10 Best Pool Heaters 2020

Gareth Otwell Reviewed by Gareth Otwell | Last Updated:

After analyzing products, scanning reviews, spending more than 36 hours of research and speaking with our test users, we think the CalPalmy 3000W Immersion Water Heater | Floating Stainless Steel Electric is the one of the Best Pool Heaters on the market.

# Image Name Brand Price
1
⭐Best Choice
CalPalmy 3000W Immersion Water Heater | Floating Stainless Steel Electric
CalPalmy 3000W Immersion Water Heater | Floating Stainless Steel Electric Heater Boiler Heats 5 Gallons of Water in Minutes | Great for Small Bath Tub, Inflatable Swimming Pool - U.S Version (2-Pack) Check price CalPalmy $$$$$ Check price
2
Best under $1000
EcoSmart SMART POOL 27 Electric Tankless Pool Heater
EcoSmart SMART POOL 27 Electric Tankless Pool Heater, 27kW, 240 Volt, 112.5 Amps with Self Modulating Technology Check price Ecosmart US $$$$$ Check price
3
👑Premium Pick
Hayward H400FDN Universal H-Series 400
Hayward H400FDN Universal H-Series 400,000 BTU Pool and Spa Heater, Natural Gas, Low Nox Check price Hayward $$$$$ Check price
4
Best under $150
American Standard 9075.120 Safe-T-Heater
American Standard 9075.120 Safe-T-Heater Check price American Standard $$$$$ Check price
5
💲Best value for the money
1500W Immersion Heater
1500W Immersion Heater, Gesail UL-Listed Bucket Water Heater with Heating Element, Submersible Heater with Thermostat and Auto Shutoff Protection, Perfect for Home Travel and Winter Job - Silver Check price Gesail $$$$$ Check price
6 SunHeater S120U Universal Solar Pool Heater 2 by 20-Feet SunHeater S120U Universal Solar Pool Heater 2 by 20-Feet Check price SunHeater $$$$$ Check price
7
Best under $100
XtremepowerUS Inground/Above Ground Swimming Pool Solar Panel Heating System 28"
XtremepowerUS Inground/Above Ground Swimming Pool Solar Panel Heating System 28" X 20' Check price XtremepowerUS $$$$$ Check price
8 Raypak 266 Raypak 266,000 BTU Digital Electronic Ignition Natural Gas Pool Heater Check price Raypak $$$$$ Check price
9 Happybuy 11KW 220V Electric Pool Heater Swimming Pool Electric Heater Happybuy 11KW 220V Electric Pool Heater Swimming Pool Electric Heater SPA Heater Electric Assistant Digital fit for Thermostat Check price Happybuy $$$$$ Check price
10 Goplus Solar Dome Swimming Pool Heater Above Ground Goplus Solar Dome Swimming Pool Heater Above Ground, Pool Solar Heater, Sun Heater Check price Goplus $$$$$ Check price

CalPalmy 3000W Immersion Water Heater | Floating Stainless Steel Electric – Best Overall Pool Heater

CalPalmy 3000W Immersion Water Heater | Floating Stainless Steel Electric
  • Twice the Power: Heat water faster with our 3000-watt water heater and within minutes the water (About 5 gallons) will be noticeably warmer. (Please do not plug two heaters on the same outlet)
  • The Special Safe Feature: The heater stays floating while working to ensure the heating element never touches the bottom of the pool or tub
  • Easy to Use: Fully submerge the UL-listed heater in a bucket, small tub or trough of water and plug into a grounded 120v plug. You can submerge the handle and cord. Feel the difference in a few minutes!
  • Widely Application: The immersion water heater can be used in water, especially fit for heating water in large size container like bucket, basin, bath tub, mini inflatable swimming pool, etc
  • For any Cold Weather Application: Heat your farm animals' water, your tiling water on the job site, car wash bucket, pail of bath water in a tiny home or camper, window washing water and more! WARNING: Remove the heater before touching the water and please do not continuously use for over 4 hours!

EcoSmart SMART POOL 27 Electric Tankless Pool Heater – Best under $1000

EcoSmart SMART POOL 27 Electric Tankless Pool Heater
  • Flow Activation
  • Eco smart Pool Heaters are compact and easy to install for a new or existing pool
  • Set your temperature digitally to increments of 1-Degree. Set it and forget it.
  • Compatible with Eco smart Remote Control
  • Can be used as an alternative to or booster to heat pump.

Hayward H400FDN Universal H-Series 400 – Premium Pick

Hayward H400FDN Universal H-Series 400
  • Standard Cupro nickel heat exchanger for superior value and reliability
  • Patented polymer header and bypass valve design for the ultimate in hydraulic efficiency and reliability
  • Hayward Universal design for easy and versatile professional installation
  • Environmentally responsible low NOx emissions to meet or exceed air quality emission standards in all Low NOx regions

American Standard 9075.120 Safe-T-Heater – Best under $150

American Standard 9075.120 Safe-T-Heater
  • Whirlpool accessory
  • Maintain constant water temperature
  • Allows for longer, more relaxing soak
  • All American Standard whirlpools are pre-plumbed at the factory making them ready to accept the heater
  • Quick and easy two-step installation

1500W Immersion Heater – Best Budget Pool Heater

1500W Immersion Heater
  • High Power: 1500W, 120V immersion water heater, heat 5 gallons of water in few minutes, depending on the volume of the water, the original water temperature and container. It will heat water continuously over 180 degrees F and towards boiling(It can't boil water).Please don't use extention cord
  • Thermostat Feature - The middle stainless steel tube contains a thermal overload safety switch, when water reaches a certain temperature(about 180-194 degrees F), it can automatically cycle on and off to maintain water temperature. It will not overheating and save power.
  • Guard - The stainless-steel guard on the electric bucket heater protects the heating element from directly contacting persons or animals. The holes on the guard help release heat into the water faster.
  • Simple Operation - Immerse in water at proper level. Plug into any grounded wall outlet. Check power indicator light in plug to make sure unit is on. Please don't use extension cord.
  • Safety and Widely Usage: UL-Listed, this bucket heater is safe for use in all pails, buckets and bathtubs, perfect for home, travel and winter time job.

SunHeater S120U Universal Solar Pool Heater 2 by 20-Feet

SunHeater S120U Universal Solar Pool Heater 2 by 20-Feet
  • Simple DIY installation; for in ground or above ground pools
  • Installs on roof, rack, ground or fence
  • Patented web design for maximum exposure to sun's rays
  • Uses existing pool pump
  • Raises pool water temperature 6-10 degrees F

XtremepowerUS Inground/Above Ground Swimming Pool Solar Panel Heating System 28" – Best under $100

XtremepowerUS Inground/Above Ground Swimming Pool Solar Panel Heating System 28"
  • XtremepowerUS Panels are built from extremely high-grade materials that are proven to last in all types of weather
  • Pools pump and filter system circulates pool water through the SOLAR PANELS when it is heated & then returned to your pool. Once installed, these panels are cost effective, produce no greenhouse gases, and need low to no maintenance. Extend your swimming this year at a low cost with the help from the sun!
  • System is designed to be used on above-ground or in-ground pools. Each kit is made of - 2' x 20'ft panels. Each panel is made of lightweight, flexible, durable black polypropylene. The panel tube construction creates a larger surface area which optimizes heat transfer from the sun to your pool
  • Quantity of these solar panels needed is dependent on the pool size and the location, which may estimate by some websites.
  • Diverter kit may be required for pumps 1.5hp and greater. Sold separately under item number B01FNE41HA

Raypak 266

Raypak 266
  • 266,000 BTU natural gas digital pool and spa heater
  • Microprocessor-controlled thermostat can be set precisely to your liking , set it and forget it
  • Cabinet and the internals are non-corrosive and rust resistant
  • Features PolyTuf powder coating, polymer headers, and an all copper-fin-tube heat exchanger
  • Also features a stainless steel tube sheet, 2 inch CPVC water connections, burner tray and fire tile

Happybuy 11KW 220V Electric Pool Heater Swimming Pool Electric Heater

Happybuy 11KW 220V Electric Pool Heater Swimming Pool Electric Heater
  • Pool Heater fit for Thermostat - Power: 11 KW; Volt: AC 220-240V; Current: 50A; Housing material: Aluminum-coated plate; Pipe Diameter: 2"; Net Weight: 16.5lbs; Package Size: 4.7"x22"x14.9"
  • The control system keeps on monitoring the running status of every parts of the heater, and quickly reacts and displays corresponding hint message for any incident, so as to avoid any damage or malfunction happens.
  • This Heater fit for Thermostat adopts constant temperature controller, temperature sensor replaces traditional magnetic flow switch, it improves greatly of trouble free in working time, adaptability of water environment and stability.
  • Manual reset temperature control switch - Once unexpected high temperature 60℃ occurs, the temperature switch cuts off the system.
  • Wide Use - The pool heaters are special used for small pool less than 5CBM, massage pool and hot spring to heat and keep warm; Meanwhile, can be a assistant for heat pump in heating.

Goplus Solar Dome Swimming Pool Heater Above Ground

Goplus Solar Dome Swimming Pool Heater Above Ground
  • ☀️ Heat your pool in the environmentally friendly way, No electricity or gas connections
  • ☀️ Extend your swimming season with warm water and heat your pool to a warm, comfortable temperature
  • ☀️ Space saving and aesthetically pleasing when compared to solar panels
  • ☀️ A protective cover is included to protect the dome when not in use
  • ☀️ Solar powered swimming pool heater, Connects to 1.5 inch hoses

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