Pentair ETi 250 Air Intake Kit for Indoor Systems 476371 - Heater Parts - img-1

Pentair ETi 250 Air Intake Kit for Indoor Systems 476371 - Heater Parts - img-2

Pentair ETi 250 Air Intake Kit for Indoor Systems 476371 - Heater Parts - img-3

Not sure it fits? See this part on the interactive diagram ETi 250 Heater

Low stock - 7 items left
Inventory on the way

$84.94 Price

Instant Savings: $35.05

Questions about returns? View our return policy.

Quantity

Pentair ETi 250 Indoor Direct Air Intake Kit | 476371

Name: Pentair ETi 250 Indoor Direct Air Intake Kit | 476371
Brand: Pentair
SKU: 476371
Price: 84.94 USD
Availability: InStock

The Pentair ETi 250 Indoor Direct Air Intake Kit (476371) is an accessory designed for the Pentair ETi 250 Series Condensing Gas Heater. This kit allows your ETi 250 heater to safely draw combustion air directly from indoors when it’s installed in an enclosed or mechanical equipment room, rather than relying on outdoor air sources. It helps ensure proper combustion, efficient operation, and compliance with installation requirements for indoor applications.

What This Part Is For

This direct air intake kit is made for use with the Pentair ETi 250 Condensing Gas Heater when the heater is installed inside a utility room or enclosed space. It provides a dedicated pathway for combustion air from inside the building, helping maintain proper airflow and efficient combustion without pulling conditioned space air through unintended gaps.

Features & Benefits

Designed for indoor installations of ETi 250 condensing heaters
Provides a dedicated combustion air intake from inside the room
Helps ensure efficient and stable heater performance
Includes components engineered to match OEM specifications

Installation Notes

Follow Pentair’s installation instructions to maintain safe airflow and clearances
Ensure all ducting and intake connections are sealed to prevent back-drafting
Verify proper air supply before operating the heater
Work with a qualified technician for indoor HVAC combustion air installations

Maintenance Tips

Inspect the intake ducting periodically for blockage or debris buildup
Check seals and connections to prevent air leaks
Keep the mechanical room clear of obstructions that could interfere with airflow

Related Products

Pentair ETi 250 Condensing Gas Heater – The main heater model that this indoor direct air intake kit is designed to work with.
Pentair ETi 250 Condensate Neutralizer Replacement Kit (476375Z) – Kit to replace spent neutralizer media for condensate treatment.
Pentair ETi 250 Service Kit – Helpful maintenance and service components for the ETi 250 heater.
Pentair Gas Heater Anode Kit – Replacement anode kit for corrosion protection in gas heater systems.

Questions about returns? View our return policy.

Hours Of Operation:

Monday - Friday: 7:00 am to 5:00 pm Phoenix Time

Saturday: 8:00 am to 2:00 pm

Sunday: Closed

We do not ship on Saturday or Sunday.
Orders totaling more than $300 will require signature confirmation upon delivery.
We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
Expedited shipping options are available at checkout.

Return Policy:

Products that are received damaged will receive a refund in store credit.
Most products are eligible for return within 30 days of receipt, except where noted below.
To initiate a return, please complete an RMA form prior to sending your item back.
Original shipping costs are non-refundable and will be deducted from the return credit.
Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
Some returns will be charged an automatic 15% restocking fee.
We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
Please complete the return form to receive your RMA number and return shipping label.
Chemical products are not eligible for return under any circumstances.
The Pentair Colorsync 618031 is not eligible for return.
Pool cleaners are not eligible for return.
Opened seals and o-rings are not eligible for return.
Capacitors are not eligible for return.
Plastic popup tools are not eligible for return.
Automation components and circuit boards are not eligible for return.
If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.