History
Founders Erik Harley and Sean Duffy have been working together in the commercial HVAC industry for close to 20 years. Harley & Duffy was created after they saw a need for need for honest, reliable, and high quality residential HVAC and Plumbing services in Southern Maryland.
Specialties
Our highly-trained technicians use state-of-the-art equipment and are certified to perform a wide range of repairs and installations. Most of our repairs and replacements are done using a straightforward, flat-rate pricing structure, so you know the cost up front with no hidden fees. We offer 24-Hour Emergency Service, so whatever your needs - Plumbing, Drain and Sewer or HVAC services - our fully-equipped service vehicles are ready to go!