About Us

Bob & Tom Deroche,

Williams Service Company was opened in 1979 by Mr. Gary Williams in East York. The Deroche brothers, Tom and Bob bought Williams Service Company in January of 1991. Tom was currently employed at C.C. Kottcamp as a Service Tech while Bob the younger brother worked as a public accountant at Philip R. Friedman & Associates LLC. When Mr. Williams suddenly passed away, they decided that this would be an excellent opportunity to purchase the company with the help of their father.

Williams Service Company Building
The brothers had a vision that today is a thriving business due to their family core values. Their tenacity and knowledge have kept the brothers moving in the direction of unparalleled growth. Today, they are a leader in providing HVAC & Commercial Refrigeration. They have created a diverse customer
base with our local residential community, and a wide range of commercial and industrial accounts scaling from the smallest to the largest facilities. Over the years, their footprint continues to expand and grow into Harrisburg, Lancaster, Hanover, and the surrounding areas.

Williams Service Company’s primary business is solving HVAC problems. They specialize in new installations, replacement, or repair of existing systems. Each and every Technician is highly trained and EPA certified with technical expertise in Residential, Commercial, Industrial Refrigeration & Installation meeting a wide range of HVAC needs 24/7. WSC analyzes and chooses the best equipment to determine the optimal system for the required area, and installs & calibrates the equipment for a smooth transition that will sync with the new changes. Tom says, “Big or small, we are specialized to do it all!”

As Williams Service Company continues to grow, one thing remains constant, its team of people. Bob says, “We are fortunate to have a GREAT team of people who are dedicated to excellence in every aspect of our business. When you call Williams Service Company you will receive the best possible service experience.” We look forward to servicing you!

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 Environment

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, commercial 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!