Raypak | 018093 | AVIA P-D404A-EN-C 399K BTU Natural Gas Low NOx Heater
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The Raypak 018093 AVIA P-D404A-EN-C is a 399,000 BTU natural gas Low NOx pool and spa heater designed for fast, dependable heating in residential applications. The AVIA 404A platform delivers 84% thermal efficiency and features an intuitive digital control system with Wi-Fi capability for convenient heater management.
Designed for indoor or outdoor installation, this high-capacity heater combines a copper-tube heat exchanger with polymer headers for efficient heat transfer and dependable operation in demanding pool and spa environments.
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Key Features
• 399,000 BTU natural gas pool and spa heater
• Low NOx AVIA 404A heater platform
• 84% thermal efficiency
• Copper-tube heat exchanger with polymer headers
• Wi-Fi-enabled control system
• 120/240VAC single-phase electrical operation
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Product Overview
The Raypak 018093 AVIA P-D404A-EN-C is engineered to provide powerful heating performance while simplifying pool and spa temperature management. Its 399,000 BTU input capacity makes it well suited for larger residential pools and applications where rapid temperature recovery is important. The AVIA 404A is rated for a maximum water flow of 100 GPM and can be configured for indoor or outdoor installation.
The integrated AVIA control platform provides easy access to heater operation and supports Wi-Fi connectivity for compatible remote management. Low NOx combustion technology helps reduce emissions, while the copper heat exchanger and polymer headers provide efficient heat transfer and corrosion resistance. Always verify gas supply capacity, plumbing, electrical requirements, venting, elevation, and installation clearances before installation.