15881 Commerce Ct
Upper Marlboro, MD 20774-7407
301 249 0300

Local Reviews

Rated 4.9 out of 5 stars based on 5220 customer reviews

Great service

Thank you Mark S. for your excellent service today. Mark tuned up my gas fireplace and did a season check of my HVAC system. Very professional.

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Great Experience

Service representative was prompt, friendly, professional, knowledgeable and thorough. He answered all my questions without hesitation.

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Great service!

We have used Belair Engineering for our annual gas fireplace maintenance and are very satisfied with them. Mark, our service person today, has been here before and always does an excellent job with the maintenance needed for our fireplace. He also gives us a few tips along the way. We highly recommend Belair Engineering!

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Class Act

Belair is excellent every time! Always friendly, competent, timely service.

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Fantastic Service

Anthony is our long time service provider from Bel Air. He is extremely professional and thorough. We appreciate Bel Air addressing our concerns during this crazy pandemic and providing us with a great technician who cares about the well being of Bel Air customers. We have our toddler and my senior citizen mon so Safety has been our top priority during the pandemic and especially since our toddler is unable to be vaccinated. Anthony wears an N95 mask when he comes to our home and is prepared abs provides us with top notch service every time. He answers our questions and is detail oriented. We appreciate Bel Air very much. You all are lucky to have Anthony on your A Team!

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Excellent Service

Gas fireplace needed annual inspection. Mark from Belair Engineering did an excellent job. I continue to be very happy with Belair Engineering and their total service.

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Great Service

Mark did a terrific job!!!

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Great Service

The technician did everything correctly. He was on-time, courteous and professional. We are very pleased.

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Prompt and friendly service.

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Fantastic Service

Technician was very knowledgeable, polite and professional!

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Job Locations

Abe A.

Abe A. Job Checkin

Heating tune up

Heating tune up

Santos M.

Santos M. Job Checkin

Ac repairs

Ac repairs

Abe A.

Abe A. Job Checkin

No cool air

No cool air

Brendan B.

Brendan B. Job Checkin

Repairs to the loo

Repairs to the loo

Abe A.

Abe A. Job Checkin

No ac

No ac

Michael B.

Michael B. Job Checkin

Carrier gas boiler installation

Carrier gas boiler installation

Anthony B.

Anthony B. Job Checkin

Gas furnace repair

Gas furnace repair

JJ O.

JJ O. Job Checkin

Gas fireplace


Diego M.

Diego M. Job Checkin

Carrier gas furnace services

Carrier gas furnace services

Brendan B.

Brendan B. Job Checkin

Plumbing eval

Plumbing eval

Brendan B.

Brendan B. Job Checkin

Spigot eval

Spigot eval

Abe A.

Abe A. Job Checkin

Heating tune up

Heating tune up

Sam M.

Sam M. Job Checkin

Lennox Heat Pump Maintenance repair services

Lennox Heat Pump Maintenance repair services

Santos M.

Santos M. Job Checkin

Generator repairs

Generator repairs

Jose S.

Jose S. Job Checkin