The 4" MERV 8 Furnace & AC Air Filter by Filters Fast® - 3-Pack is a set of MERV 8 filters that effectively reduces contaminants from your indoor air. Removing these airborne particles can help improve allergies and alleviate sinus irritation that can cause watery eyes, itchy throat, coughing, and sneezing. The MERV 8 filter media is electrostatically charged and constructed with spun micro-fiber that also will not retain moisture, which can lead to microbial growth. Aside from the health benefits, these HVAC filters will also extend the life of your heating and cooling system by making it work more efficiently.
Note: These filters do not contain fiberglass.
Specifications:
- Brand: Filters Fast®
- Part Number: FF4M8
- Pack Size: 3
- Filter Life: 6 - 12 Months
- MERV Rating: 8
- Filter Type: Electrostatic pleated
- Material: Synthetic
- For commercial and residential use
Available Sizes:
The 4" MERV 8 Furnace & AC Air Filter by Filters Fast® is available in the following sizes:
| Nominal Size | Actual Size | Alternate Part Number |
|---|---|---|
| 12x24x4 Air Filter | 11.375x23.375x3.625 | PF8.0412243PFF |
| 16x20x4 Air Filter | 15.375x19.375x3.625 | PF8.0416203PFF |
| 16x25x4 Air Filter | 15.375x24.375x3.625 | PF8.0416253PFF |
| 18x24x4 Air Filter | 17.375x23.375x3.625 | PF8.0418243PFF |
| 20x20x4 Air Filter | 19.375x19.375x3.625 | PF8.0420203PFF |
| 20x24x4 Air Filter | 19.375x23.375x3.625 | PF8.0420243PFF |
| 20x25x4 Air Filter | 19.5x24.5x3.625 | PF8.0420253PFF |
| 24x24x4 Air Filter | 23.375x23.375x3.625 | PF8.0424243PFF |
| 25x29x4 Air Filter | 24.375x28.375x3.625 | PF8.0425293PFF |
Custom Sizes:
- If you don' t see your size, order a custom made air filter! Custom made air filters do not come individually wrapped.
How do you install the 4" MERV 8 Furnace & AC Air Filter by Filters Fast®?
- Once your air filters arrive, gather your supplies including a ladder (if needed,) safety goggles, gloves, a mask, and a disposable bag.
- Remove the metal grate from your air return.
- Carefully remove the used air filter and place it immediately and gently into the disposable bag. Then tie the bag sealed.
- Place the new air filter in place of the filter you just removed and replace the metal grille.
How often should you replace the 4" MERV 8 Furnace & AC Air Filter by Filters Fast®?
- Changing your 4" MERV 8 Furnace & AC Air Filter by Filters Fast® is a very quick and easy process that should be done once every six to twelve months.
What contaminants does the 4" MERV 8 Furnace & AC Air Filter by Filters Fast® reduce?
-
The 4" MERV 8 Furnace & AC Air Filter by Filters Fast® is a MERV 8 air filter, which means that it reduces the following contaminants:
- Dust
- Pollen
- Mold Spores
- Other Common Airborne Allergens
Compatible Parts:
The 4" MERV 8 Furnace & AC Air Filter by Filters Fast® - 3-Pack is the correct replacement for the following part numbers:
Compatible Models:
The 4" MERV 8 Furnace & AC Air Filter by Filters Fast® - 3-Pack is correct replacement for the following model numbers:
Customer Reviews:
These are the best AC filters. My AC man highly recommend them .
Collected by Trustpilot.comWell manufactured product.
Collected by Trustpilot.comAlthough the purchased size was identical to other brands (20 x 20 x 4), the actual size of the filter was about a 1/4 to 1/2 inch smaller in all directions. It seems misleading to round up the size in the advertising. There is a gap around the filter that will allow a small bit of unfiltered air to pass through to the HVAC and reduce the effectiveness of the filter. I will use these up, but will not be buying them again. It's too bad because the filter itself and construction seem decent, but the skimped size makes it not worthwhile or effective.
Collected by Trustpilot.comIt arrived on time and in good condition and fit our furnace.
Collected by Trustpilot.comTried to save some money by buying the generic “Filters Fast” brand 20”x25”x4” filter to replace my Honeywell filter, also 20” x 25” x 4”, and it’s the wrong size! Don’t market it as a replacement product if it’s not equivalent!!! How was I supposed to know the actual dimensions were different than the size advertised? The actual size is not listed when you're viewing the product. Very disappointed.
Collected by Trustpilot.comThese are exactly the same filters that the local HVAC company sells for 2x-3x the price. Also less expensive than the local HVAC supply company.
Collected by Trustpilot.comWrong size.
Collected by Trustpilot.comGood pricing, good product, fast shipping.
Collected by Trustpilot.comThey fit well and do the job fine.
Collected by Trustpilot.comI never ordered it to come so soon! I still have plenty. If you have me down as a subscriber, please take me off your lists.
Collected by Trustpilot.comThe filters are a good price and arrived quickly.
Collected by Trustpilot.comGreat value, swift delivery.
Collected by Trustpilot.comexact fit and good price
Collected by Trustpilot.comEasy to order!
Collected by Trustpilot.comThe filter do a great job. Keep the dust levels low.
Collected by Trustpilot.comgood value.
Collected by Trustpilot.comThey fit perfectly and fast service
Collected by Trustpilot.comWould be better if the cost was reduced
Collected by Trustpilot.comGreat product. Exactly like the ones I used to buy at the HVAC supplier but a heck of a lot cheaper.
Collected by Trustpilot.comThey were exactly like the ones I buy in town, but I didn't have to go out
Collected by Trustpilot.comAsk Our Product Experts
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