We serve the greater Baltimore area in central Maryland. We service Harford, Baltimore, Baltimore City, Anne Arundel, Howard, and Prince George’s county.

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Company Info

“Since 1978”

Those two words may not mean much to you, but to us, they mean everything. That’s because 1978 is the year it all began for our heating and cooling company.

Heating and cooling is and always has been our family business. And a family business means that we operate the business with care and concern and understanding for those who work with us and especially those who we work for…. our customers.

From the days of S&K Heating & Air Conditioning in 1978 to the current name of One Hour, our focus has been the same family values in our business that have blessed our family for decades.

We accept:

  • Visa
  • Mastercard
  • American Express
  • Discover

Local Technicians You Can Trust


We provide financing to help our client’s make the best decision for them. We offer long term financing to provide low monthly payments as well as some options with no interest at all.

Protection Plans

We offer all a variety of Protection Plans. Visit https://www.directenergyprotects.com for more information.

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Area Served

Serving the greater Aberdeen area: Perryville, Conowingo, Aberdeen, Bel Air, Fallston, Whiteford, Monkton, Jarrettsville, Cockeysville, Reisterstown, White Marsh, Perry Hall, Middle River, Rosedale, Dundalk, Essex, Parkville, Baltimore, Towson, Linthicum Heights, Owings Mills, Randallstown, Pikesville, Ellicott City, Columbia, Laurel, Bowie, Crofton, Odenton, Gambrills, Severn, Jessup, Crownsville, Edgewater, Annapolis, Arnold, Gibson Island, Stevensville, Chester, Normans, Mattapex, Dominion, Severna Park, Pasadena, Elkridge, Glen Burnie.

  Business Address

653 W Belair Ave.
Aberdeen, MD 21001

License Number


Your Local One Hour Heating & Air Conditioning® Team