The Raypak Digital 406A (P-R406A-EP-X #57, SKU 014953) is a 399,000 BTU liquid propane pool and spa heater with a cupro-nickel heat exchanger, built for inground residential pools at elevations up to 2,000 feet. It's the propane equivalent of the natural gas 014941 — the right call for LP-supplied properties with saltwater pools or aggressive water chemistry.

Key Features

• 399,000 BTU liquid propane — sized for inground pools up to approximately 40,000 gallons
• Cupro-nickel fin tube heat exchanger — significantly more resistant to corrosion from salt, low pH, and heavy use than standard copper
• ProTek Shield — replaceable corrosion-protection module that extends heat exchanger life
• Digital LCD thermostat with on-board diagnostics — live water temp readout and fault codes displayed on the panel
• Remote compatible — connects to most 2-wire and 3-wire pool automation systems
• Wind-resistant powder-coated cabinet — galvanized metal housing rated for combustible surface installation

On a traditionally chlorinated propane pool? The standard copper model SKU 009227 is a more cost-effective choice — cupro-nickel is most valuable in saltwater or high-demand environments.

Rated for 0–2,000 ft elevation only. Verify your propane supply line sizing with a licensed gas technician before install — undersized LP lines are a common cause of ignition and performance issues on high-BTU heaters.