About Williams HVAC | Rising Sun, MD Cooling

Harford: 410-893-0859

Cecil: 410-658-3794

Balto. Co 410-676-4711

877-525-4328 (HEAT)

Serving Harford, Cecil, and Baltimore Counties and Southern Pennsylvania

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24 Hour Emergency Service

On All Brands

Next Day Installation

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Learn about our company

Williams HVAC is a family owned and operated company that has been serving this area since 1986. Our owner, William Meurer, attended Harford Technical High School and graduated from the HVAC program in 1980. His interest in the field grew after working for the Trane Company for 5 years following graduation.


He started Williams Heating and Air Conditioning in 1986 and has been an exclusive Trane dealer ever since. Williams HVAC employees take great pride in the honest and reliable services we provide.


In Maryland, we serve Cecil, Harford, and Baltimore Counties, and we also travel to Southern Pennsylvania. We provide 24-hour emergency assistance.

For more information about any of our services, contact:

Cecil: 410-658-3794

Harford: 410-893-0859

Toll-free: 877-525-4328 (HEAT)


24 Hour Emergency Assistance





Williams HVAC Services has been serving Harford, Cecil, and Baltimore Counties in Maryland and Southern Pennsylvania.

Contact Williams HVAC

Expect the best from us

As a family owned and operated company, we’re here to provide you with outstanding services. With over 25 years of experience in the industry, we will provide you with high-quality heating and air conditioning services. Call us for a FREE estimate on heating, cooling, and accessory products.

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6 out of 6 customer reviews on Facebook gave us 5 stars.

- Williams HVAC