Terms of sale

Last updated October 10, 2026

We're in preview. These terms take effect when we start taking real orders.

These terms cover buying Caliper air filters at caliperair.com. "We" and "Caliper" mean Caliper Air LLC, an Indiana limited liability company, based in New Albany, Indiana. By placing an order, you agree to them.

Orders and prices

Prices are in US dollars and shown before sales tax. We confirm every order by email. If we can't fill an order, or a price was listed by mistake, we'll tell you and refund anything you paid.

Payment

Payments are handled by Stripe. We never see or store your full card number.

Shipping

We ship to addresses in the United States. We show an estimated arrival date before you pay. Most orders ship within 1 business day for stock sizes and 2 for made-to-order sizes. Delivery dates from carriers are estimates, not promises. The filters are yours once they're delivered.

Sizes and fit

Filter sizes are nominal, meaning a 20×20×1 filter measures about 19.75 × 19.75 × 0.75 inches so it slides into the slot. We cut to within 1/16 inch of the actual size shown on each product page. If a filter doesn't fit, our fit guarantee covers you.

Choosing a filter

MERV ratings describe what each grade catches. Most home systems work well with MERV 8 to 13. If you're not sure your system can take a higher MERV filter, check with your HVAC manufacturer or technician.

Subscriptions

Subscribe and save orders renew automatically. The details are in our subscription terms.

Our responsibility

If something goes wrong with an order, the most we're responsible for is the amount you paid for it. Nothing in these terms limits rights you have under law that can't be waived.

The fine print

Indiana law governs these terms. If we change them, we'll post the new version here with a new date; changes don't apply to orders you've already placed.

Questions? Email hello@caliperair.com. Caliper Air LLC, an Indiana limited liability company, New Albany, Indiana.