Shop Furnace and AC Filters - Trusted Filtration Retailer Since 2006

Over a million filters sold and replaced. That’s billions of particles removed from indoor air. Trust your air to us. RTF has been In business for 14+ years and is a preferred online retailer for AAF Flanders Furnace and AC Filters

Quality Furnace and AC Filters Online

What’s your need? Commercial? Residential? Industrial? HEPA? We have you covered! At RememberTheFilter.com, you’ll find the perfect HVAC filter online for your system. Our stock features leading manufacturers!

Buying furnace and AC filters online at RememberTheFilter.com is easy, convenient, and saves you time and money. No high-pressure sales. No time-consuming service appointments. No searching for weeks or months for your filter size. Just friendly, knowledgeable filter experts dedicated to helping you select the right filters for your system.

With thousands of sizes to choose from, you’ll never have to search for your filter again! You can even buy custom furnace and AC filters online! We’ll send you perfect fit filters for your HVAC system. We deliver filters to you for free, too! Whether you live here with us in the Pacific Northwest, or you’re in Texas, Chicago, New York, Los Angeles, or Florida, we deliver for free anywhere in the entire contiguous United States – even oversized or special order filters.

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The Differences Between Fiberglass and Pleated Air Filters

The Differences Between Fiberglass and Pleated Air Filters

As you shop for air filters, all the options may overwhelm you. To help you choose, here are the differences between fiberglass and pleated air filters.
ExactFilters the Perfect Fit

ExactFilters the Perfect Fit

ExactFilters in your exact size. Finding the perfect fit filter isn't always easy so we teamed up with AAF Flanders to offer high quality exact fit...
How Often You Should Replace Your Furnace Filter

How Often You Should Replace Your Furnace Filter

Home’s require a lot of maintenance, and an important part of home maintenance is changing out the furnace filters. People tend to forget about thi...