Top 10 Best inground pool heater in 2026

Last Updated - 6/11/2026

🏆Best Choice

FIVECUBS

Pool Heater, Portable Water Heater 2000W - Immersion Heater with Digital Thermometer, Upgraded Magnesium Oxide Heating for Fast Heating, for Small Pools, Bathtubs, Buckets, Tanks

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•【PROFESSIONAL SAFETY & AUTO SHUT-OFF】 This immersion water heater is your ultimate safety partner. The intelligent system automatically powers off the 2000W heating element once water hits the perfect temp of 165°F (75°C), preventing scalding risks. The durable stainless steel build resists rust. Remember: Always fully submerge this bucket heater in water before plugging into a 110V outlet to avoid damage or fire hazard.
•【RAPID 2000W HEATING POWER】 Say goodbye to cold water! Our 2000W high-efficiency portable water heater rapidly takes the chill off, warming up 5 gallons in just minutes. It's the perfect pool heater for inflatable pools, small stock tanks, and buckets. The perforated guard maximizes heat dispersion for faster, more even heating. Pro Tip: For larger tubs, use multiple units on separate circuits to speed up the process.
•【ULTIMATE PORTABILITY FOR ANY SCENE】 Your go-to heating solution anywhere! This lightweight and compact immersion heater is ideal for camping, farms, garages, or bathrooms. Use it effortlessly as a hot tub heater for portable spas, a pool warmer for kiddie pools, or to heat water for chores and pets. Critical: Keep it 3+ feet away from gases or flammables during operation.
•【SMART LCD TEMPERATURE MONITORING】 Precision heating at a glance! The built-in digital thermometer displays real-time water temperature, so you never have to guess. A clear power indicator light lets you know it's working. Just immerse, plug in, and monitor—it’s that easy! Always ensure no people or pets are in the water while this pool heater is running.
•【COMPLETE KIT & WORRY-FREE WARRANTY】 Everything you need is in the box: the FIVECUBS immersion heater, LCD thermometer, and user manual. It makes a practical gift for anyone. Your satisfaction is 100% guaranteed. Our US-based support team is ready to assist you with any questions or needs.

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$29.99

$39.99

-25%

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AQUASTRONG

Aquastrong Inverter Swimming Pool Heat Pump, 55,000 BTU 16,000 Gallons Electric Pool Heater for Above Ground and Inground Pool, WiFi Capable Timer, Heating and Cooling Pool Heater 220V

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•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 55,000 BTU warmth in hours, perfect for large pools, up to 16,000-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 50 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.

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$1799.00

$2349.00

-23%

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Intex

Intex 28685E 47 Inch x 47 Inch Solar Pool Water Heater Mat for 8,000 Gallon Above Ground Swimming Pool with Hose Attachment and Adaptors, Black

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•Solar heater mat uses solar technology to increase the temperature of the pool water by approximately 5 to 9 degrees depending on the weather
•Features an 11-square-foot surface to absorb the sun's rays to heat up above-ground pools; Dimensions (L x W): 47.25 x 47.25 inches (flat)
•Simple and economical to use, compatible with filter pumps with up to 1/3 HP or a pump flow rate less than 2,000 GPH; Weight: 6.41 pounds
•Includes a 1.25-inch hose attachment point, a bypass valve, 1 adaptor A, and 1 adaptor B for a 1.50-inch hose connection
•Constructed of heavy-duty UV stabilized PVC; Suitable for above-ground pools up to 8000 gallons; Folds for compact winter storage

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$27.95

$31.03

-10%

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SunHeater

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

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•Soak Up The Sun - Heat your pool the natural way with this blue solar blanket! When placed on top of the pool with the bubbles facing down, it traps the warmth from the sun and transfers it to the water.
•Keep Refills To A Minimum - Using this above ground pool heater can help minimize evaporation by up to 95%. This translates to significant savings since you don't have to add more water as often.
•Cut Down Cleaning Time & Costs - Our pool solar cover also helps keep leaves, dirt, and debris at bay. Cut down time spent on skimming and fishing out impurities and save on cleaning products!
•Customize According To Your Needs - This 16x32 feet solar pool cover is suitable for rectangular in-ground and above-ground pools. It can also be trimmed to fit square, round, and kidney-shaped pools.
•Storage Made Convenient - Despite its large dimensions, this 12 mil pool solar heater can be easily folded down to a compact size. Simply store it away in your shed or on a shelf when it's not in use.

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$182.22

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Varpoolfaye

Varpoolfaye 40000 BTU Electric Pool Heater For Inground Pools 12000 Gallon Swimming Pool Heat Pump Above Ground Pool Heater Heating Cooling WiFi Control Schedule 220V

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•Powerful Performance: With a high-pressure compressor, pool heater heat pump max output of 40000 BTU, a COP of 6.2, ideal for above ground or inground pools up to 120000 gallons, 14/16/18/21/23/26/28 foot pool
•Year-Round Comfort: 220v pool heater with both heating (59°F-104°F) and cooling (45°F-86°F) modes, ensuring perfect water temperatures for every season
•Smart WiFi Control: Pool heater for above ground pool easily adjust temperature, schedule, and functions via WiFi using the app for seamless control of your pool
•Efficient and Quiet: Our pool heat pump operates by absorbing heat from the air and releasing it to the pool, with minimal electricity and works quietly at 53dB, ensures a peaceful swimming experience
•Durable and Easy Setup: Inground pool heater built with a titanium heat exchanger for freshwater or saltwater pools, it features 1.5 inch connectors and a 126 inch power cord for easy setup and use

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$1430.99

$1699.99

-16%

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Hayward

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

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•The Hayward Universal H-Series 250,000 BTU Natural Gas Heater delivers premium heating performance for years of reliable, long-lasting comfort
•A durable cupro nickel heat exchanger offers exceptional protection against corrosion and premature failure caused by unbalanced water chemistry
•Industry-leading hydraulic design reduces circulation pump run time to provide major energy savings
•Front-panel-only access and intuitive control pad provide easy operation, service and maintenance
•Low NOx emissions meet air quality standards in all low-NOx areas, ensuring low environmental impact

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$3499.00

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Solar Sun Rings

SSR1 Solar Sun Ring Swimming Pool Spa Heater 21K BTU Cover Heating SSR-1

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•Absorbs Sunlight: Solar Sun Ring is composed of two sheets of UV-resistant vinyl that convert solar energy into heat, adding free heat to your pool with only the power of the sun
•Retains Heat and Water Chemistry: This solar blanket cover retains heat at night and reduces evaporation of water and chemicals
•All Weather: Water anchors add stability and weight for storms and windy conditions
•Salt Water or Chlorine: Compatible with automatic pool cleaners and not affected by salt or chlorine systems
•Easy to Clean: Easy to clean and store; when not in the water, do not store in direct sunlight as the product can burn whatever items are below it; Color: Sunburst-blue; Dimensions (W x H): 60 x 2 inches

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$37.99

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Hayward

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

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•The Hayward Universal H-Series 150,000 BTU Propane Heater delivers premium heating performance for years of reliable, long-lasting comfort
•A durable cupro nickel heat exchanger offers exceptional protection against corrosion and premature failure caused by unbalanced water chemistry
•Industry-leading hydraulic design reduces circulation pump run time to provide major energy savings
•Front-panel-only access and intuitive control pad provide easy operation, service and maintenance
•Low NOx emissions meet air quality standards in all low-NOx areas, ensuring low environmental impact

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$2599.00

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MICOE

MICOE 35000 BTU Inverter Pool Heater for Above Ground Pool and Inground Pool up to 24ft (11/18/24ft) / 12000 Gallons, Electric Swimming Pool Heat Pump, APP-Scheduled Heating and Cooling，220-240V

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•Large Heating Capacity: 35000 BTU high-efficiency heating system designed specifically for 8-24ft (12000 gallon) above ground or inground pools.Corrosion-resistant titanium heat exchanger efficiently heats filtered saltwater
•Extend the Swimming Season : Designed for above ground pools, the micoe pool heater operates in 32°F to 109°F and heats water to 104°F under optimal conditions, extending your pool season through early spring and late fall
•Smart Control: Adjust temperature and schedule heating/cooling via control panel or app. For optimal pool temperature, start 12 hours in advance. Heating range: 46-104°F; Cooling range: 45-82°F. Features auto-defrost function
•Energy-Saving Professional: Utilizes advanced air-source pool heater technology that heats 50% faster than standard electric pool warmer while reducing energy costs by 40%
•Quiet Operation : Maintains peaceful family swim time with near-silent 52dB noise level，the pool heaters for inground pools ensure zero disturbance for you and your children even at night
•Rugged Corrosion-Proof Housing: The durable ABS and heavy-duty galvanized steel housing provides superior corrosion resistance and withstands harsh weather (rain, snow, UV) for extended lifespan.Professional installation is required
•Tips: In autumn or winter, cover the swimming pool with an insulation cover to avoid heat loss caused by temperature differences.

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$1299.00

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SpaChoice

SpaChoice 1-Quart Premium Liquid Pool Heater Solar Cover In a Bottle, Liquid Solar Blanket for Pool, Made in USA

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•4 ounces per 15,000 gallons of water every 2 weeks
•Solar cover in a bottle
•Helps prevent heat loss and minimizes evaporation
•Conserves water, energy and chemicals
•Extends pool season

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$22.97

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