Our Experts Are Ready
To Assist You

Whether you need quick answers or in-depth support, our experts are ready to assist you. Browse our knowledge base, explore helpful guides, or contact us directly for personalized assistance.

Wrong Size?

Let’s exchange it for the correct one here. Its free!

Looking for a Refund?
Let’s Get It Sorted

We understand that sometimes things don't go as planned. If you need a refund, we're here to make the process simple and stress-free. Start your request and we'll take care of the rest.

Get Refund

Received Damaged Filters?
Let’s Make It Right

Damage happens sometimes, and we’re here to help!
Contact us with the details, and we’ll get a replacement

Get Replacement

Order on the Way?
Find Out Your ETA Here

Want to know when your order will arrive? Simply reach out with your order number, and we'll provide you with the latest ETA and tracking information.

Get Support

Not Sure What Size You Need?
Let’s Find the Perfect Fit!

Not sure which size to pick? No worries! Just reach out to our support team, and we’ll help you choose the right size quickly and confidently.

Get Sizes

Interested in opening a COMMERCIAL ACCOUNT
or
looking for BULK DISCOUNTS?

Leave us a message here and one our Sales Reps will get back to you shortly.

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FAQs

  • To determine the size you need, check the existing filter in your unit. Look for the nominal size, usually in large print, and the actual size in small print on the frame. If you can’t find the size, use a tape measure to measure the length, width, and depth.

  • MERV (Minimum Efficiency Reporting Value) rates air filter effectiveness. Higher ratings indicate greater particle-trapping efficiency. Explore our MERV 8, 11, 13 and Carbon filters designed for different needs.

  • Furnace filters and AC filters are interchangeable terms for the same product, serving HVAC systems.

  • Pleated filters should be replaced every 90 days or more frequently if you have pets, children, or allergy sufferers. Regular replacements enhance air quality and HVAC performance.

  • We offer free shipping within the continental US for any order over $50 and accept returns within 90 days for any standard filter. Contact us for assistance with returns. Please be aware custom filters are not returnable.

  • Track your order via the shipping confirmation email, signing in your Filter King account or just give us a call.

What our commercial partners are saying.

Thomas K. – Joe Filter in Tempe, AZ

“Filter King’s service is amazing and has been very helpful. We had an issue box labeling, but they resolved this issue quickly. The customer service team is responsive and have been incredibly easy to communicate with.”

Thomas K. – Joe Filter in Tempe, AZ

May 9, 2025
Nathan R., Chadwell Supply

“You guys are awesome. The lead times and prices of the filters are very competitive. I only want to work with you.”

Nathan R., Chadwell Supply

May 9, 2025
William T., President, Alabama Industrial Supplies

“Really, all has been great! Service is excellent! Pricing and fixed shipping is tremendous! For a reseller like myself, it helps to have that pricing assurance.”

William T., President, Alabama Industrial Supplies

May 9, 2025

Have a Question?

Please send us your question and one of our helpful agents will respond promptly.

We can deliver to 90% of the country next day.