Central PA’s Service Excellence

Experience the Williams Service Difference!

(717) 755-2902

We are rapidly growing
our team and expanding.

Click Here to Apply!


YCEA’s Member of the Month

Tom Deroche, Co-Owner of Williams Service Company, joins YCEA Director of Membership and Events, Kyle Joines, to talk about the excellent service the company provides in heating, ventilation, air conditioning (HVAC) and refrigeration sales. Williams Service Company has been serving clients throughout York, Lancaster, Harrisburg and surrounding areas since 1979, and have become a leader in providing HVAC and refrigeration sales and service. Williams Service Company’s diverse customer base includes a wide range of commercial and industrial accounts with facilities of all sizes. Additional information about Williams Service Company can be found online at www.williamsservicecompany.com or by phone at 717-755-2902.
Congrats to Williams Service Company for being honored as YCEA’s April 2022 Member of the Month!

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.
REDUCE VIRUSES with an Air Purifier

REDUCE VIRUSES with an Air Purifier

HALO-LED™ Whole Home In-Duct Air Purifier The HALO-LED™ is the industry’s first LED in-duct, whole home air purification system that is both mercury free and zero ozone compliant. The HALO-LED™ proactively treats every cubic inch of air conditioned space, reducing...

YCEA’s Member of the Month

YCEA’s Member of the Month

Tom Deroche, Co-Owner of Williams Service Company, joins YCEA Director of Membership and Events, Kyle Joines, to talk about the company's excellent service in heating, ventilation, and air conditioning (HVAC) refrigeration sales. Williams Service Company has been...

The #1 Local 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 ensure that all your HVAC and refrigeration systems are working properly.

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, 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. Stop wasting time stressing about your office’s temperature.

Water Heaters

Water heaters are critical for getting 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 to 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 to 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.

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 the allotted timeframe. Our goal is to make sure that we don’t leave you hanging and that we get your HVAC systems working properly for you to stay comfortable.

Competitive 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 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.

40+ Years of Experience

Williams Service Co. has been serving locally 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 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, 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.

Commercial & Residential Installation & Service

Hours a Day

Days a Week

Days a Year

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.