Harley & Duffy: Trusted Plumbing & HVAC Services in Upper Marlboro, MD
For homeowners and businesses in Upper Marlboro, MD needing reliable plumbing, septic, or HVAC work, Harley & Duffy is a local fixture. The company provides essential home services around the clock, backed by a team of certified technicians. They focus on residential needs, making sure your home's critical systems run smoothly through Maryland's humid summers and chilly winters.
Business Overview
Harley & Duffy operates 24 hours a day, seven days a week, for emergency repairs. Their fully-equipped service vehicles are ready to roll to your address at any time. The team consists of highly-trained professionals who handle everything from routine maintenance to urgent breakdowns. They specialize in residential services, understanding the unique setups of local houses.
Key Services
The company covers a full range of home comfort and utility needs:
- Plumbing & Septic: From plumbing inspections to drain and sewer services, they address clogs, leaks, and septic system maintenance common in the area.
- Heating & Air Conditioning: HVAC repairs, installations, and maintenance to keep your home comfortable year-round.
- Emergency Repairs: Available immediately for burst pipes, failed AC on a hot day, or heating outages during a cold snap.
Areas Served
Harley & Duffy serves Upper Marlboro, MD and many surrounding communities. Their service area includes Forestville, Rosaryville, Brock Hall, Marlboro Village, Brandywine, Westphalia, Marlboro Meadows, Melwood, Croom, Baden, Queensland, Brown Station, and Marlton. They know the housing styles and infrastructure in these neighborhoods, from older homes to newer developments.
Company History
Founders Erik Harley and Sean Duffy worked together in commercial HVAC for nearly two decades. They started Harley & Duffy after noticing a gap in the market for honest, high-quality residential HVAC and plumbing services in Southern Maryland. Their background in large-scale projects gave them the expertise to apply robust solutions to home systems.
Leadership
Joe, who was hired to build the residential side of the business from the ground up, manages day-to-day operations. He acts as chief quality control manager, checking every job for customer satisfaction. His management experience comes from working with top mechanical contracting companies across the mid-Atlantic region, giving him deep insight into local standards and needs.
Specialties & Highlights
Several features set Harley & Duffy apart:
- Flat-rate pricing for most repairs and installations, so costs are clear upfront with no surprises.
- State-of-the-art diagnostic and repair equipment used by every technician.
- 24/7 emergency service with fully-stocked trucks to handle jobs on the first visit.
- Certifications and ongoing training for all team members.
- A focus on residential systems, tailored to Maryland homes.
Why Locals Choose Harley & Duffy
Residents in Upper Marlboro, MD turn to Harley & Duffy for consistent reliability and straightforward service. The company’s long history in the industry, combined with local knowledge, means they understand what local homes need. Their commitment to upfront pricing and around-the-clock availability makes them a practical choice for plumbing, septic, and HVAC issues. When you need a trusted partner for home systems, Harley & Duffy in Upper Marlboro, MD delivers quality work without hidden fees.
Contact Information
Harley & Duffy
: 7703 Crain Hwy, Upper Marlboro, MD 20772
Business Services
- Plumbing inspection
Business Location & Hours
| Mon: | Open 24 hours |
| Tue: | Open 24 hours |
| Wed: | Open 24 hours |
| Thu: | Open 24 hours |
| Fri: | Open 24 hours |
| Sat: | Open 24 hours |
| Sun: | Open 24 hours |



