The Raypak 009218 (P-R336A-EN-C) is a 336,000 BTU natural gas residential pool and spa heater built for straightforward performance and reliable season-to-season use. It's a solid choice for mid-to-large inground pools, with digital controls, electronic ignition, and Raypak's proven low-profile outdoor design. This is the standard copper exchanger / polymer header configuration — the right pick for chlorinated pools with well-maintained water chemistry.

Key Features

• 332,500 BTU natural gas input — electronic spark-to-pilot ignition fires only on call for heat, conserving gas between cycles
• Copper fin tube heat exchanger with polymer headers — fully nonferrous waterway with stainless steel tube sheets; no rust contamination in pool water
• ProTek Shield module included — sacrificial protection for the heat exchanger, replaceable to extend heater life
• Microprocessor digital controls with self-diagnostics — plain-English display readouts, remote compatible with any 2- or 3-wire system, built-in voltmeter and run-time/cycle meter
• Unitherm Governor + automatic bypass — prevents condensation, sooting, and scale buildup; handles up to 125 GPM without modification

Pair with a pool automation system using a standard 2- or 3-wire remote connection — the 009218 integrates cleanly with most major control platforms out of the box.

This model uses a copper heat exchanger and is not recommended for saltwater pools. For salt water or aggressive water chemistry, see the cupronickel model 014940 instead. Professional installation by a licensed contractor is required — and warranty registration must be completed — to receive the full 2-year parts and labor warranty.