Raypak 266,000 BTU Digital Gas Pool Heater vs PRO Inverter Pool Heat Pump 100,000 BTU

The Raypak is the pick for a large in-ground pool or spa on natural gas that needs fast, powerful heat and a long service life. Its 266,000 BTU output and copper exchanger heat far bigger volumes than the PRO, and the digital controls, Unitherm governor and Protek Shield address the corrosion that kills heaters. The PRO is the better fit for smaller pools up to about 26,000 gallons, especially where gas isn't available: the inverter heat pump is far more efficient, quieter, and adds cooling and app control. Owners rate the PRO highly and praise its quiet operation and app, but warn it underperforms when undersized or in cold weather.

• Choose the Raypak if you have a natural gas line, a large pool or spa, and want the fastest heat and the simplest, most durable gas setup.
• Choose the PRO if your pool is under about 26,000 gallons, you want low running costs, quiet operation, cooling in summer and app control.