Product Overview

The Raypak AVIA HD P-R404A-EN-N (Part #018045) is a premium 399,000 BTU natural gas pool and spa heater engineered to deliver rapid heating, advanced smart controls, and exceptional durability. Featuring Raypak's innovative NiTek® Heat Exchanger Technology, built-in Wi-Fi connectivity, and Low NOx emissions, the AVIA HD is designed for homeowners seeking high performance, energy efficiency, and simplified operation.

Unlike traditional copper or cupro-nickel heat exchangers, the AVIA HD utilizes NiTek® technology, which Raypak states is approximately 300% more erosion resistant than copper and 200% more resistant than cupronickel, making it an outstanding choice for saltwater pools and demanding water conditions.

The heater includes integrated Raymote™ Wi-Fi connectivity, allowing users to monitor heater status, adjust temperatures, receive service alerts, and manage schedules directly from a compatible smartphone without requiring an additional remote-control module. Its compact 2 ft. x 2 ft. footprint simplifies both new installations and equipment replacements where space is limited.

Key Features

• 399,000 BTU heating capacity
• Natural gas operation
• Low NOx emissions
• Advanced NiTek® heat exchanger
• Built-in Wi-Fi connectivity
• Raymote™ mobile app control
• Smart scheduling capability
• Smart equipment automation
• Digital touchscreen controls
• Polymer headers
• ProTek Shield™ corrosion protection
• Compact 2' x 2' installation footprint
• Electronic ignition
• Indoor or outdoor installation (per code)
• Compatible with residential in-ground pools and spas

Benefits

The AVIA HD heats pools and spas quickly while providing industry-leading durability through its NiTek heat exchanger. This advanced material offers superior resistance to corrosion and erosion, making it particularly well suited for saltwater pools and challenging water chemistry.

Built-in Wi-Fi eliminates the need for separate communication modules. Owners can remotely monitor operating status, change temperatures, receive maintenance notifications, and control heater functions through the Raymote app.

The compact cabinet weighs approximately 135 pounds, making installation easier than many competing 400K BTU heaters while minimizing equipment pad space requirements. Smart Automation also allows the heater to coordinate with compatible Raypak Protégé variable-speed pumps and selected auxiliary equipment for improved system efficiency.

Specifications

Specifications are based on Raypak's published AVIA HD product data for model P-R404A-EN-N (018045).

Installation Information

Install the heater on a solid, level, non-combustible equipment pad with the clearances specified by Raypak. The natural gas supply must be properly sized to deliver the full heating input while maintaining correct operating pressure.

The heater should be installed downstream of the pool filter and upstream of any chlorinator or salt chlorine generator. Proper bonding, grounding, gas piping, electrical connections, venting, and water flow must comply with local building codes and the Raypak installation manual.

Professional installation by a licensed pool contractor or qualified gas technician is strongly recommended.

Confirm Before Ordering

Verify the following before purchasing:

• You require the natural gas model.
• Your pool or spa requires approximately 400,000 BTU heating capacity.
• Your gas supply is properly sized.
• Your plumbing uses compatible 2-inch buttress connections.
• Your electrical service supports 120/240V single-phase operation.
• Your equipment pad has adequate installation clearance.
• The required model is P-R404A-EN-N (018045).

Warranty Information

Raypak residential AVIA HD heaters include a 3-year limited parts and labor warranty when installed according to the manufacturer's requirements and warranty terms. Warranty coverage may vary depending on installation type, application, and local distributor policies.

Warranty does not cover improper installation, freeze damage, incorrect gas pressure, inadequate water flow, chemical abuse, improper water chemistry, unauthorized repairs, or installation that does not comply with Raypak requirements.

Customer Q&A

Is this heater suitable for saltwater pools?
Yes. The NiTek® heat exchanger provides exceptional corrosion resistance and is specifically designed for demanding pool environments, including properly maintained saltwater pools.

Does this heater include Wi-Fi?
Yes. Built-in Wi-Fi allows remote control and monitoring through the Raymote™ mobile application.

Can it heat both a pool and spa?
Yes. The AVIA HD is designed for residential in-ground pools, spas, and combination pool/spa systems.

What is the difference between the AVIA and AVIA HD?
The AVIA HD features the advanced NiTek® heat exchanger, while standard AVIA models use a copper heat exchanger.