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Raypak

Raypak Digital Natural Gas Pool Heater, 399,000 BTU, Copper | 009223

Raypak Digital Natural Gas Pool Heater, 399,000 BTU, Copper | 009223

$4,200.00
$4,620.00 $4,200.00
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Raypak Digital P-R406A-EN-C #51 — 399,000 BTU Natural Gas Copper Heater (2,000–6,000 ft)

The P-R406A-EN-C is the largest standard Digital gas heater in copper — natural gas. This #51 version is rated for 2,000–6,000 ft elevation; if you're below 2,000 ft, order the #50 version instead.

Quick Stats

  • 399,000 BTU input
  • Natural gas
  • Copper heat exchanger (standard durability)
  • Rated for 2,000–6,000 ft elevation — confirm your installation elevation before ordering
  • Digital electronic ignition — no standing pilot
  • Microprocessor thermostat with on-board diagnostics
  • Built-in bypass, handles up to 125 GPM water flow

How to Read a Raypak Digital Model Number

[Header]-R[BTU]A-[Ignition][Fuel]-[Material] #[Elevation] — P/B = header type (Polymer standard / Bronze Professional), E/M = ignition, N/P = fuel, C/X = tube material (Copper/Cupro-Nickel). #50/#51/#52 (natural gas) = elevation: 0–2,000 ft / 2,000–6,000 ft / 6,000–9,000 ft. Propane uses #57/#58/#61 for the same tiers.

Elevation match matters for combustion safety and warranty coverage — confirm your installation altitude before ordering.

Sizing Guidance

399,000 BTU is the maximum standard-tier output — best for very large pools, high-demand spas, or where recovery speed matters most. If this feels like overkill for your pool size, the 332,000 BTU model saves about $570.

Copper vs. Cupro-Nickel vs. Professional Series

Standard copper tubing is proven and economical for most installations. If you want this same output with commercial-duty construction, the B-R408-EN-X Professional Series is the step up.

Install Note

Gas heater installation involves gas line sizing, venting, and electrical work — use a licensed professional per local code. Confirm elevation, gas type, and BTU needs with your installer before ordering.

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