Need help choosing this Raypak heater? Call 725-205-1783 or email sales@poolsupplydepot.net with your existing heater model, fuel type, installation ZIP code and equipment-pad photos. We can help confirm the replacement and shipping or freight options. Local pickup is available in Henderson, Nevada; confirm availability before visiting.

Product Overview

The Raypak P-R404A-EN-C Low NOx AVIA Natural Gas Heater | 018033 is a smart, high-performance pool and spa heater designed for fast heating, connected control, and professional-grade reliability. With a powerful 399,000 BTU input, this heater is ideal for residential pools and spas that require quick heat-up times and dependable temperature control.

The AVIA platform features built-in Wi-Fi and works with Raypak’s Raymote® app, allowing users to monitor and control compatible heater functions from a connected device. Its smart ecosystem manager can help manage heater operation, scheduling, and connected equipment when properly configured.

Built with polymer headers, a copper heat exchanger, Low NOx combustion, and a compact equipment-pad-friendly footprint, the Raypak 018033 AVIA heater delivers strong heating performance in a modern, service-friendly package.

Ideal For

• Residential inground pools
• Pool and spa combination systems
• Natural gas pool heating systems
• Fast spa heat-up applications
• Pools requiring up to 399,000 BTU heating capacity
• Customers wanting built-in Wi-Fi heater control
• Raymote app-based pool temperature control
• Equipment pads with limited space
• Replacing older natural gas pool heaters
• Professional pool heater installations

Key Features

• 399,000 BTU input — delivers powerful heating performance for pools and spas.
• Natural gas operation — designed for properties with properly sized natural gas service.
• Built-in Wi-Fi — enables smart connected control without requiring a separate heater control panel.
• Raymote app compatibility — allows remote temperature control, alerts, and system monitoring when properly configured.
• Low NOx certified design — engineered for reduced emissions and cleaner combustion.
• Copper heat exchanger — provides efficient heat transfer for fast water heating.
• Polymer headers — durable, corrosion-resistant header design for pool heater applications.
• ProTek Shield included — helps protect the heat exchanger and extend heater life in properly maintained water.
• Smart ecosystem manager — supports connected control of compatible heater, pump, water feature, and scheduling functions.
• Compact 2' x 2' footprint — fits easily on many standard equipment pads.
• Lightweight cabinet design — approximately 135 lb for easier professional handling and placement.
• Digital control interface — user-friendly operation with temperature adjustment and diagnostic support.

Benefits

The Raypak AVIA 018033 gives pool owners a modern heating solution that combines powerful gas heating with connected smart control. Its 399K BTU capacity helps heat pools and spas quickly, while the built-in Wi-Fi and Raymote app make it easier to manage water temperature from a connected device.

The compact AVIA footprint makes it an excellent choice for replacement installations where space is limited. The Low NOx burner system supports cleaner operation, while the copper heat exchanger delivers efficient heat transfer.

For pool professionals, the AVIA’s service-friendly design, smart diagnostics, polymer headers, and ProTek Shield help support reliable installation, maintenance, and long-term operation.

Specifications

Included Components

• 1 × Raypak AVIA P-R404A-EN-C natural gas pool and spa heater
• Built-in Wi-Fi / Raymote-compatible digital control system
• Copper heat exchanger
• Polymer header assembly
• ProTek Shield
• Electronic ignition system
• Manufacturer-supplied installation documentation

Gas line materials, shutoff valve, electrical wiring, bonding components, venting components, plumbing valves, check valves, equipment pad materials, automation wiring, and installation labor are sold separately unless specifically included by the supplier.

Installation Notes

This heater should be installed by a qualified pool professional, licensed gas technician, or licensed contractor as required by local code. Proper installation requires correct natural gas supply sizing, electrical wiring, bonding, grounding, plumbing layout, water flow verification, combustion air, Wi-Fi setup, and venting where required.

Before installation, confirm the fuel type is natural gas, the gas supply can support a 399,000 BTU heater, and the equipment pad has adequate clearance and service access. For indoor or enclosed installations, approved venting and combustion air requirements must be followed.

Water chemistry must be maintained within recommended ranges to protect the copper heat exchanger, ProTek Shield, and connected pool equipment.

Customer-Facing Q&A

Q: What is the Raypak 018033?
A: It is a Raypak AVIA P-R404A-EN-C Low NOx natural gas pool and spa heater rated at 399,000 BTU.

Q: What is the SKU?
A: The SKU is 018033.

Q: What is the UPC?
A: The UPC is 840891047292.

Q: What is the model number?
A: The model number is P-R404A-EN-C.

Q: What fuel type does this heater use?
A: This model uses natural gas.

Q: How many BTUs is this heater?
A: It is rated at 399,000 BTU input.

Q: Does this heater have built-in Wi-Fi?
A: Yes. AVIA includes built-in Wi-Fi and supports Raymote app control when properly configured.

Q: What app does this heater use?
A: It works with the Raymote app for compatible connected control and monitoring.

Q: What heat exchanger does this heater use?
A: This model uses a copper heat exchanger.

Q: What type of headers does it have?
A: It has polymer headers.

Q: What is the gas connection size?
A: The gas connection is 3/4" NPT.

Q: What size water connections does it use?
A: It uses 2" buttress water connections.

Q: Is this a Low NOx heater?
A: Yes. This AVIA heater is Low NOx certified.

Q: Is this a propane heater?
A: No. This model is natural gas. Propane versions use different model numbers.

Q: Should this heater be professionally installed?
A: Yes. Professional installation is strongly recommended because this heater requires proper gas, electrical, plumbing, venting, bonding, and startup setup.