Raypak B-R407A-EN-C Digital Low NOx ASME Natural Gas Heater | 399K BTU, Copper, Bronze Headers | 017708Product Overview The Raypak 017708 B R407A EN C Digital Low NOx ASME Natural Gas Heater is a high capacity pool and spa heater designed for powerful heating performance, digital operation, and commercial grade ASME construction. With a 399,000 BTU natural gas heating capacity, this model is well suited for larger commercial pools, spas, facility pools, and residential applications where ASME rated equipment is required. This heater features a copper

Suitable for new or existing residential pool systems

This bundle is commonly listed as without IntelliChlor salt chlorine generator

Cover hardware (if included by the manufacturer packaging)

and header gaskets

this cartridge ensures your pool water remains exceptionally clean and inviting

even in harsh outdoor environments

Helps correct light engine

This kit includes the main sealing components commonly replaced during motor service

Includes unions and hose barb adapters for installation flexibility

1 Phase Operation – Optimized for residential and light commercial pool systems

Note: The thermal regulator assembly is typically purchased separately

Professional pool service repairs and equipment pad maintenance