176 Years of Our Family Serving Your Family

Trusted AC & Heating Repair & Installation in Norristown, PA

Our Featured Services

AC Repair

We repair air conditioners of every brand across Norristown, from failing capacitors and frozen coils to condenser and airflow problems.

AC Repair Service

AC Installation

We install and replace high-efficiency air conditioning systems sized correctly for your home, so you get consistent cooling without paying for capacity you do not need.

AC Installation Service

Heating Repair & Installation

We repair, replace, and install furnaces, boilers, and heat pumps matched to any fuel source, keeping your family warm through every Pennsylvania winter.

Heating Repair Service

Dependable Air Conditioning & Heating Services in Norristown, PA

Our air conditioning work covers the full life of your system. We handle repairs, seasonal maintenance and tune-ups, refrigerant recharges, and complete installations and replacements. We also service ductless mini-splits, air handlers, and heat pumps, and we diagnose the common failure points that leave homes uncomfortable in July, including bad capacitors, dirty coils, and struggling condensers.

On the heating side, we service and install furnaces, boilers, oil furnaces, and heat pumps, as well as thermostats, ductwork, and ventilation. What sets our service apart is the depth of experience. We service all equipment brands and install high-efficiency systems compatible with any fuel source, including natural gas, propane, heating oil, and electric. We have more than 35 years of experience with solar heating and geothermal heat pumps. When something fails at the worst possible hour, our 24/7 on-call service means you won’t have to wait until morning.

Flexible Financing for Your Home Comfort

Don’t let the cost of a new heating or cooling system put your comfort on hold. Davis Modern Heating & Cooling offers flexible financing options with approved credit, helping you get the system you need with manageable monthly payments.

Why Choose Davis Modern Heating & Cooling

Our company was founded in 1850 by William Davis, Jr., and incorporated as Davis Modern Heating & Cooling in 1982. We started with wood and coal heat, moved to oil in the 1920s, and today we are proud to be known as America’s Oldest Family Owned Mechanical Contractor, celebrating 176 years of caring for homes in the Norristown area.

That history shapes how we work.

We are here when you need us, and we plan to be here for generations to come.

Our Special Offers

What Your Neighbors Are Saying About Us

We have had a great experience with them for both AC service and our boiler. The service team is professional, knowledgeable, and kind. They also make a big effort to get your job taken care of as soon as possible.

Tom, Julian, and Collin did a fantastic job replacing my oil furnace with a natural gas one. This was a very involved oil to gas conversion and they did a fantastic job running the gas lines and installing the new water heater. They were very courteous and did a great job explaining everything. Fair pricing, I would highly recommend!

I've had to call Davis on several occasions with furnace issues. Each time it was fast responses pleasant & friendly technicians they were very informative & got my heater up & running fast. 5 stars from me.

Extremely happy with our experience. We scheduled a tune up thereafter and the technician Nick H professionally maintained our systems, gave us valuable recommendations, and personally rerouted some HVAC piping to help provide additional head clearance in our tight mechanical room without asking. Highly recommend all around.

Furnace was clicking but not igniting. Called Davis and they said they were backed up but would try to get to me. Half hour later they called and said a technician was on their way. Nick arrived and quickly diagnosed the problem. Am up and warming up! Great service! Would highly recommend