When you’re in need of HVAC services in King of Prussia, PA, you can depend on the team at O'Brien Heating & Air Conditioning. We’re here for HVAC repairs, installation, and replacement, and also the tune-up services that will look after your system throughout the seasons. Whether you’re looking for a new furnace, air conditioning repairs, or you’re looking to arrange regular tune-ups, our team would be very happy to help.

We’ve been offering our services since 1955, showing our customers what great service we have to offer. We’re a BBB-accredited business too with an A+ rating. We also carry a wide selection of Lennox systems and we’re proud to be a Lennox Premier Dealer. Need more reasons to use our services? Just take a look at our glowing reviews. Call our team today to arrange HVAC services that go above and beyond for your year-round comfort.