⭐ Best Picks
Our top-rated pool heaters, ranked head to head by pool type and budget.
Aquastrong Pool Heater Review 2026: Which Model to Buy and What the Spec Sheet Hides
Aquastrong heat pumps run $649 to $3,699 on its own store, but the 35,000 BTU and 15.8 COP headlines are best-case numbers. Real 59°F output, the warranty fine print, and which model to buy.
Best PicksBest Pool Heater Sacrificial Anode Replacements 2026: Raypak & Jandy
Which pool heaters actually use a replaceable sacrificial anode — Raypak's ProTek Shield and Jandy's zinc anode kit — part numbers, prices, and why Pentair and Hayward skip it.
Best PicksQuietest Pool Heater 2026: Decibel Ratings by Brand Compared
AquaCal, Pentair, Jandy, Hayward, and Raypak pool heaters compared on noise — which brands publish a real decibel number, and which just say 'quiet.'
Best PicksBest Solar Pool Cover 2026: Bubble Covers Compared by Thickness & Size
Solar pool covers compared by mil thickness, round vs. rectangle sizing, and real durability tradeoffs — plus whether a reel is worth the extra cost.
Best PicksBest Pool Heater Vent Kits 2026: Raypak, Hayward & Jandy Indoor Vent Adapters
Real vent-kit part numbers and prices for Raypak, Hayward, and Jandy pool heaters — plus why a 'vent kit' means something different depending on the brand.
Best PicksBest Pool Heater for a 25,000-30,000-Gallon Pool (2026)
The right heater for a 25,000-30,000-gallon pool, plus the real BTU ceiling on single-unit residential heaters and what to do once you hit it.
Best PicksBest Pool Heater for a Small Pool (2026)
The right heater for a small pool under 5,000-6,500 gallons — 120V plug-in heat pumps, solar mats, and why a standard 240V heat pump is overkill here.
Best PicksAquaCal HeatWave Review: HeatWave vs. HeatWave SuperQuiet vs. TropiCal (2026)
AquaCal actually sells three different heat-pump lines under names that sound alike. A model-by-model breakdown of HeatWave, HeatWave SuperQuiet, and TropiCal Inverter — and a real retailer listing that mislabels one as the other.
Best PicksJandy JXi Review: JXi200N, JXi260N & JXi400N Gas Heaters Plus JE Heat Pumps (2026)
A model-by-model Jandy JXi review: the real thermal-efficiency gap between the JXi200N and its bigger siblings, and why one JE heat pump size is already obsolete while a newer 'TR' tier takes its place.
Best PicksRaypak Crosswind V Review: Standard vs. Deluxe, and the Rheem/Ruud Twins Explained (2026)
A model-by-model Raypak Crosswind V review: the real COP gap between Standard and Deluxe (heat/cool) models, and why the identical hardware ships as a Rheem and a Ruud under two other model numbers.
Best PicksPentair UltraTemp Review: 140, H/C, 120Q & ETi Hybrid Explained (2026)
A model-by-model Pentair UltraTemp review: the real COP difference between the 140 and 140 H/C, why the 120Q is the better value, and why the ETi Hybrid isn't actually a heat pump you can buy on Amazon.
Best PicksHayward HeatPro Review: HP21405T, HP50HA & HP50TA Explained (2026)
A model-by-model Hayward HeatPro review: what changed from the discontinued HP21404T to the current HP21405T, and the real spec gap hiding behind the HP50HA vs. HP50TA names.
Best PicksBest Pool Heater Transformer Replacements 2026: Raypak, Pentair, Hayward & Jandy
Real OEM transformer part numbers and prices for Raypak, Pentair, Hayward, and Jandy pool heaters — plus how to tell it from a dead control board.
Best PicksBest Pool Heater Pressure Relief Valve 2026: Raypak, Pentair, Hayward & Jandy
Real OEM pressure relief valve part numbers and prices by brand — and why most heat pumps don't use one the way gas pool heaters do.
Best PicksBest Pool Heater Bypass Kit 2026: FibroPool, Pentair & Hayward
The right bypass kit for a heat pump or gas pool heater — real part numbers and prices for FibroPool, Pentair, and Hayward, and how a kit differs from a valve.
Best PicksBest Pool Heater Drain Plug & O-Ring 2026: Raypak, Pentair, Hayward & Jandy
The correct OEM drain plug and O-ring for a Raypak, Pentair, Hayward, or Jandy pool heater — real 2026 part numbers and prices, the cheapest fix for a small heater leak.
Best PicksBest Rheem Pool Heater 2026: Digital Gas & Crosswind V Heat Pumps Compared
Rheem's pool heaters are built by its own subsidiary, Raypak — we compare the Rheem-branded 266K gas heater and Crosswind V heat pump by price.
Best PicksBest Pool Heat Pump Compressor Replacements (2026): OEM Parts & When to Replace the Heater Instead
Real 2026 OEM compressor part numbers and prices for Hayward, Pentair, AquaCal & Raypak heat pumps — and the 50% rule that tells you when a new heater beats a repair.
Best PicksBest Pool Heat Pump Fan Motor Replacements 2026: Hayward, Pentair, AquaCal & Raypak
Real 2026 OEM fan motor part numbers for Hayward, Pentair, AquaCal & Raypak heat pumps — and why a humming unit usually isn't the motor at all.
Best PicksBest Pool Heater Control Panel & Keypad Replacement 2026: By Brand
Real OEM keypad and bezel part numbers and 2026 prices for Raypak, Pentair, Hayward, and Jandy pool heaters — and why this isn't the same part as the control board.
Best PicksBest Pool Heater Manifold & Header Replacements 2026: Raypak, Pentair, Hayward & Jandy
The correct OEM manifold or header for a Raypak, Pentair, Hayward, or Jandy pool heater — real 2026 part numbers and prices, one of the pricier heater parts.
Best PicksBest Pool Heater Gas Conversion Kit 2026: Natural Gas ↔ Propane by Brand
Real OEM natural-gas-to-propane conversion kit part numbers and prices for Pentair, Hayward, and Raypak pool heaters — plus why the swap isn't quite a solo weekend job.
Best PicksBest Pool Heater Control Board 2026: OEM Parts by Brand (and Why It's Not a Weekend DIY)
Real OEM control-board part numbers and prices for Raypak, Pentair, Hayward, and Jandy pool heaters — and why this one's better left to a technician.
Best PicksBest Hayward Pool Heater 2026: Gas, Heat Pump & Above-Ground Models Compared
Hayward Universal H-Series gas heaters, the HeatPro MCHX heat pump, and the H100ID1 above-ground unit compared, so you can pick the right Hayward model and price.
Best PicksBest Pool Heater High-Limit Switch 2026: OEM Parts by Brand (and When It's Not the Switch)
Real OEM high-limit switch part numbers and prices for Raypak, Pentair, Hayward, and Jandy — plus why most trips aren't actually a bad switch.
Best PicksBest Pool Heater Check Valve 2026: Stop Chlorinator Backflow & Heat Exchanger Corrosion
The right check valve to protect a pool heater from backflowing chlorinated water and thermosiphon heat loss — real products, prices, and where in the plumbing it goes.
Best PicksBest Pool Heater Gas Valve 2026: OEM Parts, Real Costs, and Why This One Isn't DIY
The OEM gas valve your technician will quote for Raypak, Pentair, and Hayward heaters — real part numbers, prices, and why this repair isn't DIY.
Best PicksBest Pool Heater Capacitor Replacements 2026: Hayward, Pentair & AquaCal/Gulfstream
The correct OEM run capacitor for a Hayward HeatPro, Pentair UltraTemp, or AquaCal/Gulfstream pool heat pump — part numbers and realistic prices.
Best PicksBest Pool Heater Heat Exchanger Replacements 2026: Raypak, Pentair, Hayward & AquaCal
OEM heat exchanger replacement parts for Raypak, Pentair MasterTemp, Hayward Universal, and AquaCal/Gulfstream heat pumps — part numbers and real prices.
Best PicksBest Pool Heater Pressure Switch Replacements 2026: Raypak, Pentair, Hayward & Jandy
The correct OEM water pressure switch for a Raypak, Pentair, Hayward, or Jandy pool heater — real part numbers and prices to stop a false 'no flow' lockout.
Best PicksBest Pool Heater for a 15,000-Gallon Pool (2026)
The right-sized heat pump, gas heater, and budget pick for a 15,000-gallon pool, sitting exactly at the crossover between our two sizing-chart tiers.
Best PicksBest Pool Heater for a 10,000-Gallon Pool (2026)
The right heat pump, gas heater, and above-ground pick for a 10,000-gallon pool, with the BTU math and real heat-up times for each option.
Best PicksBest Pool Heater for a 20,000-Gallon Pool (2026)
The right-sized gas heater, heat pump, and budget pick for a 20,000-gallon pool, with the exact BTU math and real heat-up times for each option.
Best PicksBest Pool Heater Igniter Replacement Kits 2026: Raypak, Pentair, Hayward & Jandy
The right hot-surface igniter kit for a Raypak, Pentair, Hayward, or Jandy gas pool heater — compatible models, part numbers, and realistic prices compared.
Best PicksBest Pool Heater Timer 2026: Intermatic, Woods & Smart WiFi Options Compared
The best pool heater timers — Intermatic and Woods mechanical dial timers, plus DEWENWILS smart WiFi timer boxes, compared on HP rating and price.
Best PicksBest Gas Pool Heater 2026: Natural Gas Models Compared
The best natural gas pool heaters for 2026 — Pentair MasterTemp, Hayward Universal H-Series, and Raypak Digital compared on BTU output, efficiency, and price.
Best PicksBest Pool Heater for Intex Pools (2026): Heat Pump, Solar & Adapter Guide
The best heaters for Intex above-ground pools — the official solar mat and third-party heat pumps that need an adapter kit — with real 2026 prices.
Best PicksBest Pool Heater for Salt Water Pools 2026: Titanium & Cupro-Nickel Picks
Best pool heaters for salt water — which heat pumps and gas heaters survive a salt chlorine generator, and why the wrong heat exchanger corrodes in a season.
Best PicksBest Inground Pool Heater 2026: Sized by Pool Gallons
The best in-ground pool heaters for 2026, picked by pool size — small, medium, and large pools, plus what gas-line and electrical hookup requires.
Best PicksBest Commercial Pool Heater 2026: NSF-50 Options for HOAs, Hotels & Gyms
Best commercial-grade pool heaters for HOAs, hotels, and gyms — real prices, NSF/ANSI 50 certification, and why most units need a dealer quote.
Best PicksBest Propane Pool Heater 2026: Raypak, Pentair & Hayward Compared
The best propane (LP gas) pool heaters for pools without a natural gas line, compared on BTU output, price, and how much more propane costs to run than natural gas.
Best PicksBest AquaCal Pool Heater 2026: SQ125, SQ160R & SQ200R Compared
AquaCal HeatWave SuperQuiet heat pumps compared — SQ125, SQ160R, SQ200R. BTU, COP, and price compared, plus why the SQ145 and SQ225 were actually replaced by the SQ140R and SQ200R, not the SQ160R.
Best PicksBest Sta-Rite Pool Heater 2026: Max-E-Therm Gas Models Compared
Sta-Rite's Max-E-Therm gas heaters come in 200K, 333K, and 400K BTU sizes. We compare all three and explain how the brand relates to Pentair.
Best PicksBest Jandy Pool Heater 2026: JXi Gas & JE Heat Pump Models Compared
Jandy's JXi gas heaters and JE-series heat pumps compared on BTU, COP, and price — plus why Jandy dealers hide pricing online and what that means for your quote.
Best PicksBest Gulfstream Pool Heat Pump 2026: HE110, HE125 & HE150 Compared
Gulfstream pool heat pumps are now sold under Pentair — here's how the HE110-RA, HE125-RA, and HE150-RA compare on BTU, COP, and price so you can pick the right size.
Best PicksBest Pool Heater Cover 2026: Protect Your Heat Pump or Gas Heater
The best weatherproof covers for protecting a pool heat pump or gas heater year-round. Climate Shield, PAMASE, Vkinman, and Sunisfa compared on fit, material, and price.
Best PicksBest Electric Pool Heater 2026: Resistance Heaters for Spas & Small Pools
The best electric resistance pool heaters for spas and small pools — EcoSmart, Raypak, and EWANYO compared on kW, BTU output, and price.
Best PicksBest Pentair MasterTemp Pool Heater 2026: 125K, 250K & 400K Compared
The Pentair MasterTemp gas heater comes in 125,000, 250,000, and 400,000 BTU sizes with copper or cupro-nickel exchangers. We break down which size and version fits your pool.
Best PicksBest Raypak Pool Heater 2026: Gas, Heat Pump & Spa Models Compared
Raypak gas heaters, heat pumps, and electric spa heaters compared: AVIA, Digital, Crosswind V, and E3T lines, so you can pick the right Raypak model and price.
Best PicksBest Above-Ground Pool Heater 2026: Heat Pump, Gas & Solar
Best above-ground pool heaters of 2026: heat pump, gas, and solar picks sized for 5,000–15,000 gallon pools, with real BTUs, pricing, and running costs.
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.
Best PicksBest Pool Heater 2026: Gas, Heat Pump & Solar Picks Tested
The best pool heaters of 2026 — gas, heat pump, and solar — for in-ground and above-ground pools. Best-overall, best-value, and most-efficient picks compared.
Best PicksBest Solar Pool Heater 2026: Panels & Domes Tested
The best solar pool heaters of 2026: panel, dome, and mat systems compared on heat gain, price, and install — near-zero running cost.