With more than 110 years of experience in the heating and cooling industry, Original Donnelly is dedicated to providing you with the best possible HVAC solutions.
We answer our phones with real live people, any time of the day or night, ready to serve you.
Our furnaces, air conditioners, back-up generators and electrical work comes with a NO-RISK GUARANTEE. If one year after installation there is not 100% SATISFACTION, we will remove the equipment and refund your full purchase amount. We make this Guarantee because we are SURE that the Original Donnelly Company has the best products, the best service, and the best people.