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Replacement filter, large

Replacement filter

Repl, retainer, filter-e1

Repl, filter, air disp 16x20

Repl, filter-26.5" x 16 .188"

Panel air filter 18x18x1

Filter, cmf95
Your Nordyne furnace works hard to keep your home warm, but a clogged air filter forces it to work harder and run less efficiently. A dirty filter restricts airflow, which can trigger pressure switches, strain the blower motor, and let dust accumulate on key parts like the heat exchanger and flame sensor. Replacing your furnace filter every 1 to 3 months (depending on household dust and pets) is the simplest maintenance task and one that pays back immediately in better heating performance and lower energy bills.
Nordyne furnaces — including Intertherm, Miller, Gibson, and Tappan models — use standard 1-inch and 5-inch pleated filters in common sizes like 16×25×1, 20×25×1, 16×25×5, and 20×25×5. Electrostatic reusable filters are also available if you prefer a washable option. Check your current filter for size and MERV rating before ordering to ensure the exact fit.
Most Nordyne furnaces (Intertherm, Miller, Gibson, Tappan models) use standard 1-inch or 5-inch pleated filters in common residential sizes like 16×25, 20×25, or 25×25. The easiest way to confirm is to look at your current filter — the size is printed on the frame. If you don't have your old filter handy, enter your Nordyne model number on Repair Clinic to see the exact filter dimensions and MERV rating your furnace requires.
Replace your furnace filter every 1 to 3 months, depending on household conditions. If you have pets, allergies, or live in a dusty area, replace monthly. In cleaner homes with no pets, every 3 months is fine. A clogged filter forces your furnace to work harder, wastes energy, and can trigger false pressure switch trips. If you notice weak heat or hear the blower struggling, a dirty filter is often the culprit.
Yes, as long as the size and MERV rating match. You don't need a Nordyne-branded filter — any 16×25×1 or 20×25×5 pleated filter with a compatible MERV rating (typically MERV 8 to 13 for residential) will work. But verify your exact furnace model on Repair Clinic to confirm the dimensions and any airflow restrictions your model has, since some Nordyne furnaces are sensitive to higher MERV ratings.
MERV stands for Minimum Efficiency Reporting Value — a rating of how well the filter traps particles. MERV 8 is standard for most homes; MERV 11 to 13 is better for allergies and pet dander. Higher MERV ratings restrict airflow slightly, which can stress older furnace motors. If you have an older Intertherm or Miller furnace, stick to MERV 8 to 11 to avoid pressure drop issues. Enter your model number to see the recommended MERV range.


Shopping for Nordyne furnace air filters Use your model number to get the right part. Easily locate the right filter using your furnace's model number to ensure a proper fit and reliable operation. Our no-hassle 365-day return policy allows you to return uninstalled filters for any reason within a year of purchase, supported by model-number lookup and return options. Plus, our price match guarantee ensures you won't overpay for your replacement parts. With same-day shipping available, you can have your Nordyne furnace running efficiently in no time. Remember to regularly replace your air filter every 1-3 months to maintain indoor air quality and protect your furnace from dust and allergens. Count on Repair Clinic for all your Nordyne furnace part needs and enjoy the support of our online repair library with guides, videos, and part diagrams.
Nordyne prints the model number on a data plate inside the blower compartment door of most furnaces. Turn off power to the furnace, remove the access panel, and look for a label listing the model and serial numbers. Depending on the cabinet design, the label may also be inside the front access panel or near the gas valve. Enter the complete model number in the Repair Clinic search bar to narrow the catalog to parts that fit your entire furnace, not just the filter or another individual part. Use it in the model number search to pull up the parts matched to your unit. That means fewer wrong orders and a faster repair.

Regular filter replacement is one of the simplest ways to keep your Nordyne Furnace running efficiently. Repair Clinic stocks OEM filters for a wide range of appliances, ready to ship, along with installation videos and part diagrams. Use the model number lookup to confirm the exact filter for your unit, then order a few to keep on hand for scheduled service intervals.

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