Quick answer
DIY solar panel kits like the SmartPool S601P SunHeater (~$300–$315 for the complete 2-panel, 80 sq ft kit) heat a pool for a fraction of what a full solar water-heating system costs — professionally installed unglazed systems run $2,500–$6,500 according to U.S. Department of Energy program guidance, which also puts typical solar pool-heating payback at 2–7 years depending on local fuel prices. Solar won’t heat your pool on a cold, cloudy day, but sized right in a sunny climate it can add 6–12°F and stretch your season by weeks — with no fuel bill and only the pump electricity you already pay for (about $10–$25 a month). We compared the best solar pool heaters of 2026 on heat gain per dollar, install difficulty, and durability.
Last updated 2026-09-10: reconfirmed current prices across retailers — see the corrected figures below.
Best solar pool heaters at a glance
| System | Type | Best for | Price | Rating |
|---|---|---|---|---|
| SmartPool S601P SunHeater | Panel kit (2x 2'x20') | Best overall | ~$300-$315 | ★★★★★ |
| GAME 4721 SolarPRO Curve | Dome | Above-ground pools | ~$170-$200 | ★★★★☆ |
| FAFCO Solar Bear | Panel kit | Premium / roof mount | ~$360 | ★★★★½ |
| Intex Solar Mat | Mat (single) | Budget / small pools | ~$35-$45 | ★★★★☆ |
1. SmartPool S601P SunHeater — Best Overall
SmartPool S601P SunHeater (two 2'x20' panels)
- The S601P ships as a complete 2-panel kit (80 sq ft total), not single panels — link multiple kits in series if your pool needs more collector area.
- Modular polypropylene panels; ties into your existing pump and filter with basic PVC fittings.
- Mounts on a roof, rack, or the ground.
- Requires real sun hours and some plumbing effort. Manufacturer-rated to raise pool temperature up to 15°F under favorable conditions.
The SunHeater is our top pick because it scales. Buy enough S601P kits to match your pool’s surface area, connect them in series, and route your return water through them during the day. It’s the most cost-effective way to add real, free heat to an in-ground pool. Add kits as your budget allows — and get them fast: try Amazon Prime free for 30 days for two-day delivery.
2. GAME 4721 SolarPRO Curve — Best for Above-Ground Pools
GAME 4721 SolarPRO Curve
- Curved dome design captures sun at more angles through the day.
- Includes fittings for Intex/Bestway and standard above-ground pumps.
- Ground-level, connect-and-go install — no roof work.
- One dome adds modest heat; stack several for a real gain.
For above-ground pool owners who don’t want to climb on a roof, the SolarPRO Curve is the simplest way in. Its dome shape catches low-angle morning and evening sun, and the included adapters fit the most common above-ground pumps out of the box.
3. FAFCO Solar Bear — Best Premium / Roof Mount
FAFCO Solar Bear Economy Kit
- Industry-veteran solar brand with proven longevity.
- Complete kit with mounting hardware for a permanent roof install.
- Per FAFCO's own specs, each 3'9"x20' panel is rated for roughly a 10°F temperature rise and 80,000 BTU of output — higher heat gain and better durability than budget panels.
- More involved install; best for a permanent setup.
FAFCO has been making solar collectors for decades, and it shows. If you want a permanent, high-output roof system that will still be working in ten years, the Solar Bear kit is the durable choice.
4. Intex Solar Mat — Best Budget
Intex Solar Heater Mat
- The cheapest way to try solar heating — priced closer to $35-$45 per mat at most retailers than the higher figure some listings show.
- Connects with Intex 1.25"/1.5" hose adapters — no tools.
- Great booster for small soft-side pools; manufacturer-rated for a 5-9°F rise.
- Low output on its own; chain several for meaningful heat (sold in 2-pack and 4-pack bundles too).
If you just want to test the idea, the Intex Solar Mat is a low-risk $70. Roll it out in the sun, connect the hoses, and you’ll feel a few degrees on a small pool. Link two or three for a bigger lift.
How to choose a solar pool heater
- Size to your pool — Aim for collector area equal to 50–100% of your pool’s surface.
- Sun exposure — Mount where panels get unshaded midday sun; south-facing is best.
- Add a solar cover — Panels add heat; a cover keeps it overnight. Use both.
- Plan the plumbing — You’ll tap your return line with a diverter valve; most kits include what you need.
The bottom line
The SmartPool SunHeater is the best overall solar pool heater — modular, scalable, and the best heat-per-dollar for in-ground pools. Above-ground owners should grab the GAME SolarPRO Curve for its no-roof install, spring for the FAFCO Solar Bear if you want a permanent premium system, and try the Intex Solar Mat to dip a toe in for around $35-$45. One thing not to factor into the budget: the federal solar tax credit doesn’t apply here — see our pool heater tax credit guide for why solar pool heating has always been explicitly excluded from that credit, and why it’s gone for everyone in 2026 anyway.