Need help choosing this Raypak heater? Call 725-205-1783 or email sales@poolsupplydepot.net with your existing heater model, fuel type, installation ZIP code and equipment-pad photos. We can help confirm the replacement and shipping or freight options. Local pickup is available in Henderson, Nevada; confirm availability before visiting.

Product Overview

The Raypak Digital® P-R266A-EN-C #51 Natural Gas Heater is designed to deliver dependable residential pool and spa heating in higher-elevation installations. With 266,000 BTU heating performance, electronic ignition, polymer headers, and a copper heat exchanger, this heater provides strong natural gas heating for small to mid-sized and medium residential pool applications.

This #51 model is configured for 2,000–6,000 ft elevation applications, making it a suitable choice for customers who need a Raypak digital heater designed for higher-altitude operation. Its digital control panel allows easy temperature adjustment and system monitoring, while durable construction helps support long-term outdoor performance.

Ideal For

This heater is ideal for residential pool owners who need a natural gas pool heater designed for higher-elevation installations.

In-ground pools and attached spas

Small to mid-sized residential pools

Medium residential pool applications

Higher-elevation installations from 2,000–6,000 ft

Outdoor equipment pad installations

Natural gas pool heating systems

Customers replacing an older Raypak 266A high-altitude heater

Customers who want digital controls with electronic ignition

Key Features

Digital Control Panel: The easy-to-use digital interface allows simple temperature adjustment and helps monitor heater operation and service diagnostics.

266,000 BTU Heating Performance: Provides dependable heating power for residential pools and spas.

High-Altitude #51 Configuration: Designed for 2,000–6,000 ft elevation applications.

Natural Gas Operation: Designed for use with natural gas fuel systems.

Electronic Ignition: Starts efficiently without the need for a standing pilot.

Copper Heat Exchanger: Delivers effective heat transfer for standard residential pool applications.

Polymer Headers: Help resist corrosion and support long-term durability.

Corrosion-Resistant Cabinet: Built to withstand outdoor pool equipment environments.

High-Wind Resistance: Designed to perform reliably in outdoor equipment pad environments.

Unitherm Governor: Helps prevent condensation and supports efficient heater operation.

Remote Compatible: Can be connected to compatible 2-wire or 3-wire pool control systems for added convenience.

Benefits

The Raypak Digital® P-R266A-EN-C #51 gives pool owners dependable natural gas heating in a high-altitude configuration. Its 266,000 BTU output makes it a practical choice for residential pools and attached spas where faster heat-up performance is needed.

The digital control system makes everyday operation simple, while built-in diagnostics help make service and troubleshooting easier. Durable features such as the copper heat exchanger, polymer headers, corrosion-resistant cabinet, and high-wind-resistant design help support long-term performance in outdoor pool environments.

For customers replacing an existing Raypak 266A high-altitude heater, this model may also provide a familiar installation footprint and operating experience.

Specifications

Customer-Facing Q&A

Q: Is this heater natural gas or propane?
A: This listing is for the natural gas Raypak P-R266A-EN-C #51 model.

Q: What does #51 mean on this Raypak heater?
A: The #51 version is configured for higher-elevation applications, typically from 2,000–6,000 ft.

Q: Is this a digital heater?
A: Yes. This model includes Raypak’s digital control system for easy temperature adjustment and operational diagnostics.

Q: Does this model have electronic ignition?
A: Yes. This heater uses electronic ignition.

Q: Is the heat exchanger copper or cupro-nickel?
A: This model uses a copper heat exchanger. It is not the cupro-nickel version.

Q: Can this heater be used with saltwater pools?
A: This model may be used with properly balanced pool water. For saltwater pools or more demanding water conditions, many customers often prefer a cupro-nickel heat exchanger model for added corrosion resistance.

Q: Does this heater require professional installation?
A: Yes. Gas pool heaters should be installed by a licensed plumber, qualified pool professional, or gas appliance technician according to local code requirements.

Q: Can this heater be installed at sea level?
A: This #51 model is intended for higher-elevation applications from 2,000–6,000 ft. For lower elevations, customers should select the standard elevation model instead.

Q: Can this heater be installed indoors?
A: This model is commonly used for outdoor installation. Indoor installation requires proper venting and must follow the manufacturer’s instructions and local code requirements.

Q: Is this heater Low NOx compliant for California SCAQMD areas?
A: This standard model may not meet all Low NOx requirements in certain California jurisdictions. Customers in areas with strict emissions rules should confirm local code requirements before purchasing.