Updated: May 14, 2026
Location and Projects
Address
101 Radio Ln, Thurmont, MD, 21788
Use our bidding system to
request a quote
Cornerstone Heating & Air Conditioning, Inc
Cornerstone Heating & Air Conditioning, Inc, 101 Radio Ln, Thurmont, MD holds a Heating, Ventilation, Air Conditioning And Refrigeration license according to the Maryland license board.
Their BuildZoom score of 98 ranks in the top 16% of 58,058 Maryland licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Cornerstone Heating & Air Conditioning, Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Cornerstone Heating & Air Conditioning, Inc Services
Start a project today:
Cornerstone Heating & Air Conditioning, Inc Contact Information
Phone Number: (240) 674-3100
Address: 101 Radio Ln, Thurmont, MD 21788
Building Permits by Cornerstone Heating & Air Conditioning, Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Request for mechanical permit for install a mitsubishi 15,000 btu ductless heat pump in new sun room addition on the backside of the garage.
Valuation:
$4,100
Permit #:
MECH-15648-2018
Status:
final
Fee:
N/A
Permit Type:
Residential
Building Type:
N/A
Request for mechanical permit for install a mitsubishi 15, 000 btu ductless heat pump in new sun room addition on the backside of the garage
Valuation:
$4,100
Permit #:
MECH-15648-2018
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Adding ductless mini split system for conditioning antietam estates section a lot 6
Valuation:
N/A
Permit #:
2018-05182
Status:
complete
Fee:
$120
Permit Type:
N/A
Building Type:
N/A
Single family dwelling addition install hvac system energy code prescriptive method
Valuation:
N/A
Permit #:
M15000247
Status:
complete
Fee:
$94
Permit Type:
N/A
Building Type:
N/A
Addition heat pump coil to existing gas furnace addition 1 supply and 1 return line for addition
Valuation:
N/A
Permit #:
M-20140832
Status:
complete
Fee:
N/A
Permit Type:
Mechanical reside...
Building Type:
N/A
Replace two existing 2 ton heat pump systems with two new r-410a heat pumps
Valuation:
N/A
Permit #:
2011-01687
Status:
complete
Fee:
$115
Permit Type:
N/A
Building Type:
N/A
Replace furnace only
Valuation:
N/A
Permit #:
M-20120281
Status:
complete
Fee:
N/A
Permit Type:
Mechanical reside...
Building Type:
N/A
Replace 5 ton air conditioning for 1st floor/basement and 25 ton air conditioning outdoor unit & custom replace. indoor coil in attic
Valuation:
N/A
Permit #:
M-20181795
Status:
expired
Fee:
N/A
Permit Type:
Mechanical commer...
Building Type:
N/A
Cornerstone Heating & Air Conditioning, Inc Reviews
BuildZoom hasn't received any reviews for Cornerstone Heating & Air Conditioning, Inc. Click here to be alerted when reviews are posted about them.
Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Cornerstone Heating & Air Conditioning, Inc License info
Verified License
| License # | 6477 |
| Status | Active |
| State | Maryland |
| Type | Heating, Ventilation, Air Conditioning And Refrigeration |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Cornerstone Heating & Air Conditioning, Inc at the Maryland Department of Labor, Licensing & Regulation.
This is a sample of licensing data; click here to access a complete history.
98
BuildZoom Score
7
Permits
- Building permit records show that Cornerstone Heating & Air Conditioning, Inc has worked on 7 permitted projects.