Central PA’s Service Excellence

Experience the Williams Service Difference!

(717) 755-2902

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Keep Your Water Heater, Ductwork, and HVAC Systems Running Properly at All Times

Are you ready to start enjoying a home or business that’s always the perfect temperature? Get started with the expert contractors from the team at Williams Service Co. We’ll always keep your systems running the way they should so that you can rest, relax, and focus on the other tasks at hand.

Let’s get you set up with an appointment with one of our expert HVAC technicians! Remember, we’re here for you 24 hours a day, 7 days a week.

Flexible financing available through Synchrony
Furnace Repair in York PA

Heating Systems

Williams Service Company in York PA can help save you money by replacing your existing equipment with new high efficiency equipment.
Air Conditioning in York PA

Air Conditioning Systems

Let Williams Service Company install a quality air conditioning system in your home and save with a maintenance agreement.
Refrigeration in York PA

Refrigeration Systems

Our commercial HVAC services cover heating systems, air conditioning systems, and ventilation systems to keep your equipment operating efficiently.
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Why Hire
Williams Service Company
HVAC Experts

There are plenty of HVAC companies out there but there’s none quite like the team at Williams Service Co.! We go above and beyond in everything we do so you can enjoy a perfectly controlled climate in your home or business.


24/Hour Assistance

When you need HVAC help you need it now, which is why our team offers 24/hour assistance. Give us a call any time of the day or night and we’ll get you squared away. We’ll send out a contractor to take a look at your issue and get it resolved ASAP!


Financing Plans

Expand your purchasing power with Promotional Financing through Synchrony. Synchrony is one of the nation’s premier consumer financial services companies and we’re proud to offer it as one of the many benefits of partnering with our team. Know we’ll get the job done no matter what your financial situation!


Comprehensive HVAC Services

We don’t just focus on residential or commercial services here at Williams Service Co. Instead, we get you squared away no matter what assistance you need! Whether you’re looking for ductwork framing or repairs, refrigeration assistance, or HVAC needs on any kind of property, we’ve got you covered.


45+ Years of Experience

Williams Service Co. has been serving locally in the York County, Pennsylvania area for over 45 years. That’s what’s given us the incredible skills and experience that we possess. With us, you know you’re getting top-notch service that truly tackles any HVAC needs or issues that you might have.

Flexible financing available through Synchrony

What Our Customers Are Saying About Us

Don’t just rely on our word; take it from a few of our customers and rest assured that you’re truly partnering with the best HVAC and refrigeration team out there!

Williams Service Company recently did service on my mini-split system that they did not originally install. I had called many local firms to get this service and they all rejected me because I did not buy the systems from them.

The quality of their equipment is top-notch and the quality of the work their techs did was excellent. Their responsiveness in solving a problem that arose from a simple mistake on the techs part before leaving (yes they are human) left me with no heat from one of the other heads. Williams stuck with me throughout and did the right thing all the way along the line.

If you have lots of time to waste dialing for someone to service your HVAC needs, have at it. But if you value good quality workmanship, responsiveness and fair hourly rates, stop wasting time and call Williams Service Company. Williams is the only one I will call in the future.

-Randy C.

They were there when they said they would be. They cleaned our old boiler for the winter and it worked well all winter. No complaints.

-Thaddeus R.

These guys are the best. They have found and repaired many mistakes made when the unit was installed. Also, they take the time to educate us on how our unit and thermostat works.

-Zeno F.

The guy was very nice, proffesional and did a great job!!

-Deb G.

We want to express our sincere thanks and appreciation for the excellent service provided to us by Ray and Ryan in the recent replacement of our water heater. Our experiences with Williams Service have been exemplary. Your technicians, particularly Ray (because he’s the one we’ve seen the most), are pleasant, courteous and professional. It is refreshing to work with a company that still values customer service the way you do. We always recommend your company to others.

-Crystale S.

Since 2003, Williams Service Company has provided excellent service to our home in Red Lion and also saved us a lot of money when we moved to Mount Wolf by fixing up an older furnace when other companies were only recommending a complete new furnace installation.

-Sandi S.

Commercial & Residential Installation & Service

Hours a Day

Days a Week

Days a Year

Experience The Williams Service Company’s Difference

Friendly • Proficient • Reliable

Williams Service Company’s dedication to extraordinary service is what sets us apart from our competition. We accomplish this through a unique combination of a highly trained workforce and superior equipment. Each and every one of Williams Service Company’s technicians is EPA certified and cross-trained in HVAC and refrigeration.

Serving South Central Pennsylvania since 1979, our extensive fleet of GPS-guided service vehicles is fully outfitted with modern, well-maintained equipment and able to handle any service call. The result is an unmatched diagnosis rate. We find the problem and we solve it…quickly and efficiently.