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Manufactured in Hudson, NH
Family-Owned since 1973
Daily Deliveries across New England
Custom & Odd Sizes Made to Fit
Large Local Inventory
Real People. Real Support.

ABOUT AIREX FILTER
- Over 50 years of trusted expertise in residential, commercial, and industrial filtration solutions.
- Comprehensive selection of standard and custom air filters designed to meet diverse application requirements.
- High-performance products manufactured using advanced technology and premium-quality materials.
- Dedicated technical support, filtration management guidance, and on-site assessment services.
- Environmentally responsible practices with a commitment to sustainability, quality, and reliable delivery.
Featured Filters
Popular Products ready to ship.
Resources & Insights
Helpful Information for cleaner, healthier buildings.
Frequently Asked Questions
Quick answers to the questions we hear most.
How often should HVAC filters be changed?
HVAC filters should be changed at least every three months or as needed. If the filter looks visibly dirty, it should be changed immediately. Determining if a filter needs to be changed can also be based on when the resistance of the air filter reached the recommended maximum pressure drop recommended by the manufacturer. Gauges to determine pressure drop are most often found on larger commercial systems.
What is an HVAC air filter?
An HVAC air filter is a device that is used to capture airborne particles and contaminants from the air that passes through your air conditioning or heating system. The filter traps particles such as pollen, dust, pet dander, mold spores, and other allergens, which can help improve the air quality in your home or business.
Who supplies air filters in Boston?
Airex Filter Corporation supplies HEPA and HVAC air filters for Boston-area healthcare facilities, laboratories, cleanrooms, commercial buildings, contractors, and industrial facilities.








