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Why Central New York Chooses Tri-County

We’re proud to have served homeowners and businesses across Madison, Oneida, and Herkimer counties for nearly four decades. Whether it’s a late-night emergency repair or a full system installation, our customers know they can count on us for expert service, fair pricing, and honest advice.

Customer Testimonials

"I have been a customer of Tri-County for well over twenty years. They are the only company I call for my heating and cooling needs. I've always had fast service and high-quality work!"

Mary Ann B.

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Serving Madison, Oneida, and Herkimer Counties

(315) 829-4100

9 Tannery Lane, Vernon, NY 13476

Monday–Friday: 8:00 AM – 5:00 PM

24/7 Emergency Service Available

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© 2025 by Tri-County Heating and Air Conditioning. Website by Media Haus.

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