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Quality HVAC Services in Amherst, NY and surrounding areas since 1961.



Air Quality


Ductless HVAC

Garage Heating

Zoning Systems

Sheet Metal

Reliable Heating & A/C Services In Buffalo, Amherst & Surrounding WNY Communities

Make O'Donnell Heating & Air Conditioning, Inc. your choice for HVAC and water heating services in Amherst, NY and surrounding areas, and you’ll always be satisfied. Start with a call to (716) 836-8000, and we’ll exemplify customer dedication at every stage of the job. And with our wide range of options, from HVAC and plumbing new installation, replacement, repair, and maintenance to air quality and ductwork solutions, there’s no challenge we can’t handle. We offer prompt response, affordable pricing, and a two-year guarantee on repairs. O'Donnell Heating & Air Conditioning, Inc. is always here to help, 24/7, with Emergency Service and cost-effective strategies. We’re known for outselling our competitors simply for being honest.

Ready For A New HVAC System?
O'Donnell Heating & Air Conditioning, Inc. offers great financing options to qualified customers. To learn more about the options we have for you, simply click below!

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Looking To Further Your Career In HVAC?
O'Donnell Heating & Air Conditioning, Inc. is looking for motivated, experienced individuals now! If you would like to apply, simply click below to learn more and submit an application.

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Contact our team today for all your heating & cooling repairs, maintenance & installations!

O'Donnell Heating & Air Conditioning, Inc. upholds qualification as a Lennox Premier Dealer, making leading innovations available from one of the most recognized and well-regarded names in the industry. We further specialize in Anzel Zoning and Navien tankless water heating, drawing from the most reliable, efficient, and proven source for all of your heating, cooling, air quality, and water heating requirements. Fully licensed and insured, O'Donnell Heating & Air Conditioning, Inc. always takes the extra steps to deliver unmatched value across Eggertsville, Amherst, Snyder, Williamsville, Buffalo, Tonawanda, Cheektowaga, Depew, and Lancaster, NY. 

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