Raypak P-R406A-EN-X Digital Electronic Ignition Cupro Nickel Natural Gas Heater 406,000 BTU | 014941

Raypak Digital 406K BTU Natural Gas Pool Heater - Cupro Nickel - P-R406A-EN-X | 014941

ProTek Shield™ Technology

Microprocessor-Controlled Thermostat

Smart Pool & Remote Compatible

Price

$4,540.00

The Raypak P-R406A-EN-X is the highest-capacity residential heater in the Raypak lineup, upgraded with a commercial-grade Cupro-Nickel heat exchanger. This model is specifically engineered for large-scale luxury pools, high-volume spas, and environments with salt-chlorine generators or aggressive water chemistry. With a massive 406,000 BTU output, the 014941 provides the fastest possible heat-up times, ensuring your pool or spa is ready for use in a fraction of the time required by smaller units, while offering the maximum corrosion protection available.

Features

Ultra-Durable Cupro-Nickel Heat Exchanger: Constructed from a premium copper-nickel alloy, this heat exchanger is significantly more resistant to erosion and corrosion than standard copper. It is the gold standard for salt-water pools and high-flow systems, providing a much longer service life under harsh conditions.

Unmatched Heating Speed: Delivering 406,000 BTUs of raw power, this unit is designed for rapid temperature gains in the largest residential pools. It is the perfect solution for "on-demand" heating of large attached spas, even in the dead of winter.

Microprocessor-Controlled Thermostat: The intuitive digital display allows you to set your pool and spa temperatures independently to within one degree. The system features constant self-diagnostics to monitor performance and alert you to any issues immediately.

Reliable Electronic Ignition: Features a robust "spark-to-pilot" ignition system that only lights when there is a call for heat. This modern design eliminates the need for a standing pilot light, saving on gas costs and preventing the flame from blowing out in high-wind conditions.

PolyFlo Integrated Bypass: Raypak’s patented bypass design balances the water flow through the heat exchanger automatically. This prevents condensation and scale buildup, protecting the heater's internal components and maintaining peak thermal efficiency.

ProTek Shield Technology: Includes a specialized, replaceable module designed to protect the heat exchanger from the damaging effects of galvanic corrosion (electrolysis), which is a leading cause of heater failure in modern pool environments.

Non-Corrosive Cabinet Construction: The heater is housed in a polyester-coated, galvanized steel cabinet that is built to resist rust, UV fading, and harsh weather. Its wind-resistant design ensures the burner stays functional even in difficult outdoor or coastal environments.

Specs


Heat Output	406,000 BTU
Fuel Type	Natural Gas
Heat Exchanger	Cupro-Nickel (Maximum Durability)
Ignition Type	Digital Electronic (Spark-to-Pilot)
Water Connection	2" CPVC Unions
Elevation Rating	0 – 2,000 Feet (High-Altitude models available)
Efficiency Rating	82%
Model Number	P-R406A-EN-X / 014941

Notes

Professional Setup Required: Due to its high BTU rating, this heater requires precise gas line sizing (typically 1.25" to 1.5" depending on the distance from the meter) and proper venting. It must be installed by a licensed HVAC or pool professional to ensure safety and to validate the manufacturer's warranty.

Raypak Digital Heater Highlights

Heat Exchanger

Our Digital Gas Pool and Spa Heater includes various application options based on fin tube materials including: copper and cupronickel, both available as ASME1.

Digital Controls

Equipped with an intelligent control system that can easily be tied into an existing remote system, our heater also features a microprocessor-controlled thermostat for setting the perfect temperature for your pool or spa.

Flexible Installation

Whether upgrading your existing system or adding a new pool or spa to your home, the Raypak Digital Gas Pool and Spa Heater offers you flexible installation solutions.

Bonus: The self-adjusting burner compensates for gas pressure fluctuations, ensuring that the heater will always burn clean and safe.

Manuals & Documents

Raypak Owner's Manual

Raypak Digital Heater Brochure

Raypak Digital Heater Reference Guide

Raypak Warranty Info

What will it cost to heat your pool?

Fuel and electricity prices vary a lot by region, so put in your own rate from your last bill and get a number that's actually yours.

1 · Your pool

Pool size

Water now 68°F

Temperature you want 84°F

You need to raise the water 16 degrees

2 · Your heater & rate

Heater type

Fuel Set at the factory — you buy the version matching the fuel you have.

Heater size Figured at 82% efficiency, the rating on Raypak Digital heaters.

Cost per therm Use the all-in rate from your gas bill, including delivery charges.

And what about month to month?

Warming the pool up is a one-off. Most of what you'll actually spend is holding that temperature — replacing the heat your pool loses to the air, day and night.

Average outdoor temperature 65°F

Day and night averaged together, for the month you're picturing.

With a solar cover

Per month

$0.00

—

Per month — no cover

$0.00

—

Keeping a solar cover on saves roughly $0.00 a month here — most of a heated pool's heat leaves by evaporation off an open surface, so a cover is the cheapest thing you can do to bring this figure down.

Warm-up figures are the physics with no heat loss. Your pool loses heat to evaporation, wind and cool air the whole time the heater runs, so those numbers are a floor, not a forecast. The real-world line adds a typical 25–50%.

Monthly figures are an estimate, and a rough one. They assume you hold your target around the clock for 30 days. Real heat loss swings a long way with wind, humidity and how much sun your pool gets — an exposed, windy yard can run well above these numbers and a sheltered sunny one below. Treat them as a ballpark for comparing options, not a quote.

Warm-up uses gallons × 8.34 × degrees of rise. Monthly uses an estimated heat loss across your pool's surface area against the temperature difference with the air, at 82% thermal efficiency for gas. Pool presets assume 4 ft of water in a 52" wall and 3.5 ft in a 48" wall. Estimates only. Not sure of your pool volume or which heater fits? Get in touch.