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How does it Work?

Custom Air Conditioner Filter Sizes

  1. Pick Your Filters
  2. Coose the Quality
  3. Tell Us How Often
  4. Start Service and Relax

Measure Twice, Order Once...And Done!

Does Your Home Have Non-Standard or Hard to Find AC Filters?

We can make air filters of any size, at increments as small as 1/8 of an inch. Forget about running around to hardware stores hoping that they carry your size and they have it in stock.  Since you're getting it from On Time Air Filters, sign up once and you're done.  We'll remember your sizes and ship them to you automatically, as often as you'd like.

If you don't see your filters in standard size lists (by filter thickness), check our "Custom Filters" list also.  We know that some builders (and A/C installers) prefer custom sizes so we've added many of them as an option in our checkout process.  If you still don't see them listed, don't worry. Just shoot us an e-mail and we'll take care of you right away.

Just Because It's Custom Doesn't Mean It Should Cost More

Air conditioner installers prefer custom size filters because they know you'll go back to them for replacements, at their high markups.  At On Time Air Filters, we never mark up our custom cut filters, and just like our standard sizes, shipping is always free.

Stay Away from Universal and Cut-to-Fit Filters

Properly sized filters are designed to fit snugly in your air handler and filter all of the air that passes into your air conditioner or furnace. If you're cut-to-fit finished product ends up with uneven, jagged edges, air is going to pass right through those holes - through the "path of least resistance."  That means that the dust, dirt and germs you're trying to keep from recirculating through your house are coming back through your ducts.

Our custom size filters are less expensive than most cut-to-fit products, without the hassle of the cutting or the fitting.  

Get Started

On Time Air Filters is a subscription service that delivers air conditioner filters to your home, automatically, as often as you want.

No need to remember to go to the hardware store, or hunt for hard-to-find filter sizes.

We make it easy to keep your air clean and energy costs LOW.
Satisfaction Guaranteed