The Performance Promise

What we promise

Every Ironside filter is built to a specification. If it doesn't perform to that specification, we replace it or refund you. No paperwork, no inspection fee, no runaround.

The 90-Day Performance Guarantee

When you install an Ironside filter, it should:

  • Capture the percentage of airborne particulate listed on the product page (95–99% depending on MERV rating, per ASHRAE 52.2 testing)
  • Hold its shape and seal in any standard return-air slot
  • Last the full replacement interval stated for its MERV rating under normal residential conditions

If any of those three fails inside the first 90 days of installation, email support@getironside.com with your order number and a short description of what went wrong. We replace the filter at no cost and pay return shipping if we want the old one back for QA.

What's covered

  • Manufacturing defects (torn media, missing or loose wire backing, dimensional faults, separated frame)
  • Early collapse or premature loading not caused by abnormal home conditions (e.g., active construction dust, smoke, or pet over-population)
  • Filters that arrive damaged in transit
  • Wrong MERV or wrong size shipped by us

What's not covered

  • Normal wear after the replacement interval has passed
  • Damage caused by improper installation (folded media, undersized filter forced into a larger slot)
  • HVAC system damage of any kind — air filters are a consumable, not a system component (see Limitations below)
  • Custom or fractional sizes installed in a slot they were not measured for

A note on HVAC system damage

We hear this question every week, so here it is plainly: an air filter is the cheapest part of your HVAC system. It can extend the life of more expensive parts by trapping particulate before it reaches them, but no filter — Ironside or otherwise — can be held responsible for the failure of a blower motor, evaporator coil, or any other HVAC component.

If your system was already failing or undersized, a high-MERV filter can accelerate the failure by adding static pressure. That's why we ask about your system on the Find My Filter tool before recommending MERV 13+.

If you're unsure what your system can handle, talk to a licensed HVAC technician first, or email us with your model number and we'll point you to a safe MERV range.

How to file a warranty claim

  1. Email support@getironside.com with your order number and "Warranty claim" in the subject.
  2. Attach a clear photo of the issue.
  3. We respond within 1 business day with next steps.
  4. Approved claims are resolved (replacement shipped or refund issued) within 3 business days.

How this stacks with our Refund Policy

The Performance Promise covers product defects and performance failures. Standard returns (changed your mind, ordered the wrong size) are handled by our Refund Policy — 30 days, unused condition, customer pays return shipping.

Questions

Email support@getironside.com.