FILTERHOME FIT PROMISE

Custom Air Filter Return & Exchange Policy

Custom air filters are made specifically to the measurements you provide. If your custom filter doesn't fit, don't worry — we'll help make it right.

Last updated: August 9, 2026

Easy Returns & Exchanges

Doesn't fit? We'll exchange it for free.

Our Custom Filter Fit Promise

We want ordering a custom HVAC filter to feel simple and low-risk. If the custom filter you ordered does not fit your HVAC system, contact FilterHome within 30 days of delivery.

We will provide free fit exchanges for the affected custom filter and manufacture a replacement using your corrected measurements.

Your replacement filter will be shipped using standard shipping at no additional charge.

What Qualifies for a Free Fit Exchange?

A custom filter may qualify for our free fit exchange when:

  • The custom filter does not properly fit your HVAC filter opening.
  • You contact us within 30 days of receiving the order.
  • The filter has only been test-fitted and has not been used in an operating HVAC system.
  • You provide the corrected measurements needed to manufacture the replacement.

The free fit exchange applies to correcting the dimensions of the original custom filter. Changes to filtration level, quantity, or other product selections may require payment of any applicable price difference.

How to Request an Exchange

If your filter doesn't fit, contact us and we'll walk you through it. Please include:

1
Your order number

Include the order number from your FilterHome confirmation email.

2
A quick photo

Send a photo showing the filter and, when helpful, the area where it needs to fit.

3
Your corrected measurements

Provide the exact width, length, and depth you need for the replacement filter.

Contact FilterHome

Damaged, Defective, or Incorrect Filters

If your order arrives damaged, defective, or different from the specifications you ordered, contact us as soon as possible.

We'll review the issue and make it right, which may include a replacement or refund where appropriate.

Refunds on Custom-Made Air Filters

Because custom air filters are manufactured specifically to the measurements selected for your order, they generally cannot be restocked or resold.

For that reason, custom filters are generally not eligible for a refund due to a change of mind or an incorrect customer measurement. Instead, sizing issues are handled through our free fit exchange described above.

This does not limit any rights or remedies that may be required by applicable law.

Order Changes & Cancellations

Need to change a measurement or cancel your custom-filter order? Contact us as quickly as possible.

We may be able to modify or cancel the order if manufacturing has not yet begun. Once production has started, custom orders may no longer be eligible for cancellation.

Standard Air Filters

This page applies specifically to custom-made FilterHome air filters. Return terms for standard-size products may be different.

For other products, please review our general Return & Refund Policy.

COMMON QUESTIONS

Custom Filter Exchange FAQ

What if my custom air filter doesn't fit?

Contact FilterHome within 30 days of delivery. If your order qualifies, we'll make one replacement using your corrected measurements and ship it at no additional charge.

What if I measured the filter incorrectly?

Measurement mistakes can happen. Our Fit Promise allows one free fit exchange for an eligible custom filter so we can remake it using the corrected measurements.

Do I have to pay for the replacement filter?

An eligible fit exchange includes one corrected replacement filter at no additional product charge, along with standard shipping for the replacement.

Can I return a custom filter for a refund?

Because custom filters are manufactured to the measurements selected for your order, they generally aren't refundable for measurement errors or a change of mind. Fit problems are handled through our Fit Promise.

Can I exchange a used air filter?

The Fit Promise is intended for filters that have been test-fitted but not used in an operating HVAC system.

NOT SURE ABOUT YOUR SIZE?

We're happy to help before you order.

If you're unsure about your measurements, contact FilterHome and we'll help you determine the right custom filter size.

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