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

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    Check Out Our Money-Saving Residential Service Plans:

    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.
    Seasonal Maintenance: 5 HVAC Tips for Winter Months

    Seasonal Maintenance: 5 HVAC Tips for Winter Months

    If you live in a climate where October means not just pumpkin spice and spooky season, but also dropping temperatures, it is also time to think about switching over from air conditioning to heat. Even though the days may still be warm, the nights are getting chilly --...

    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...

    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.