Harley and Duffy is a residential plumbing, heating and air conditioning company created with YOU the homeowner in mind. Founders Erik Harley and Sean Duffy have been working together in the commercial HVAC industry for close to 60 years, and developed Harley & Duffy to fill a need for reliable, quality home services in Southern Maryland.
For the majority of our services, Harley & Duffy offers a flat-rate pricing plan that keeps customers in control of the costs. Whether you're looking to upgrade or replace your AC system or just need us to fix a leaky faucet, our highly trained technicians are ready to help!