water pump.Pure titanium heat exchanger safe for salty water. Intelligent control system, easy to operate.

CLEAN AND GREEN: The FH135 is powered by clean electricity, reducing the harmful environmental effects and cost of traditional heaters that use natural gas or propane. Our pumps instead move heat from the air into the water, which saves you money and is a breeze to maintain

COMPATIBLE WITH: In ground pools up to 7,500 gallons and above ground pools up to 18 foot round or 12 by 24 foot oval. As with all heat pumps, we recommend using in a humid climate down to 50 degrees for best performance. Dry climates are better served by a traditional gas heater

HIGH EFFICIENCY: Utilizing high-pressure differential compressors and titanium heat exchangers, FibroPool heat pumps are meticulously designed to be the most energy efficient in their class. You can rest comfortably knowing your family will enjoy years of late season swimming without feeling a squeeze on your electric bill

RUGGED DESIGN: Enamel-coated steel chassis is designed to withstand outdoor elements season after season. Slim profile measures just 16"x40"x24", offering a wide range of mounting options. Conveniently installs with included 1 1/2 inch compression fittings

EASY OPERATION: Digital control panel with an easy-to-read display offers convenient temperature setting and monitoring. Optional extension cable allows you to mount the control panel in a location that works best for you

Rapid Heating: With a heating capacity of 35830 BTU, this swimming pool pump quickly raises the water temperature, providing a warm, comfortable swimming experience in above-ground or in-ground pools ranging from 6605 to 13209 gallons.

Temperature Control: Offering both heating and cooling options, this pool heater easily maintains your desired temperature. Whether in hot summer or cold winter, enjoy ideal swimming conditions and improved comfort without temperature concerns.

Sustainable and Energy-Efficient: Powered by clean electricity, it releases no harmful substances and minimizes environmental impact. The heat pump efficiently transfers heat from the air to the water with an energy efficiency ratio of 6.19, significantly lowering electricity costs for a warm, cost-effective swimming experience.

Long-Lasting Durability: Featuring a high-performance compressor and titanium tube heat exchanger, this pool heat pump resists salt, chlorine, and corrosion, ensuring stable performance and longevity while minimizing maintenance and replacement needs.

Quiet Operation: Equipped with multiple noise-reducing technologies, this heat pump operates at a noise level of <68dB (at 1 meter), ensuring a quiet experience that won't disrupt your daily activities.

NEXT GEN TECHNOLOGY: Based on our best selling FH270, the FH285 heat pump has been upgraded with next generation, full inverter technology, allowing it to warm your pool from even lower temperatures while using even less electricity

CLEAN AND GREEN: The FH285-I is powered by clean electricity, reducing the harmful environmental effects and cost of traditional heaters that use natural gas or propane. Our pumps instead move heat from the air into the water, which saves you money and is a breeze to maintain

COMPATIBLE WITH: In ground pools up to 17,500 gallons and above ground pools up to 27 foot round or 18 by 33 foot oval. As with all heat pumps, we recommend using in a humid climate down to 55 degrees for best performance. Dry climates are better served by a traditional gas heater

RUGGED DESIGN: Weather resistant chassis is designed to withstand outdoor elements season after season. Compact profile measures just 26"x26"x31", offering a wide range of mounting options. Conveniently installs with included fittings

EASY OPERATION: Digital control panel with an easy-to-read display offers quick temperature setting and monitoring. Wi-Fi and app integration allow you to make adjustments from the convenience of your phone

HIGH EFFICIENCY: Utilizing high-pressure differential compressors and titanium heat exchangers, FibroPool heat pumps are meticulously designed to be the most energy efficient in their class. You can rest comfortably knowing your family will enjoy years of late season swimming without feeling a squeeze on your electric bill.