Gunpowder Mechanical Services LLC

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Claim This BusinessAbout Gunpowder Mechanical Services LLC
Gunpowder Mechanical Services LLC operates as a licensed air conditioning contractor serving Joppatowne and surrounding Harford County communities. The business maintains a perfect 5.0-star rating across 17 client reviews, indicating consistent service quality. Their team holds MD STATE HVACR license 85558 and MD STATE Plumbing/Gas license 78238, qualifying them for both heating-cooling and gas plumbing work in Maryland. Operating hours span Monday through Friday from 7 AM to 4 PM, with Saturday availability from 8 AM to noon.
The contractor differentiates itself through comprehensive maintenance programs designed to prevent system failures before they occur. Their service agreements cover both HVAC and plumbing systems, offering homeowners scheduled upkeep and priority response. The company responds to emergency calls, with documented cases of same-day or next-morning arrival during critical situations like gas leaks or heating failures. Technicians provide education during each visit, explaining system operation and answering homeowner questions.
Multiple reviewers highlight technician Matt as the primary contact, noting his responsiveness during after-hours emergencies. One reviewer describes a winter night call when the fire department shut off their furnace due to a gas leak, and Matt arrived by 8 AM the following morning to diagnose the issue. Another reviewer recounts a heating and AC replacement project, praising both technical skill and personable approach. A third client with rental properties mentions consistent on-time arrivals and fair pricing, indicating the company's reliability extends beyond one-time service calls.
What Customers Say
All 17 published reviews award 5 stars, with seven specific testimonials mentioning technician Matt by name and describing scenarios ranging from emergency gas leak response to full system replacements. Reviewers note fair pricing and on-time arrivals as recurring themes across both residential and rental property jobs.
Working Hours
| Sunday | Closed |
| Monday | 7 AM–4 PM |
| Tuesday | 7 AM–4 PM |
| Wednesday | 7 AM–4 PM |
| Thursday | 7 AM–4 PM |
| FridayToday | 7 AM–4 PM |
| Saturday | 8 AM–12 PM |
Services
AC Repair & Maintenance
Diagnose and repair cooling system failures, perform seasonal tune-ups to maintain efficiency and extend equipment life.
Heating System Service
Repair furnaces and boilers, address heating failures and gas-related safety concerns in existing equipment.
Plumbing Installation & Repair
Replace water heaters, install gas lines for appliances, handle basic plumbing repairs and upgrades.
Emergency Response
Available for urgent calls includinggas leaks, heating failures, and other systems threatening home safety.
System Replacement
Install new heating and cooling systems, replace aging AC units with modern efficient equipment.
Maintenance Agreements
Scheduled service plans covering both HVAC and plumbing, prioritizing agreement holders for response.