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.
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018961F | Raypak Avia 404A Combustion Air Blower
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CA P65 Warning: Cancer and reproductive harm. www.p65warnings.ca.gov
The Raypak 018961F Combustion Air Blower Kit (also called “Blower Comb Air”) is an OEM replacement blower assembly for Raypak Avia 264A / 404A heaters. This kit ensures proper forced-air ventilation into the firebox to support safe combustion even under challenging venting conditions. By reliably feeding combustion air, it helps maintain flame stability, prevents flue gas recirculation, and keeps the heater operating efficiently and safely. The blower is designed to drop in easily where the original blower was mounted.
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OEM Combustion Air Blower: Factory-matched blower kit built to Raypak specifications to fit Avia 264A / 404A heater assemblies without major modifications.
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Ensures Forced-Air Combustion Support: Supplies a steady stream of combustion air into the firebox to maintain correct air-fuel ratio and prevent inefficient or unstable burning.
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Improves Heater Reliability: Addresses issues such as flame roll-out, ignition failure, or back-drafting by providing consistent airflow under varying ambient and venting conditions.
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Durable Construction for Harsh Conditions: Designed to endure high heat, vibration, and exposure to combustion gases over repeated start/stop cycles without early failure.
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Simple Retrofit & Replacement: Drop-in design means the blower kit can be installed via the same mounting and ducting points as the original, minimizing service time.
- Raypak Avia 404A Heater