Pentair ETI-400 Indoor Air Intake Kit | 475971
Pentair
SKU: 475971
Pentair ETI-400 Indoor Air Intake Kit | 475971
The Pentair ETI-400 Indoor Air Intake Kit (475971) is an accessory designed specifically for the Pentair ETI-400 Condensing Gas Heater. This kit allows the heater to safely draw combustion air from an indoor mechanical room or equipment space when outdoor air access isn’t ideal or available, helping ensure proper combustion and efficient operation in enclosed installations.
What This Part Is For
This indoor air intake kit is intended for use with the Pentair ETI-400 Condensing Gas Heater when installed inside utility rooms, garages, or other enclosed areas where direct outdoor air intake is not feasible. It provides a dedicated pathway for combustion air from within the space while maintaining safe clearances and airflow required by the heater’s design.
Features & Benefits
- Designed for indoor installations of the Pentair ETI-400 condensing heater
- Allows combustion air to be drawn from a mechanical room or enclosed space
- Helps maintain optimal combustion performance when outdoor intake is restricted
- Includes components engineered to match OEM specifications for fit and function
Installation Notes
- Follow manufacturer instructions to maintain required clearances and proper airflow
- Seal all intake connections to prevent back-drafting and ensure safe combustion
- Verify that the heater has adequate air supply before operation
- Work with a qualified HVAC or gas professional for proper indoor combustion air setup
Maintenance Tips
- Periodically inspect intake ducting for obstruction or debris buildup
- Check seals and connections to prevent air leaks
- Keep surrounding areas clear of obstructions to support proper airflow
Related Products
- Pentair ETI-400 Condensing Gas Heater – The main heater model that this indoor air intake kit is designed to work with.
- Pentair ETI400 Condensate Neutralizer Replacement Kit – Replacement kit for treating acidic condensate before drain discharge.
- Pentair ETI400 Stack Flue Sensor Replacement Kit (475601) – Replacement flue sensor part to help maintain safe combustion monitoring.
- Pentair ETI400 Service Kit – General maintenance kit with common service parts for the ETI400 heater.
Questions about returns? View our return policy.
Hours Of Operation:
Monday - Friday: 8:00 am to 4:00 pm Phoenix Time
Saturday and Sunday: Closed
- Orders costing more than $300 WILL be required to have signature confirmation upon delivery.
- Handling time is typically only 1 day.
- Any item ordered after 1pm Phoenix time, may not ship same-day.
- Call us if you require expedited shipping and we can give you quotes based on your needs.
Return Policy:
- All products, except as noted below, are eligible for return up to 30 days after receipt of item.
- For returns, an RMA form must be filled out HERE or customers can call for additional help.
- Shipping costs will be deducted from all returned items.
- Any item that is missing accessories, original packaging, or is not returned in the same condition that it was received in, may be subject to a re-stocking fee up to 100% based on the condition we receive it in.
- Items broken, damaged, or inoperable due to installer error will not be refunded.
- Fill out the return form or give us a call to obtain an RMA and return shipping label.
- There are no returns on the Pentair Colorsync 618031
- No returns on pool cleaners.
- No returns on opened seals and o-rings.
- No returns on capacitors.
- If a light is returned because it "doesn't work" and it tests fine, the cost to ship and a re-stocking fee will be deducted from the refund.
- All products denied upon arrival at customers house WILL be charged the cost to ship.
- Visa Gift Card Promotions: Gift cards are sent within 14 days of the order. When accepting the Visa Gift card, you agree that if your order is returned or refunded, this amount will be deducted from the refunded amount. All Visa Gift cards are sent via email in an E-Gift Card format and are non refundable.
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