The Right Air Filters, Delivered When You Need Them
Shop quality air filters for your home, business, or HVAC system. Find common sizes, compare MERV ratings, and get help choosing the right filter.
Why shop with Filters Work?
- Common Air Filter Sizes
- Merv 11 and Merv 13 Options
- Bulk Order Support
- Help finding the right filter size
Ready to find the right air filter size?
Start with the right size, choose the right MERV rating, and order filters for your home, business, rental, or facility.
- Save on Bulk Orders
- Choose When Filters Get Delivered
- Skip or Cancel When You Want
Cleaner Air Starts With the Right Filter
Frequently Asked Questions
Common Questions About Air Filters
Not sure which filter you need? These answers will help you choose the right size, MERV rating, and replacement schedule for your home.
How do I know what size air filter I need?
Most filters have the size printed on the cardboard frame. Look for numbers like 16x20x1, 20x25x1, or 20x25x4.
Where can I find my filter size if it is not printed on the filter?
Check the filter slot near your furnace, air handler, or return air grille. You can also measure the old filter with a tape measure.
What does MERV mean?
MERV stands for Minimum Efficiency Reporting Value. It tells you how well a filter captures particles like dust, pollen, and pet dander.
Should I choose MERV 11 or MERV 13?
MERV 11 is a strong everyday choice for most homes. MERV 13 offers higher filtration and may be better for homes with allergies, pets, or indoor air quality concerns.
How often should I replace my air filter?
Most 1-inch filters should be replaced every 30 to 90 days. Homes with pets, allergies, heavy dust, or frequent HVAC use may need replacements more often.
Can a dirty air filter affect my HVAC system?
Yes. A dirty filter can restrict airflow, make your system work harder, reduce comfort, and increase wear on your HVAC equipment.
What if I do not see my filter size listed?
Some homes use less common filter sizes. If you do not see your size, check the exact measurements on your current filter or contact Filters Work for help.
Do you offer bulk air filter orders?
Yes. Bulk air filter orders are useful for property managers, landlords, businesses, maintenance teams, and homeowners who want extra filters on hand.
Can I get help choosing the right filter?
Yes. Filters Work can help you choose the right size, MERV rating, and replacement schedule for your home.