GAITHERSBURG A/C & HEATING, INC. (DBA GAC SERVICES

Permits are pulled before work begins and then inspected by the county. A contractor who files them is working inside a system with an inspector in it, which is what unpermitted work avoids.

What the permits show

Of the permits we observed, 83% are HVAC work.

HVAC · 5Plumbing · 1

Recent work

• Heat pump install
  September 2025 · Howard County

  Replacement of a heat pump only

• Furnace replacement
  August 2025 · Howard County

  Replacement of a furnace & AC unit

• Plumbing replacement
  August 2025 · Howard County

  Replacement of an AC unit a coil

• Furnace install
  July 2025 · Howard County

  Relacing a full system AC, coil & furnace

• Furnace replacement 3 tons
  June 2025 · Howard County

  To replace 70K furnace with 3T AC unit and 3T coil in basement. lennox slp99uh070xv36b, sl25kcv-036, ck40ct-36b & s40

• Furnace replacement 3.5 tons
  June 2025 · Howard County

  To replace 80K furnace with 3.5t AC unit and 4T coil. carrier 59tp6c080v17--16, carrier 26sca542w003, carrier cvava4821…

Licensing

• Maryland HVACR Contractor Issued by Maryland Board of Heating, Ventilation, Air Conditioning and Refrigeration. Verify

Towns we observed them working in

We hold permit records for Anne Arundel County, Baltimore City, Baltimore County, Carroll County, Frederick County, Howard County, Prince George's County, and Washington DC. Work anywhere else is not missing from this contractor's record, it is outside what we cover.

What this page is, and is not

• Howard County: 6 permits observed, from records beginning August 2021.

This page shows permits we observed in county records. Our observation is not complete: work done before those dates, in counties we do not cover, or on filings that name no contractor does not appear here. A contractor's real work is almost always greater than what we observed, and absence of a permit on this page does not mean the work was not done or not permitted. We currently hold records for Anne Arundel County, Baltimore City, Baltimore County, Carroll County, Frederick County, Howard County, Prince George's County, and Washington DC; see permit coverage for what that includes.

Common questions

Does a permit record mean this contractor is licensed?

County permit records list GAITHERSBURG A/C & HEATING, INC. (DBA GAC SERVICES under Maryland HVACR Contractor. Check current standing with the issuing body before hiring.

Why do some contractors show more permits than others?

Counties began publishing at different times and describe contractors differently, so the number reflects what we observed as much as what the contractor did. It is not a ranking.

What should I still ask for?

Proof of insurance, a written contract, and the license number for the trade being performed. A permit record is a starting point, not a substitute for either.

Other HVAC contractors in Howard County