The Raypak Digital 406A (P-R406A-EN-C, SKU 009219) is a 399,000 BTU natural gas pool and spa heater designed for inground residential pools at elevations up to 2,000 feet. It delivers fast, reliable heating with a fully digital control interface and Raypak's proven copper heat exchanger — a straightforward, low-maintenance choice for pools up to roughly 40,000 gallons.

Key Features

• 399,000 BTU natural gas — sized for inground pools up to approximately 40,000 gallons
• Copper fin tube heat exchanger — integral extruded copper construction for efficient, reliable heat transfer
• 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

Have a saltwater pool? The copper heat exchanger on this model can degrade faster in high-salinity water. Consider the cupro-nickel version (SKU 014941) instead.

Rated for 0–2,000 ft elevation only. For installs at 2,000–6,000 ft, order SKU 009223 instead.