Product Overview
The Raypak P-R404A-EN-N Avia HD Natural Gas Heater (018045) delivers 399,000 BTU of powerful heating with advanced efficiency and control. Equipped with a NiTek heat exchanger, this unit offers superior durability, improved corrosion resistance, and longer service life compared to traditional copper exchangers. The Low NOx burner system ensures cleaner operation and compliance with air-quality regulations, while built-in Wi-Fi allows full remote monitoring and temperature control through smart devices. Polymer headers add lasting durability, making the Avia HD an excellent choice for demanding pool and spa environments.
Ideal For
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Large residential or commercial in-ground pools
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Attached spas needing fast heat-up times
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Users who want remote control through Wi-Fi-enabled systems
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Installations requiring Low NOx compliance
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Pools in harsh environments seeking advanced corrosion protection
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Owners wanting a modern, tech-forward, high-output heater
Customer Q&A
What advantages does the NiTek heat exchanger offer?
NiTek is more corrosion-resistant than copper, providing longer life and improved durability, especially in challenging water conditions.
Does this heater support Wi-Fi control?
Yes — the built-in Wi-Fi allows full remote operation, temperature adjustment, and monitoring from your phone or smart device.
Is it suitable for saltwater pools?
Yes — the NiTek exchanger offers improved resistance over copper; however, proper water balance is still essential for long-term performance.
Is the heater Low NOx compliant?
Yes. The Avia HD uses a Low NOx burner system that meets strict air-quality standards.
How powerful is the heating performance?
With 399K BTU, this heater delivers rapid, high-output heating suitable for large pools and fast spa warm-up times.
Do I need a professional installer?
Yes. Natural gas connections, electrical wiring, and venting must be handled by a licensed professional.