10 Best Pool Heaters Of 2026
Pool Heaters — Reviews, Recommendations & Updated Buying Guide September 2026
Intex - Pool Heater
Why We Love It
"""Intex 28685 Pool EcoFriendly Solar Heating Mat
Why We Love It
Electric Pool Heater
Why We Love It
Bestway Pool Heater 2800 W 42.6 x 26.6 x 18.7 cm
Why We Love It
SpaChoice 2-2706 Solar Pool Heater for Pools
Why We Love It
Immersion Water Heater Portable Electric Water Heater with
Why We Love It
Immersion Water Heater
Why We Love It
Intex Intex Electric Pool Heater Model (56684)
Why We Love It
Immersion Water Heater, 2500W Bucket Water Heater
Why We Love It
Electric Immersion Water Heater
Why We Love It
Quick Pick
10 Best Pool Heaters Of 2026
Quick Pick
Intex - Pool Heater - Diameter 25 x 45 cm - For Round Easy Set and Plastic Frame Pool - Up to Diameter 457 cm
"""Intex 28685 Pool EcoFriendly Solar Heating Mat, Includes 32mm hose attachment points Suitable for above-ground pools with a capacity less than 30,280L"""
Electric Pool Heater
Bestway Pool Heater 2800 W 42.6 x 26.6 x 18.7 cm
SpaChoice 2-2706 Solar Pool Heater for Pools, 1-Quart
Immersion Water Heater Portable Electric Water Heater with Stainless Steel Guard 1500W Pool Immersion water Heater for Bathtub Bucket Inflatable Pool Heat 5 Gallon Water in Minutes (Yellow)
Immersion Water Heater - 2500W Bucket Fast Heater With Constant Temperature Display and Automatic Power Off - Submersible for Bathtubs, Pools, Buckets
Intex Intex Electric Pool Heater Model (56684)
Immersion Water Heater, 2500W Bucket Water Heater, Designed for Mini Inflatable Pools and Bathtubs, Stainless Steel Submersible Water Heater Heat Water Fast in Bathtub, for Bathtub, Garden
Electric Immersion Water Heater, 2500W Pool Heater With Stainless Steel, Floating Bucket Guard For Bathtub, Garden, Portable Inflatable
Buying Guide: Pool Heaters
📋 Table of Contents
1What size pool heater do I need for my pool?
Match the heater's BTU output to your pool volume and desired temperature rise — a rough guide is 50-100 BTU per gallon depending on climate and how quickly you want to heat. Check your pool's volume in gallons first, then look at heater specs to ensure it can handle heating in reasonable time.
2What's the difference between gas, electric, and solar pool heaters?
Gas heaters heat water fast and work year-round but cost more to run; electric heat pumps are efficient for gradual heating in warmer climates; solar heaters have low running costs but need roof space and clear skies. Choose based on your climate, budget, and how quickly you want results.
3Should I buy a heater with a higher BTU rating than I need?
A slightly higher BTU rating lets you heat faster and handle cooler weather better, but oversizing wastes fuel and money. Stay within 10-15% above your calculated need rather than doubling down.
4What features matter most when comparing pool heaters?
Look for energy efficiency rating, thermostat precision, build quality (titanium exchangers last longer), and whether it has freeze protection if you're in a cooler area. Also check if it's compatible with your existing pool plumbing and automation systems.
5Is it worth spending more on a premium branded pool heater?
Yes, if you plan to keep the heater 5+ years — better brands have superior heat exchangers, reliability, and warranty support that save on repairs. Budget options work fine for occasional use, but premium models handle daily heating more efficiently.
How we choose
Our editors are people who genuinely love testing and writing about products. We compare each product's real-world usability and strengths, then distill what matters most into our own "Why We Love It" points — so you get an honest, at-a-glance sense of what counts before you buy.