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Maryland's Most-Trusted HVAC Company

Schedule reliable HVAC services in Pylesville, MD, Delta & Susquehanna Trails, PA

Old Line Heating and Air provides a wide variety of HVAC services to residents of Pylesville, MD, Delta & Susquehanna Trails, PA and surrounding areas. If you need an energy-efficient central AC system installed, an outdated furnace replaced or faulty ductwork repaired, our experienced HVAC technicians can handle it. You can also trust us to test the quality of the air in your home and suggest ways to improve it.

Call 410-896-7480 now to schedule reliable air conditioning installation or indoor air quality testing services. We complete HVAC installations on time, every time.



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5 great reasons to choose Old Line Heating and Air

Old Line Heating and Air offers all kinds of AC and heating installation services in the Pylesville, MD and Delta, PA area. You should make us your go-to HVAC company because:


We are fully licensed and insured


We have over 15 years of experience


We provide 24/7 emergency HVAC repair services


We offer annual HVAC maintenance plans


We install and repair ductwork

Contact us today to arrange for duct installation or HVAC repair services. We install quality HVAC systems manufactured by Rheem, Bosch, Burnham and Fujitsu.

Extend the life of your HVAC system

Old Line Heating and Air completes HVAC installations and offers annual HVAC maintenance plans. You can trust us to inspect your HVAC system once a year and repair minor issues before they turn into serious problems. Annual HVAC maintenance can:

  • Extend the life of your HVAC system
  • Help reduce your energy bills
  • Improve your indoor air quality
  • Save you money in the long run


Get reliable HVAC services by calling 410-896-7480 right away.