For new-builds and older homes, smaller cottages, sprawling mansions and every challenge of weather in Lancaster, New York, O'Donnell Heating & Air Conditioning, Inc. is the right answer for comfort. With a history covering 63 years, we’ve fulfilled the demands of negative and triple digit temperatures, insufficient and excessive humidity and every possible concern with comfort, air quality and the associated costs. We specialize in affordable, reliable and satisfying solutions.

As a Lennox Premier Dealer, O'Donnell Heating & Air Conditioning, Inc. offers the modern examples of furnaces, air conditioners, zoned heating, ductless mini splits, garage heaters and the perfect option for your specific home, lifestyle and budget. Our in-house sheet metal fabrication shop allows customized design without compromise, delays or the expense of middlemen. Outselling our competition simply for being honest, we deliver successful results.

Fully licensed and insured, O'Donnell Heating & Air Conditioning, Inc. remains on call for 24/7 emergency service across Eggertsville, Amherst, Snyder, Williamsville, Buffalo, Tonawanda, Cheektowaga, Depew, and Lancaster, NY. We cover our repairs with a two-year guarantee and highly encourage seasonal maintenance of all makes and models to prevent the majority of malfunction, extend equipment life, restore efficiency levels and meet warranty requirements. For oil to gas conversion, duct repairs, thermostat upgrades and a nearly endless list of skilled services, O'Donnell Heating & Air Conditioning, Inc. is on the job and eager to make beneficial improvements.

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