Heating And Cooling services in MD & PA

Our Services

Trust An Experienced Local Company To Bring Heating and Cooling Services To Your Home

Looking for reliable heating and cooling services? Old Line Heating & Air has got you covered! Our certified technicians offer top-notch HVAC solutions for your home or business. We install new air conditioning and heating systems including ductless systems. We install tankless water heating systems as well. We also offer maintenance services on all types of hvac systems. Keep your indoor comfort at its best with our services.

At Old Line Heating & Air, we focus on your family’s comfort. Our technicians have decades of experience in commercial and residential services. We can provide solutions to optimize your HVAC performance and save on costs. Contact us today for dependable and efficient heating and cooling services.

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Heating And Cooling Services In Md And Pa

Air Conditioning Installation

Air conditioning installation & maintenance is what we do.

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Hvac Repair Service

Heating Installation

Dependable & efficient heating services.

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Adobestock 348217260

Air Quality Testing & Service

Breathe cleaner after our indoor air quality testing.

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Ductwork In A Residential Space

Ductwork Installation

Duct installation services for residential & commercial.

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Heating And Air Repair And Installation In Md And Pa

Maintenance Plans

Keep your hvac running smoothly with our maintenance plans.

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Maryland & Pennsylvania’s Most-Trusted HVAC Company

Old Line Heating and Air provides a wide variety of HVAC services to residents of Maryland & Pennsylvania. If you need an energy-efficient central AC system installed, an outdated furnace replaced or faulty ductwork repaired, our experienced HVAC technicians can handle it.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.

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 Harford County, MD 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.

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See Why Our Customers Love Us

Old Line has been to our house a few times, most recently they discovered we had duct issues. The repair was faster than they originally thought and now not even 24hrs later it is feeling much better in our home. Can’t say enough good things.
Stephanie Wolf
My wife contacted them. They came out very professional and we decided on a new unit. Price was very fair. We already had estimates. One week later unit was installed and now very comfortable. Excellent communication, professional and fair prices.
George Dressel
Old Line came for a leak in my water heater. Not only was the fix cleanly done, but he explained what he was doing every step of the way. Really appreciated the honest service and pricing – would strongly recommend!
Samir Kalavar