Residential and light commercial heating and air conditioning, sales, service, and installation.

Olney Heating and Air Conditioning is a family-owned company providing residential and light commercial heating and air conditioning sales, service, and installation across Olney, Silver Spring, Rockville, Bethesda, Gaithersburg, and the wider Montgomery County, Maryland area. For more than 40 years, local homeowners and businesses have trusted our licensed, insured technicians for honest advice, fair upfront pricing, and workmanship that lasts.

Need a fast furnace repair on a cold morning, a new high-efficiency air conditioner before summer, or routine maintenance? We handle it all. Our heating services cover gas and propane furnaces, boilers, heat pumps, and complete central heating systems. For cooling, we install, repair, and maintain central air conditioning, ductless mini-split systems, and light commercial units sized correctly for your space.

We also improve the comfort and air quality of your whole home. We design and seal ductwork; install air cleaners, purifiers, humidifiers, and UV lamps; set up smart thermostats and zoning; and service water heaters and whole-house standby generators. If it keeps your home comfortable, safe, and efficient, our team can install, repair, and maintain it.

What sets us apart is simple: we treat every customer like family. We show up on time, explain your options in plain language, and never push work you do not need. Every job, large or small, gets the same careful attention and the same fair, upfront price.

From the first cold snap of fall to the peak of a humid Maryland summer, your system works hard, and small problems can become costly breakdowns. A seasonal tune-up keeps equipment efficient and extends its life, so we offer maintenance plans tailored to your home. Call 240-286-6590 to reach a local team that knows Montgomery County homes, or request a free estimate today.