FibroPool
FibroPool FH255 Pool Heat Pump (55K BTU)
Best budget heat pump — The cheapest real way into heat-pump efficiency — a 55,000 BTU titanium-coil unit for pools up to ~10,000 gallons, at roughly a third the price of the major brands
Specs
| Heat source | Electric — pulls heat from the air |
| Output | 55,000 BTU |
| Run cost | Low (marketed COP ~5.9) |
| Heating speed | ~1°F/hr |
| Heats on demand | Yes, above ~50°F |
| Best for | Smaller pools on a tight budget |
Pros
- By far the cheapest path to heat-pump running costs (~$2,300 vs $5,000+ for the majors)
- Titanium heat-exchanger coil with a lifetime coil warranty — the right material at this price
- Sized for pools up to ~10,000 gallons (above-ground or small in-ground); 240V
Cons
- 55,000 BTU is small — too little heater for an average or large in-ground pool; size honestly
- Value brand with a limited dealer network; the marketed ~5.9 COP has no stated test standard
- Same heat-pump weakness: efficiency falls off below ~50°F
“Had the FH255 for a year and a half. Installed at the end of 2024 pool season, but we got the water to a very comfortable 82-84 degrees.”— Mike G., FibroPool · Verified owner
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Data last verified: Jun 2026. Ratings are real, dated reads — never scraped or invented. Full methodology and monetization disclosure: how we test.