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#51 Natural Gas Digital Heater 240K BTU 14995
#51 Natural Gas Digital Heater 240K BTU 14995
High-performance 266K BTU digital natural gas heater with cupro-nickel tubing and all-weather protection.
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The Ruud P-D266A Natural Gas Pool and Spa Heater delivers 266,000 BTUs of efficient heating power with a digital control system tailored for both commercial and residential use.
Built with high-grade cupro-nickel tubing and polymer headers, it resists corrosion and damage from harsh pool chemicals and challenging water conditions.
This model includes weather-resistant stainless steel and aluminum components that protect key internal elements from outdoor exposure.
Its digital electronic controls allow precise temperature management, ensuring comfort and efficiency year-round.
Rated for elevations up to 6,000 feet and designed with high-altitude compatibility, it maintains powerful heating performance in all environments.
With ASME certification and a compact yet durable cabinet, the P-D266A is a reliable choice for pool and spa heating in any climate.
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Customers praise the P-D266A’s powerful performance, even in colder climates and high altitudes.
Many found the cupro-nickel tubing especially effective for handling harsh pool chemicals without deterioration.
The digital controls make it easy to maintain a consistent and comfortable water temperature with minimal effort.
Several reviewers commented on the heater’s quiet operation and rugged outdoor durability.
Overall, users consider it a solid investment for long-term use in both home and commercial pools.
- BTU Input: 266,000
- Fuel Type: Natural Gas
- Control Type: Digital Electronic
- Construction: Durable stainless steel and aluminum parts
- Tubing Material: Cupro-nickel for corrosion resistance
- Weather Protection: Built to withstand outdoor elements
- Header Material: Polymer
- Emission: Low NOx, eco-friendly operation
- Altitude Rating: Suitable for elevations up to 6,000 feet
- Application: For both pools and spas, commercial and residential
- Brand: RUUD
- Application: Pool, Spa
- Shipping Dimensions: 44 x 30 x 28 inch
- BTU Input: 266,000 British thermal unit
- Burner Orifice Size: #51
- Cabinet Depth: 28 inch
- Cabinet Height: 38 inch
- Cabinet Width: 23 inch
- Channel: Pool Equipment
- Commercial, Residential, or Professional: Commercial, Residential
- Control Type: Digital Electronic
- Each Product Weight: 248 pound
- Elevation Max: 6000 foot
- Elevation Min: 2000 foot
- Flow Rate Max: 125 gal/min
- Flow Rate Min: 125 gal/min
- Flue Diameter: 7 inch
- Frequency Rating (Hz): 60
- Fuel Type: Natural Gas
- Gas Connection: 0.75 inch
- Gas Connection FIT: NPT
- Green or Energy Efficient Product: True
- Header Material: Polymer
- High Altitude Model: True
- Indoor Drafthood: 62 inch
- Master Carton Quantity: 1
- Minimum J: 11 inch
- Minimum Sell Quantity: 1
- Pallet Quantity: 1
- Phase: Single
- Stackless Outdoor Top: 40 inch
- Standards Approvals: ASME Certified
- Tubing Material: Cupro Nickel
- Voltage: 115V, 230V
- UPC Code: 840891032946
Q: What type of tubing does the Ruud P-D266A use?
It uses cupro-nickel tubing, which offers excellent resistance to corrosion and chemical wear.
Q: Is this heater compatible with high-altitude installations?
Yes, it is rated for elevations up to 6,000 feet, making it ideal for higher elevation applications.
Q: Does the unit require professional installation?
Professional installation is highly recommended to ensure proper setup and safe operation.

Pool heaters and heat pumps are not returnable once installed or connected. Double-check fuel type, voltage, and sizing before installation.
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Ruud offers high-performance pool and spa heaters engineered for efficiency, reliability, and long-term value. Whether you're heating a residential pool or a commercial spa, Ruud systems are built to deliver consistent temperature control with lower energy costs. At AquaDoc, we provide a variety of Ruud pool heaters to help you enjoy warm water and extend your swim season with confidence.
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