Product Overview

The Pentair Combustion Blower Replacement Kit for ETi 400 & ETi 250 Heaters | 476000 is the genuine Pentair OEM combustion blower used in Pentair ETi high-efficiency pool and spa gas heaters. The combustion blower supplies the air the burner needs to fire, so a worn, noisy or failed blower can stop the heater from igniting or cause air-pressure faults.

This kit is listed as part #38 in Pentair's replacement parts lists for both the ETi 400 and ETi 250 heaters. Replacing the blower with the factory part restores proper airflow and reliable combustion.

Ideal For

Pentair ETi 400 high-efficiency pool and spa heaters

Pentair ETi 250 high-efficiency pool and spa heaters

Heaters with a noisy, seized or failed combustion blower

Service technicians repairing ETi heaters

Natural gas and propane ETi heater models

Key Features

Genuine Pentair OEM replacement combustion blower kit

Fits Pentair ETi 400 and ETi 250 heaters

Part #38 on the ETi 400 and ETi 250 parts diagrams

Supplies combustion air to the burner for proper ignition

Restores factory airflow and heater performance

Benefits

Using the factory Pentair blower keeps your ETi heater operating as designed. Correct combustion airflow helps the heater light reliably, run efficiently and avoid air-pressure switch and ignition faults that come from a weak or failing blower. Replacing just the blower is a cost-effective repair compared to replacing the heater.

Specifications

Warranty & Compatibility

This kit fits Pentair ETi 400 and ETi 250 heaters only. Confirm your heater model on the rating plate before ordering. Gas heater repairs should be performed by a qualified service technician for safety and warranty compliance. Follow Pentair's blower replacement kit instructions during installation.

Customer-Facing Q&A

Q: What part number is this?
A: This is the Pentair combustion blower replacement kit, part number 476000.

Q: Which heaters does it fit?
A: It fits Pentair ETi 400 and ETi 250 high-efficiency pool and spa heaters.

Q: Is this a genuine Pentair part?
A: Yes. This is the genuine Pentair OEM replacement blower kit.

Q: How do I know if my blower needs replacing?
A: Common signs include loud or grinding blower noise, a blower that won't start, or repeated air-pressure or ignition faults. Have a technician confirm the diagnosis.

Q: Should this be professionally installed?
A: Yes. Gas heater service should be done by a qualified technician.