Find the Best Pool Heater for Your Pool
We test, compare, and rank pool heaters — gas, heat pump, solar, and electric — for above-ground and in-ground pools, so you swim in warm water without wasting money on the wrong BTUs. No fluff, no brand bias.
Latest Reviews & Guides
Best Above-Ground Pool Heater 2026: Heat Pump, Gas & Solar
The best above-ground pool heaters of 2026, tested and compared. Heat pump, gas, and solar picks sized for 5,000–15,000 gallon pools — with real BTUs, pricing, and running costs.
Best PicksBest Pool Heater 2026: Gas, Heat Pump & Solar Picks Tested
We compared the top pool heaters of 2026 — gas, heat pump, and solar — for in-ground and above-ground pools. See our best-overall, best-value, and most-efficient picks with real BTUs, pricing, and running costs.
Best PicksBest Solar Pool Heater 2026: Panels & Domes Tested
The best solar pool heaters of 2026 for in-ground and above-ground pools. Panel, dome, and mat systems compared on heat gain, price, and install — with near-zero running cost.
Best PicksBest Pool Heat Pump 2026: High-COP Picks Tested & Compared
The best pool heat pumps of 2026, ranked by efficiency (COP), BTUs, and running cost. Hayward, Pentair, and FibroPool picks for in-ground and above-ground pools.
ComparisonsHayward vs Pentair Pool Heater (2026): Which Brand Wins?
Hayward vs Pentair pool heaters compared head to head — gas heaters and heat pumps. Efficiency, durability, noise, price, and which brand to buy for your pool.
Why Trust PoolHeaterLab?
Hands-On Research
Picks grounded in real heat-output, efficiency (COP), and build-quality research — not spec sheets.
Expert Picks
Every guide is matched to your pool size, climate, and fuel type, not marketing claims.
Every Budget
Options from budget solar mats to premium high-COP heat pumps — clearly labelled.
Updated for 2026
Prices, picks, and efficiency research kept current for the swim season.