top of page


24/7 Emergency Service

When a heating or cooling emergency rears its ugly head, the last thing you should have to worry about is who to call to provide you with speedy, professional solutions at reasonable prices. If you find yourself facing down a broken heating system or other heating and AC emergencies give the experts at The Donohue Halverson a call for immediate service, day or night. 

Furnace/Boiler Services

The last thing you want when the temperature plummets is for your furnace or boiler to fail. Sure, wrapping yourself in heavy layers and blankets can be cozy, but it’s not an ideal way to live during the winter. When your furnace or boiler isn’t working properly most times all it needs is a tune up or minor repair to get your home or office warm again.  We recommend that your furnace / boiler be cleaned and serviced once a year.  A proper service will provide greater longevity of your heating source.  We also provide full replacement / new installation furnace and boiler services. 


If you have an area of your home which isn’t hooked up to the rest of the heating or cooling system in your home or business, then be sure to ask your HVAC expert from Donohue Halverson about how a ductless mini split system would benefit you. We offer reliable and speedy ductless mini split system installation, so why wait? Give us a call!

Air Conditioning

Upstate New York Summers are hot and humid. It is imperative that your air conditioning units are working properly and are able to provide your home or business with cool, comfortable air whenever you need it. That’s why The Donohue Halverson is always available to provide you with air conditioning and AC cooling services for your home or business in Ithaca, NY - we’re happy to help keep you cool, so give us a call today.

We are thrilled to announce that our company has achieved the prestigious status of being a Mitsubishi Diamond Contractor. This recognition signifies our commitment to excellence in installing and servicing Mitsubishi Electric heating and cooling systems. As a Diamond Contractor, our team has undergone extensive training and certification, ensuring that we provide unparalleled expertise and exceptional service to our valued customers. Join us in celebrating this milestone and experience the ultimate in home comfort with our Mitsubishi Diamond Contractor solutions.

bottom of page