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Claim This BusinessAbout Old Line Heating and Air
Old Line Heating and Air delivers heating and cooling solutions across portions of Pennsylvania and Maryland, earning a perfect 5.0-star rating from 274 verified client reviews. The contractor maintains an active presence in neighborhoods served through offices in both states, with dedicated phone lines connecting homeowners directly to dispatch. Service coverage extends to Harford County, Baltimore County, York County, and Lancaster County in Pennsylvania, alongside corresponding regions in Maryland.
The company distinguishes itself through comprehensive equipment offerings that include high-velocity systems, ductless split configurations, radiant floor heating, and tankless boiler installations, capabilities not commonly found among standard residential contractors. Their Air Quality Testing division addresses mold remediation, filtration upgrades, and remediation of animal remains trapped in ductwork, a specialized niche that prevents ongoing air contamination. The business also provides commercial HVAC maintenance programs structured for ongoing system reliability.
Customer accounts consistently highlight rapid response during temperature emergencies. One reviewer described a technician arriving within three hours of a morning call on a frigid day, diagnosing a failed heating system and restoring warmth within thirty minutes. Another account detailed Kevin, a technician, traveling twice on a Saturday during a cold snap to attempt repairs before recommending a full system replacement with financing options explained transparently.
What Customers Say
All five featured reviewers assigned five stars, with three specifically naming technicians: Kevin received recognition for thorough repairs and customer education, James for same-day arrival combined with fair pricing, and Dave for early arrival before his scheduled time. Four accounts emphasize prompt service ranging from same-day visits to same-afternoon appointments, while one detailed appreciation for transparent recommendations without upselling.
Services
Air Conditioning Installation and Maintenance
Central air, ductless split systems, high-velocity systems, and refrigerants for ongoing cooling performance.
Heating System Installation and Repair
Furnace repair, boiler installations, heat pump service, radiant floor heat, and emergency heating responses.
Ductwork Design and Fabrication
Custom square and round ductwork for new construction, retrofitting, sealing, and system testing.
Air Quality Testing and Remediation
Filter replacements, mold and bacteria cleanup, odor removal, and animal remains extraction from ductwork.
Plumbing and HVAC Combination Services
Water heater repairs and installations including tankless boiler options for integrated home comfort.