And Surrounding Areas.



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Heating Services

We can repair, maintain, and install your systems!

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Why Choose Us?

  • Group rates for oil deliveries
  • FREE in home estimates
  • Electrical association manufacture rebates
  • Highly trained, experienced technicians
  • PECO Smart Home Energy Rebates
  • Extended Labor Warranty
  • Financing Available

Customer Reviews

Professional Heating & Air Conditioning in West Chester

We promise never to be undersold!

When you live in Chester County, Pennsylvania, you know exactly how cold it gets during the winter and how unbearable the heat can be during the summer. It is very important to have a reliable company that you can depend on for all your repair services. At Donnelly Heating & Air Conditioning, we recognize the importance of having an HVAC unit which works year round and provide service 365 days a year. If your unit is presenting problems or not working properly, call today at (610) 399-1998 to find out more information!

We offer services for the following systems:

Providing Expert, Professional Service Throughout Chester County

We have more than 30 years of experience and have operated as a local, family owned business for more than 20 years. Our team has dedicated ourselves to providing exceptional service and building lasting relationships in the community. As trained professionals, we work as quickly and efficiently as possible because having a broken air conditioner or heater can be very stressful and uncomfortable. Your satisfaction as our customer is very important to us and we offer up front pricing and free estimates so you know exactly what to expect beforehand.

In addition, the following qualities set us apart from other companies:

  • Our estimators provide our customers with competitive and professional proposals
  • The certified and experienced installation crew we have guarantees quality installations
  • Our technicians are trained to correctly diagnose and repair all makes and models
  • Our qualified staff members are all friendly, reliable, and fully capable of assisting you
  • Low interest financing and energy loans are available for qualified customers
  • We offer service 365 days a year

Speak with our friendly staff members today!

At Donnelly Heating & Air Conditioning, we only hire experienced professionals to ensure you receive the top-quality service you deserve. We would be happy to provide more detailed information on our services and products. Please contact us at (610) 399-1998 to request a free estimate from our representatives today!

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