Furnace, AC and HVAC Replacement Air Filters

Every standard size HVAC, AC and Furnace Filter, including custom and odd size filters. Trusted air quality brands; Exact Filters®, AAF FlandersEZ-Flow and NaturalAire Furnace and AC Filters. Filters sold by the case or individual filters with a subscription.

Residential and Commercial Filters

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Maximize Airflow and Energy Efficiency

If you're looking to protect your system and maximize airflow in your commercial or residential system EZ Flow filters made by AAF Flanders are a great option.

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Pleated Filters to Improve IAQ (Indoor Air Quality)

Pleated filters are better at improving your indoor air quality compared to a basic fiberglass style filter. They’re one of the most popular styles available today.

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Furnace and AC Filters

The terms furnace filter and air conditioner (AC) filter. Are there really two different filters for the heating, ventilation, and air conditioning (HVAC) system in your home, or are they referring to the same filter? The answer—they are the same! Often times it depends on what part of the county you are in for the term you hear more often.

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Improving Indoor Air Since 2006

Over 17 years RTF has been a trusted retailer for leading brands in the indoor air filtration industry. Serving commercial and residential customers in every state in the United States and province in Canada. Members of ASHRAE, IAQA and NAFA. We strive to provide the best service and air filtration products for our valued customers.

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NaturalAire Filters

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Improve Air In Your Home or Business

Poor indoor air quality can cause or contribute to the development of infections, lung cancer and chronic lung diseases such as asthma. People who already have lung disease are at greater risk. High quality filters with a MERV rating can help you achieve your air quality goals.

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High Quality Filters Improve Air Quality

While it's easy to see when you need to dust or sweep, it's harder to know when the air in your home or business needs cleaning. In fact, the indoor air you breathe can be hazardous to your health without any telltale signs. Indoor air can be even more polluted than the air outdoors. Trust your air to filters made by trusted manufacturers.

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AAF Flanders Filters - The world’s largest manufacturer of air filtration solutions

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Exact Filters | The Perfect Fit Replacement Air Filter

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Filter Subscriptions - Save 20% With Auto-Delivery!

You choose the delivery interval that works best for your needs. Order today and never have to worry about your filter again. These AC and furnace filter options offer the most convenient way to keep up with regular filter replacement. No commitment. Cancel at anytime. Always free shipping!

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Live and Breathe the Cleanest Air

Did you know basic filters should be replaced every 30 days and pleated filters every 90? Do you remember the last time you changed your filter? If you don’t that’s okay—we’re here to help you remember. It’s in our name.

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Business and Wholesale Accounts

If you purchase filters in bulk you're a good candidate for a wholesale account that gives you special access to our commercial pricing website. B2B accounts are great for independent hardware stores, commercial properties, school districts, hospitality, HVAC contractors and more.

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Perfect Fit Filters

Find Your Perfect Fit

RTF provides HVAC and furnace filters for residential and commercial properties. Authorized online retailer for trusted air quality brands like Exact Filters®, AAF FlandersEZ-Flow, and NaturalAire Furnace and AC Filters. We sell filters by the case or individual filters with our subscription program.

Order Custom Size Air Filters