JDL HVAC SERVICES LLC

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, 86% are HVAC work.

HVAC 12

Plumbing 2

Typical job observed: 90,000 BTU.

Each county's permit system holds only their own records, so the combined view above exists nowhere else.

Recent work

• HVAC replacement
  July 2026 · Anne Arundel County

  Replacing existing Heating and Air Conditioning System

• HVAC install
  April 2026 · Anne Arundel County

  Installation of heating and air conditioning system.

• Plumbing replacement 150,000 BTU
  June 2025 · Howard County

  Replacing existing Gas Fired Boiler with a Columbia Boiler CSVB-5 Columbia, Columbia CSVB Series 3 Gas Fired Hot Water …

• Furnace replacement 2 tons
  October 2024 · Howard County

  Replacing existing heating and air conditioning system with a Carrier 70k BTU 80% Furnace (Model#58SB0B070) with a Nati…

• Furnace replacement 90,000 BTU
  August 2024 · Howard County

  Replacing existing Heating and Air Conditioning System Bryant 800SA48 Furnace 90,000 BTU with an 115SAN AC 3 Ton and Co…

• Plumbing install 100,000 BTU
  January 2024 · Howard County

  Replacing existing gas boiler and installating an weil mclain cga-4 100,000 BTU gas boiler, 1-resideo bp900 (bfp)

• Furnace replacement
  November 2023 · Howard County

  Replacing existing heating and air conditioning system with a Carrier 100k BTU 90% Furnace (Model#59SC2D100) with a Car…

• Furnace install
  November 2023 · Howard County

  Installing of an Carrier Comfort 110.000 BTU Gas Furnace (Model #58SB0A110E21) with an Carrier Comfort 3 Ton 15 SEER Ai…

• Furnace install 90,000 BTU
  October 2023 · Howard County

  Reconnecting existing gas line to new furnace. Carrier Comfort 58SBO 90,000 BTU

• Furnace replacement 60,000 BTU
  October 2023 · Howard County

  Replacing existing Heating and Air Conditioning System Carrier Comfort 59SC2D Furnace 60,000 BTU with an 24SCA5 AC 3 To…

Licensing

• Maryland HVACR Contractor Issued by Maryland Board of Heating, Ventilation, Air Conditioning and Refrigeration. Verify
• Master Plumber and Gas Fitter Issued by Maryland Board of Plumbing. 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.

Permits by year

Our records for this contractor's counties begin August 2021. Years before that are not shown because we hold nothing for them, not because nothing happened.

What this page is, and is not

• Howard County: 11 permits observed, from records beginning August 2021.
• Anne Arundel County: 3 permits observed, from records beginning December 2025.

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 JDL HVAC SERVICES LLC under Maryland HVACR Contractor, Master Plumber and Gas Fitter. 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