Gary Harstad is the owner and operator of Comet Air Duct Cleaning, headquartered in Billings,  Montana. This is a highly regarded Air Duct Cleaning company in Yellowstone County.

Gary has over 40 years experience as a General Contractor and has gained knowledge  and experience in air duct cleaning. 

Some of the services Comet Air Duct Cleaning provides include: Air duct cleaning and disinfecting, dryer vent cleaning, and whole building air purification.

When it comes to providing expert Air Duct Cleaning services, nothing takes the place of experience. Gary began working in Air Duct Cleaning 5 years ago and started Comet Air Duct Cleaning in 2015.

One of Comet Air Duct Cleaning’s goals is to provide their Yellowstone County clients with professional, high quality, and affordable services. People often choose Comet Air Duct Cleaning because of their reputation.

The result, one of the most successful Air Duct Cleaning companies in Billings!  

What do their customers think?

One fan of the company publicly wrote, “These guys were so amazing to work with! They answered all the questions we had and were very professional. THANK YOU COMET!!!!”

Another fan of the Comet Air Duct Cleaning publicly wrote, “Awesome at staying in contact, on time and remained in contact with me while I was out of town working even though my wife was there at the house, extremely satisfied and highly recommend! Thanks, guys !”

Having owner-operated experts, like Gary providing knowledgeable and expert care is an asset to Billings and Yellowstone County, Montana.

Business owners take risks and often work long, exhaustive hours to service their clients. There are freedoms in owning a business, but these freedoms come at a cost. Rarely acknowledged are business owners like Gary Harstad that employ people and ensure their staff are paid continuously. Sure, people earn their wages through their time, hard work and skills, but let’s take a moment and thank Gary for having and continuing the business ownership game that allows people an opportunity to produce and earn those wages.

Need Air Duct Cleaning service? Give Comet Air Dust Cleaning an opportunity by calling them at 406-321-1504, or visit them online at:

In addition to running a successful Air Duct Cleaning business, Gary supports Local Chamber BBB.

So from the staff of Local Search Force that runs the County Advisory Board

Gary Harstad, you are highly commended for your service to the residents of Yellowstone County, for having and maintaining a business that adds to the financial well-being of Montana and for your willingness to participate in social betterment activities.


Well done Gary Harstad!


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