About Us

Home About Us

Experienced care,

for heat and air

DJ Yonish, Inc. was established in 1969 as Furnace Repair, Inc. We have been at the same location in Bethel Park for the past 44 years servicing areas in Allegheny and Washington County.

Heating and cooling have been our expertise for those years doing new construction, add-on replacement, and service work.

Service Call

If this is an emergency, please call the office!


We are right next to Mr. Sewer.

Take A Survey!

Please take this simple survey to help us help you.

Service Feedback

Service Feedback. Let us know how we are doing!

Cooling, Heating, and Cleaning the Air You Breathe.
We’re Not Comfortable Until You Are.

Our History

The current owner, Don Yonish, has been in this business for 44 years, since 1975. He started out as an apprentice, working his way to an HVAC installer, then a service technician. Since 1981, he managed the company and was responsible for its complete operation. In 1993, he purchased the business. It has since been renamed DJ Yonish, Inc., Yonish Heating and Cooling D/B/A Furnace Repair.