Get your systems serviced right the first time.

Heating – Cooling – Electrical Service in Cleveland, Medina and Lorain

We Guarantee it. Family owned and operated for more than 114 years, Original Donnelly Heating and Cooling has been serving Medina, Lorain and Cleveland’s west side. Our staff of trained and certified heating and cooling professionals are courteous, professional, and customer service driven. We are not happy until you are.

Commercial, Residential, New Construction, or an Emergency Repair, you can trust Original Donnelly to do the work right, to code, and get it right the first time. You can count on us to be there when you need us, charge a fair and honest price and stand behind our work.

Our work comes with a NO-RISK GUARANTEE. If one year after installation you are not 100% satisfied, we will remove the equipment and refund your full purchase amount. We make this Guarantee because we are SURE that Original Donnelly Heating, Cooling and Electric has the best products, the best service, and the best people.


Stay Connected


Local (216) 961-6800
Toll-Free: 1-800-369-8999
Fax: (216) 961-8702
9805 Madison Ave, Cleveland, OH 44102