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Raypak Raypak 337A Low NOx Digital Natural Gas Heater #26 with Bronze Headers CU-NI 17711
Raypak Raypak 337A Low NOx Digital Natural Gas Heater #26 with Bronze Headers CU-NI 17711
A high-efficiency, durable pool and spa heater with digital controls and weather-resistant design.
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The Raypak 337A Low NOx Digital Natural Gas Heater #26 with Bronze Headers CU-NI 17711 is a high-efficiency pool and spa heater designed for both residential and commercial use.
It features a 332,500 BTU heating capacity, ensuring rapid and consistent water heating.
The digital thermostat and electronic ignition system provide precise temperature control and reliable startups. Its compact, weather-resistant design includes a corrosion-resistant galvanized metal cabinet and wind-resistant construction for durability.
The heater is compatible with most major pool control systems and includes a Unitherm Governor to prevent condensation and scale buildup.

⭐⭐⭐⭐⭐
Customers praise the Raypak 337A for its high efficiency and rapid heating capabilities.
The digital thermostat and electronic ignition system are highlighted for their reliability and ease of use.
Reviewers appreciate the heater's durable, weather-resistant design and corrosion-resistant materials.
Many users note its compatibility with various pool control systems as a significant advantage.
The Unitherm Governor feature is also commended for extending the heater's lifespan."

- High-Efficiency Heating: Delivers 332,500 BTU for rapid and consistent water heating.
- Digital Thermostat: Ensures precise temperature control for optimal comfort.
- Electronic Ignition: Provides reliable startups with minimal maintenance.
- Weather-Resistant Design: Features a corrosion-resistant galvanized metal cabinet and wind-resistant construction.
- Unitherm Governor: Prevents condensation and scale buildup, extending the heater's lifespan.

- Brand: Raypak
- Commercial, Residential, or Professional: Commercial
- Shipping Dimensions: 44.5 x 31 x 30.5 inch
- Each Product Weight: 230 pound
- Minimum Sell Quantity: 1

Q: What is the heating capacity of the Raypak 337A?
A: The heater has a 332,500 BTU capacity for rapid and consistent heating.
Q: Is this heater suitable for commercial use?
A: Yes, it is designed for both residential and commercial applications.
Q: Does the heater come with a warranty?
A: Warranty details can be obtained from the manufacturer or authorized dealers.


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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Raypak is a trusted name in pool and spa heating, offering energy-efficient gas heaters and heat pumps built for long-lasting performance. Whether you're warming up your pool for year-round use or extending your swim season, Raypak delivers reliable temperature control. At AquaDoc, we offer a wide selection of Raypak pool heaters to help you enjoy comfortable water—whenever you want it.
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