Williams Service Company remains OPEN and ready to serve during this crucial time.

The #1 HVAC Contractors in York County, Pennsylvania

We’re a team of local HVAC contractors that specialize in heating and cooling, refrigeration, and duct framework. Get started with our expert team and make sure all your HVAC and refrigeration systems are working the way that they should.

Commercial or Residential, We Get You Set Up With Expert HVAC Systems

Residential HVAC

If you need heating and cooling assistance around the home, we’ve got you covered! Our HVAC experts will get your home set up with AC systems or a furnace that keeps your property at the perfect temperature. With us, we make sure you’re never too hot or too cold. Relax and enjoy the comfort of your home at a temperature that you love.

Commercial HVAC

Does your business need assistance from a professional team of commercial HVAC contractors? We’ve got you covered! We work with commercial properties both large and small to make sure that your company has the perfect climate control system year-round. Focus on managing your business operations rather than wasting time stressing about your office’s temperature.

Water Heaters

Water heaters are critical for making sure that you not only get a warm shower but also ensuring that your dishwashers, sinks, washing machines, and other appliances work correctly. Our team understands how to get your water heater working correctly so that you can enjoy warm water around the home at all times! 

Duct Framework

Whether you’re looking to install a brand new duct framework or need help with simple repairs, we’ve got you covered. We’re here to help you with anything that you need regarding your duct framework so that you can continue running your HVAC systems efficiently. Our experts make sure you’re fully covered, no matter what.

We Help Home and Business Owners Manage Their Property’s Climate

Fast Turnaround Times

We understand that your time is valuable and that’s why we work quickly and efficiently. Williams Service Co. contractors make sure to get your HVAC systems installed, serviced, or repaired as quickly as possible so that you can put your time and energy where it’s needed. 

A Reliable Team

You can count on the team at Williams Service Co. to show up when we say we will and to get the job done within our allotted timeframe. Our goal is to make sure that we don’t leave you hanging and that we get your HVAC systems working properly so you can stay comfortable.

Low Rates

We pride ourselves on getting you the best possible rates for HVAC services, refrigeration assistance, and duct framework help. That’s why our team offers some of the most competitive rates in the industry. Work with our team and know you’re getting the best possible price!

Friendly Team Members

We don’t just care about professionalism. We care about creating a positive experience for each one of our clients, too. That’s why the team at Williams Service Co. is extremely friendly in every interaction we have with you. With us, you know that you’ll be greeted by a cheerful smile at all times!

Why Williams Service Co. Stands Out from the Crowd

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 that 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 know that we’ll get you squared away regardless. 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. 

40+ Years of Experience

Williams Service Co. has been assisting locals in the York County, Pennsylvania area for over 40 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. 

What Our Customers Are Saying About Our HVAC Contractors

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, professional and did a great job!!

Deb G.

They were very professional and on time.

Brenda M.

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.

Keep Your Water Heater, Ductwork, and HVAC Systems Set Up 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 make sure that your systems are always running the way they should so that you can rest, relax, and focus on the other tasks at hand. 

Reach out to us via phone, email, or contact form, and 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, so don’t hesitate to give us a call when you need us!

Expand your purchasing power with Promotional Financing through Synchrony.
Synchrony is one of the nation’s premier consumer financial services companies. Our roots in consumer finance trace back to 1932, and today we are the largest provider of private label credit cards in the United States based on purchase volume and receivables.
  • A simple application process, and fast credit decisions
  • Unsecured, revolving credit lines
  • Promotional financing options1
  • Convenient monthly payment options
  • Online account management
1Subject to credit approval. Minimum monthly payments required. See store for details.
For all promotions: Qualifying purchase must be made with your Home Design credit card issued by Synchrony Bank and a $29 account activation fee will apply and be charged at the time first purchase posts to account. For new accounts: Purchase APR is 26.99%; Minimum Monthly Interest Charge is $2. Existing cardholders should see their credit card agreement for their applicable terms. Subject to credit approval.




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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Commercial & Residential Installation & Service

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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, capable of handling any service call. The result is an unmatched diagnosis rate. We find the problem and we solve it…quickly and efficiently.