AC & Furnace Filters

At All Filters, we make it easy to find the right filters for your air conditioner or furnace. Whether you need a standard or custom size that’s compatible with your system, our large selection of furnace and AC filters will ensure you find the ideal option. Choose from OEM branded filters or our more affordable alternative, SpiroPure, for the same fit and function. SpiroPure is available in Minimum Efficiency Reporting Value (MERV) 8, 10, 11, and 13. Plus, we stock furnace filters for geothermal, oil, propane, electric, and gas furnace air filter options.

Find Filters

Select the dimensions of your AC or furnace filter. *If you are looking for a 3”-6” thick whole house air cleaner filter replacement, please browse by brand below rather than using this search feature, as nominal dimension can differ depending on the filter brand.

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High-Quality Replacement Filters

We stock various filter types and sizes to fit different systems, ensuring you can find the right product that is compatible with your particular make and model. Our high-quality products are designed with advanced filtration technology that effectively captures airborne contaminants, improving indoor air quality. From basic dust filtration to high-performance allergen removal, the products at All Filters are available in a range of MERV ratings to balance efficiency and airflow.

Order AC & Furnace Filters Online

The team at All Filters is dedicated to customer support and helping you find air conditioner filters that are compatible with your model. If you’re unable to find your filter or need further assistance, don’t hesitate to call us or chat with us on Live Help. We offer free shipping on all orders over $99, along with special shipping offers for each product. Order online today and get the right filter delivered to your door quickly and conveniently.

MERV stands for Minimum Efficiency Reporting Values and is an industry-created standard that evaluates the efficiency of air filters. The MERV rating of any particular air filter ranges on a scale of 1 to 16, with a filter rating 1 being the least efficient and a filter rating 16 being the most efficient.
While it is important for the quality of the air in your environment to choose the most efficient filter possible, it is not always as simple as buying a filter with the highest MERV rating. Because the pores allowing for air flow in a highly-rated MERV filter are very small, the filter creates more resistance against air flow and may put too much pressure on the fan of your furnace, air conditioning, or air cleaner unit. It’s important to choose an air filter with the highest MERV rating that your particular unit will allow for maximum air flow. Information about specific MERV ratings and recommendations will generally be included with the documentation that came with your system.
We recommend choosing an air filter with a MERV rating between 8 and 11 for most residential units in order to adequately remove airborne contaminants. If your system can handle a filter with a higher MERV rating, you may wish to use a filter with a rating of 13 for even greater contaminant removal. However, it’s important to remember that filters with a higher MERV rating must be replaced regularly (every 3 months for 1" filters and every 6-12 months for 3- 6" box-type filters) to avoid restricted air flow and negative effects on your system’s performance.

Hours of Operation
Monday - Friday	9:00 am - 6:00 pm EST
Saturday & Sunday	9:00 am - 6:00 pm EST