FibroPool FH255 Pool Heat Pump vs Raypak 266,000 BTU Digital Gas Pool Heater

These are different machines for different jobs. The FibroPool FH255 is an electric heat pump that heats slowly and efficiently, best for above-ground pools or in-ground pools up to 10,000 gallons where you want to stretch the season. The Raypak 266 is a natural gas heater that heats fast and hard, sized for in-ground pools and spas up to roughly 25,000 gallons. On build, the FibroPool's enamel-coated steel case has rusted on salt pools for some owners, while the Raypak's copper exchanger and Protek Shield target corrosion from the inside.

• Choose the FibroPool FH255 if you have an above-ground pool or a small in-ground pool, want low running costs and quiet operation, and can run a 240V circuit.
• Choose the Raypak 266 if you have a natural gas line, a larger in-ground pool or spa, and want fast heat on demand rather than slow, steady warming.