We service all makes and models.

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Call today!  

800-890-5123
Call 800-890-5123



Since 1987

We've Delivered Comfort to
Southern Maryland Homes & Businesses

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Residential & Commercial Heating, Air Conditioning & Geothermal Contractor

Serving Calvert, Charles & St. Mary’s Counties for Over 35 Years

Is your HVAC system tired and failing to deliver comfort? Tri-County Aire is known for "delivering comfort with care." Our experienced technicians provide top-notch installation, maintenance, and repair service for all your heating and cooling needs. 


We understand the importance of a comfortable home, which is why we offer 24/7 emergency service. Plus, with our affordable pricing and financing options, you can relax knowing that you're getting the best value for your money. Don't suffer through another season with a nonperforming HVAC system. Contact Tri-County Aire today.

Why Choose Tri-County Aire?


HVAC Technician
Certified & Dedicated Technicians
For over 30 years, our certified technicians have delivered quality heating and cooling service to local homes and businesses.
High Quality Products
We offer quality products such as Trane, WaterFurnace, Mitsubishi, Aprilaire, Honeywell, and more.
Custom Ductwork 
We manufacture custom ductwork for all of our residential and light commercial customers.

Competitive Prices
You’ll receive the highest quality products and services, at the best prices. 

Heating or Cooling Not Working?

Call us at 800-890-5123 or

REQUEST SERVICE
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