certified company
Based on 364 reviews
Our Certification Process
Best Pick Guarantee
Verified License(s)
Verified General Liability Ins.
Verified Workers' Comp
5th year as a Best Pick Call
"Oliver continues to differentiate itself through its unique positioning, strong history, and ongoing commitment to providing superior and unparalleled customer service. As a character-based company, we not only stand behind our work, we give back to our community. Your peace of mind is our first priority."

David Oliver | Owner
Company Information
Services Offered
Oliver installs, repairs, and services most types of HVAC equipment for residential, commercial, and industrial customers. The company also offers maintenance agreements to fit most budgets. There are no residential overtime fees.
The company honors manufacturers' parts warranties and offers up to a ten-year parts-and-labor warranty on newly installed equipment and a two-year warranty on all repairs.
Company History
Since 1971, the second-generation, family-owned company has served customers in Pennsylvania, Delaware, and New Jersey.
Oliver employs NATE-certified technicians and has received multiple Best of Delco awards from the Delaware County Daily Times.
Additional Information
The company sells and services all brands of equipment.
Areas Served
Montgomery County, Chester County, The Main Line, Delaware County
A selection of 364 homeowner reviews:
“I have used Oliver for my heating/air conditioning and plumbing needs for over ten years. They do excellent work and are well organized and honest—A+.”
“They are always on time, know everything about the units, and do the work cleanly and quickly. Their staff is outstanding.”
“Their heating/air conditioning service is excellent. Put in a new system in one day—works great. Servicemen are knowledgeable and courteous—A+.'”
“I've had Oliver for my heating and cooling needs for almost ten years. They have always been professional, and they do quality work.”
“I used them in the past when my A/C decided to quit during the heat wave. They came out the same day. They are great.”
“Corey is the technician who comes here every six months. Cannot say enough good thing for him.”
“They came on time. Installed a new heating and air conditioning plant, in a timely manner. The units have worked efficiently.”
“Have had Oliver service our heating and air conditioning systems for over 10 years with few complaints.”
“Called in to ask a question regarding our A/C unit, and was given a quick and accurate answer immediately.”
“Yearly inspection and contract renewal went smoothly.”