Shop Furnace and AC Filters - Trusted in Filtration 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 15+ years and is a preferred online retailer for AAF Flanders Furnace and AC Filters. We sell filters by the case or individual filters with our subscription program.

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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Reasons Why Your Heating Bill Is High

Reasons Why Your Heating Bill Is High

Are you paying too much for gas or electric in the winter and not even feeling toasty for your trouble? Look over these reasons why your heating bill is high.
What To Know About Washable Filters

What To Know About Washable Filters

Washable furnace filters provide an alternative to disposable models, which could pay off for your family. Learn whether going washable is right for you.
Questions To Ask Before Residential HVAC Unit Installation

Questions To Ask Before Residential HVAC Unit Installation

Installing a new HVAC system is no small feat. Get educated on the subject of HVAC so that you can shop effectively and affordably before installation day.