We are a family-owned and operated heating and air conditioning business located in Avondale, Pennsylvania. Chelsea has been serving the area since 1972 and remains one of the largest providers in Chester County. Our team consists of 20: expert mechanics, installers, service engineers, project managers and customer service staff, who are all experts in the many aspects of heating and cooling technologies and equipment. From custom new construction homes to in-home replacements and repairs, we work with builders, contractors and home owners all over the tri-state area.

A cleaner and more energy efficient choice. Since 1978, Chelsea has designed and implemented geothermal heating and cooling systems. Projects span from Philadelphia to the Eastern Shore. These systems tap the constant temperature of the earth in order to provide heating, cooling and hot water. Geothermal heat pumps only use electricity to move heat (not to produce it). Your home stays comfortable all year round while trimming your energy bill up to 80%. See answers to our most frequently asked questions below or visit our friends at Climate Master to figure out your projected savings.

Chelsea has been installing and maintaining geothermal systems since 1972 and stands at Chester County's forefront in the installation of this innovative technology. Our extensive knowledge in the design and implementation of geothermal heating and cooling systems spans from Philadelphia to the Eastern Shore. For more go to our geothermal page. In addition to the services above, we specialize in maintenance agreements on most makes and models of heating and AC units. Our completely equipped, on-premises sheetmetal shop with computerized manufacturing controls, allows us to quickly and competently provide custom ductwork for any application.

Had a poor service experience. Service Tech did not know how to operate / service a Thermostat installed by Chelsea installers and left with a heater.

Great place to work, would love to come back one day and work there again.

Let the Feds help you pay for that new Heating and Air Conditioning system. The Federal Tax Credits have been re-instated. The typical system lasts.

What's new?

Need a career? Or know someone who does? Contact us at Chelsea Heating and Air in Avondale Pa

Posted on Mar 01, 2021  •  Facebook

Although we'll do everything possible to stick to installation time estimates we give you, it is possible that installing equipment can take longer than anticipated in order to do it right.

Posted on Mar 01, 2021  •  Facebook

Different rooms in commercial buildings will have different requirements, such as a server room, or a large, open atrium. Commercial HVAC experts can design your heating system into different zones to make sure each room stays at the right temperature.

Posted on Feb 25, 2021  •  Facebook

If you smell gas, turn off your furnace and check for leaks. A gas furnace shouldn’t leak at all and smelling gas is a big sign something is wrong.

Posted on Feb 22, 2021  •  Facebook

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