4 Inch Air Filters & Whole House Filters
92 products
Replace Your 4 Inch Air Filters for Less
Freshen the air in your home or office with our 4 inch air filters. With standard, hard-to-find, and custom sizes available, we know you'll find exactly what you need to improve your air quality. As you increase the MERV rating of your 4 inch furnace filter, the filtration efficiency also increases. Choose the rating that is right for you and best accommodates your individual needs or preferences. Whether you're replacing your 4 inch filter or simply need a customized filter, Air Filters Delivered is here to help.
Our 4 inch filters offer the following features:
- A Variety of Sizes, Including Standard 14x4 Air Filters & Custom Options
- Superior, Made-in-the-USA Quality
- Lower Price than You'll Find Anywhere Else
- 4 MERV Ratings for Enhanced Filtration Efficiency
- 4" Air Filters That Can Reduce Your Energy Costs By Up To 15%
Best 4 Inch Thick AC & Furnace Filters
Do you suffer from allergies or have pets? If so, consider upgrading to a MERV 11 or MERV 13 air filter. These higher quality filters are better at trapping various allergens, pet dander, and other household pollutants and irritants.
Our Aerostar filters are made in the USA with high quality materials and will work with any brand of HVAC, furnace, or ac unit. Whether you need a filter to fit a popular brand, like Aprilaire or Trane, or you want something generic but efficient, we've got you covered.
Consider joining our Subscribe and Save Program and never worry about having a clean air filter again. Members get 8% off every auto-shipped order! We make it easy to shop by different AC filter sizes including: 2 Inch Air Filters, 3 Inch Air Filters, 4 Inch Air Filters, 5 Inch Air Filters, and 6 Inch Air Filters.
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Is a 4 inch air filter the right size for my HVAC system?
4 Inch air filters have a larger and thicker surface area, equipping them to catch more pollutants.
Along with a larger filter, comes a higher Minimum Efficiency Reporting Value (MERV) rating. You can only use a 4 inch air filter though if your HVAC system is compatible with one. Check the measurements of your HVAC systems air filter by checking the sides of your current air filter or referring to the owner’s manual. We offer standard, hard-to-find, and custom air filter sizes and the freedom to choose the rating that’s best for you.
All of our air filters are made in the USA and delivered to you at an affordable price. To save even more, subscribe and get your air filters delivered regularly without even thinking about it.
How to know if it’s time to replace my air filter
Dirty air filters are visible if you look for them, but on the day-to-day, changing your air filter is usually not top of mind.
The frequency you should change your air filter can vary depending on factors such as location, household, lifestyle, and so forth.
A broad recommendation is to change your air filter every 90 days or 3 months, however, some may recommend changing sooner or later. The reality is, you can’t go wrong with maintaining a clean air filter.
If you change it too frequently the air you breathe will be cleaner and your HVAC system can run more efficiently.
By subscribing for air filters, you can get on a routine without though, taking advantage of the opportunity to change your air filter.
Our subscription based air filter delivery system can save you the time and hassle of visiting the store for a new air filter, or simply procrastinating on the thought of ordering a new air filter.
Enjoy the fresh air and let us bring your new air filters right to your door.
Is a 4 inch air filter the right size for my HVAC system?
4 Inch air filters have a larger and thicker surface area, equipping them to catch more pollutants.
Along with a larger filter, comes a higher Minimum Efficiency Reporting Value (MERV) rating.
You can only use a 4 inch air filter though if your HVAC system is compatible with one. Check the measurements of your HVAC systems air filter by checking the sides of your current air filter or referring to the owner’s manual.
We offer standard, hard-to-find, and custom air filter sizes and the freedom to choose the rating that’s best for you. All of our air filters are made in the USA and delivered to you at an affordable price.
To save even more, subscribe and get your air filters delivered regularly without even thinking about it.
How to know if it’s time to replace my air filter?
Dirty air filters are visible if you look for them, but on the day-to-day, changing your air filter is usually not top of mind.
The frequency you should change your air filter can vary depending on factors such as location, household, lifestyle, and so forth.
A broad recommendation is to change your air filter every 90 days or 3 months, however, some may recommend changing sooner or later.
The reality is, you can’t go wrong with maintaining a clean air filter. If you change it too frequently the air you breathe will be cleaner and your HVAC system can run more efficiently. By subscribing for air filters, you can get on a routine without though, taking advantage of the opportunity to change your air filter.
Our subscription based air filter delivery system can save you the time and hassle of visiting the store for a new air filter, or simply procrastinating on the thought of ordering a new air filter.
Enjoy the fresh air and let us bring your new air filters right to your door.