Find your parts diagram
Sticker on the pump body (the part with the basket), not on the motor. Motor labels from Century, A.O. Smith or Regal won't match parts.
Label on the side of the tank near the base. Size is in sq ft, e.g. 420 sq ft = C4030 or CCP420.
Rating plate inside the front access panel. Note the BTU and gas type (NG or LP).
Molded into the body or printed on top. Robotic cleaners: on the power supply.
Still not sure? Call (818) 818-6559 and we'll find it for you.
The Raypak Avia HD 404 Low NOx Pool and Spa Heater (Model 018045) is a high-performance natural gas unit engineered for efficient heating in both residential and commercial pool systems. With a 399,000 BTU/h input and 84% thermal efficiency, it delivers consistent and rapid water heating. Its advanced NiTek heat exchanger technology offers 300% greater erosion resistance than copper and 200% more than cupronickel, ensuring long-term durability. Designed for flexible installation, the unit is compatible with both indoor and outdoor setups and Category I & III venting. Wi-Fi integration via Raymote™ allows remote control and monitoring, while its 135 lb frame supports flows up to 125 GPM on standard 120/240VAC power.
Raypak Avia HD 404A Low Nox Features
Industry-First Technology
Managing your pool heater has never been easier or smarter. AVIA is built with an innovative Wi-Fi enabled control system that allows you to manage your pool heater with one accessory through the Raymote app – so no need for a separate control panel to manage your pool heater.
With Raypak’s industry-first technology, NiTek, this AVIA HD is 300% more erosion resistant than copper, and 200% more than cupronickel.

THE POWER TO KNOW
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Integrated Wi-Fi
Provides a smart connection for real-time service alerts and control from anywhere.
THE POWER TO CONTROL
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Raymote Temperature and Heater Control
Raymote Mobile App allows you on-the-go control of your pool temperature and so much more.
THE POWER TO PROTECT
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ProTek Shield™
Is a cutting-edge module that protects the heat exchanger from corrosion, prolonging the life of the AVIA pool heater.

Specifications
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900% more nickel
Compared to cupronickel in critical surfaces -
Longevity
NiTek reduces more than 50% scale formation -
Max Efficiency
NiTek Produces up to 2% more thermal efficiency than cupronickel, and the same thermal efficiency as copper -
Superior Strength
300% more erosion resistant than copper
200% more than cupronickel
Key Features
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Smart Automation
Smart pool control automation system built right into the heater. -
Smart Scheduling
AVIA heats and learns the size of your pool. -
Smart Ecosystem Manager
Manage your heater, pump or water feature. -
Integrated Wi-Fi
Smart connection for real-time service alerts. -
ProTek Shield™
Protects the heat exchanger from corrosion.

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Raymote™ Temperature & Heater Control
On-the-go control of your pool temperature. -
Small & Easy to Install
AVIA weighs 135 pounds. -
Installation Versatility
Can be rotated on 3 sides with flexible connections. -
Serviceability
Most serviceable heat exchanger in the market. -
Efficiency
84% efficiency rating and is low NOx certified.
Highlights
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High Output Efficiency: 399,000 BTU/h input and 84% efficiency for reliable heating performance
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Durable NiTek Exchanger: Outperforms copper and cupronickel with superior erosion resistance
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Smart Wi-Fi Control: Raymote™ system enables remote access and operation
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Flexible Installation Options: Supports indoor/outdoor use with compatible venting systems
- Strong Flow Support: Handles up to 125 GPM, ideal for a variety of pool and spa setups
