Looking for a company that specializes in HVAC in Jefferson, MD? You can rely on Markool Heating & Cooling. We’ve built up a base of loyal customers since we opened in 2016, and it continues to grow. With our more than 20 years of experience, there’s hardly a project we can’t handle. Heating and cooling repairs, installation, and maintenance are our specialties.

You’ll get the professional work of a large company combined with the friendly, personalized care of a smaller local business. Before every job, we provide clients with an estimate at no charge and with no hidden fees.

We pay attention to the smallest details, treat every property with respect, and accommodate the busiest schedules. Our goal is to ensure that you have efficient heating and AC year-round. We’re a Carrier Factory Authorized Dealer and a 2023 winner of the Carrier President’s Award.