The Best Pool Heater - October 2021

Based on the analysis of 6,767 reviews.



Best Value
Immersion Water Heater Electric Submersible Water Heater with Stainless Steel Guard Cover and product image


SmartPool S220 Universal Heater 20 Feet product image


Kokido Ground Swimming K835CBX RV product image


Ecosmart US Smart POOL 27 product image


SmartPool WS220P SunHeater Solar Heating System product image


VEVOR Electric Pool Heater 11KW 220V Swimming Pool Electric Heater SPA Water Bath Heater Electric product image


Best Seller
Hayward W3H150FDN Universal H Series 150 000 BTU Pool and Spa Heater Natural Gas product image


OUTERDO Immersion Water Heater Electric Submersible Immersion Water Portable Heater with Stainless product image


Sun2Solar 16 Foot 32 Foot Rectangle Above Ground product image


CalPalmy Immersion Heater Submersible Water Heating with Stainless Steel Guard and Thermostat product image

Top Pool Heater Brands


Since 1958, Poolmaster has been a major producer of aftermarket swimming pool and spa products with an unwavering dedication to quality, service and dependability. Poolmaster provides six different product lines - Backyard and Hats, Inflatables, Floats, Maintenance, Swim and Dive and Toys and Games.

Along with Poolmaster, we offer brands like Stanley Pool Cleaning Tools, NBA Accredited Basketball Games and Floats,  Gecko Hawaii Floats, Aqua Fun Energetic Xtreme along with Lean-to-Swim items for your little ones.

Worth, variety and quality at each price point!

See all Poolmaster products

Ecosmart US

Classic tank heaters waste energy via heat that is lost, take up a lot of space, can rupture and rust and may frequently run out of hot water when you want it most. With a slick design and technology, EcoSmart's water heaters not just save cash revolutionize the industry, zero floor space is taken up by them, are lightweight and provide endless hot water that is instant. EcoSmart's patented self-modulating technology simply consumes the specific amount of energy  needed   to warm the the quantity of hot water needed, which may save  up to 50% on water hating costs a month!  

Smart Features

  • Infinite hot water
  • Saves up to 60 percent in water heating prices**
  • The Most Sophisticated, self-modulating tech
  • Lifetime guarantee*
  • compact layout, more storage space
  • Digital, temperature controller, 1-degree increments

Smart Applications

  • Cabinets, showers & baths
  • Washing machines & dishwashers
  • Warehouses & offices
  • Hospitals, hotels & restaurants
  • RV's & boats


**Based on a 10-minute bath at 105 degrees Fahrenheit employing an ECO-8 electrical water heater in contrast to the same shower and warmth with water coming from an 40-gallon tank. By eliminating heat loss, savings additionally include 18-22 percent. *Lifetime warranty valid for versions ECO 8 - ECO 36.   †Select models. © 2014 EcoSmart Green Energy Products, Inc.. All rights reserved.

See all Ecosmart US products