About us

Filter Service Company has been meeting the indoor air quality needs of the state of Alabama and the surrounding areas since 1982. As a proven regional leader in air filtration sales and service, air duct cleaning, and infectious controls equipment, we take our role seriously in ensuring your indoor air environment is served by the best products, service, and the most knowledgeable staff.

Our service personnel place a priority on professionalism & quality work.

Our company maintains memberships in the National Air Filtration Association and the National Air Duct Cleaning Association, demonstrating our commitment to meet and exceed industry standards. As a company based in Alabama, we maintain a license with the Alabama State Heating and Cooling Board.


Our Vice President, Doug Johnson, Certified Air Filter Specialist©, has over 30 years of experience helping building engineers in this region meet their HVAC filtration, duct cleaning, and isolation room needs in a proficient and cost-effective manner. Doug holds an HVAC Contractors license.

Greg Wyatt, our indoor air quality manager, has 17 years experience in the HVAC industry. Greg directs our commercial and residential Air Duct Cleaning division. He maintains certifications as a Certified Air Filtration Specialist©, a Ventilation System Mold Remediator© and an Air Systems Cleaning Specialist© granted by the National Air Duct Cleaners Association. From construction managers to building engineers to home owners, Greg’s extensive background enables him to work knowledgably with each of his customers — no matter the size of the project.

Our service personnel place a priority on professionalism and quality work. Our team leaders have continued their training by gaining certification from programs such as the National Certified Technician program from the National Air Filtration Association and the Air Systems Cleaning Specialists Program from the National Air Duct Cleaning Association.

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