Updated: Feb 05, 2026
Location and Projects
Address
1040 COMMERCIAL ST STE 104, San Jose, CA, 95112
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DG Heating & Air Conditioning
DG Heating & Air Conditioning, 1040 Commercial St, San Jose, CA (Employees: John Lloyd Gardner, Michael Alan D'angelo, and Michael Alan D'angelo Jr) holds a Warm Air Heating, Ventilating And Air Conditioning, Solar, Electrical license and 1 other license according to the California license board.
Their BuildZoom score of 118 ranks in the top 1% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring DG Heating & Air Conditioning, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
DG Heating & Air Conditioning Contact Information
Phone Number: (408) 201-9411
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Address: 1040 COMMERCIAL ST STE 104, San Jose, CA 95112
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DG Heating & Air Conditioning San Jose
Quality
118
99th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
DG Heating & Air Conditioning has a BuildZoom score of 118, which places them above 99% of 336,931 contractors in California.
Activity
|
40 projects
|
2025 |
|
33 projects
|
2024 |
|
38 projects
|
2023 |
Our building permit records indicate that DG Heating & Air Conditioning has worked on at least
111.0 projects over the past 3 years.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Experience
|
33 projects
|
New Constructions |
|
15 projects
|
Home Additions |
|
108 projects
|
HVAC projects |
|
15 projects
|
Mechanical projects |
Analyzing permits over the last 4 years shows that DG Heating & Air Conditioning mostly works on
hvac project
and new construction
projects.
Pricing
|
21 projects
|
$5k-$20k |
|
3 projects
|
$20k-$50k |
|
1 project
|
$50k-$100k |
|
1 project
|
$250k-$500k |
The typical size of their permits is approximately $10,000. This graph shows the distribution of these job values.
Pro tip:
For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.
Building Permits by DG Heating & Air Conditioning
This is a sample of this contractor's permits. Click here to access their complete permit history.
Mep: hvac & duct replacements (n) electrical + panels
Valuation:
$355,000
Permit #:
BLD25-0098
Status:
final
Fee:
$8,999
Permit Type:
Hv/AC
Building Type:
N/A
Work category: 1m; install a mitsubishi three zone system including 1 ducted indoor air handler 1 ductless indoor air handler & 1 outdoor heat pump. replace ductwork
Valuation:
N/A
Permit #:
PMW20250414507
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1m; install a mitsubishi two zone system including 1 ducted indoor air handler 1 ductless indoor air handler & 1 outdoor heat pump
Valuation:
N/A
Permit #:
PMW20250414505
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
A single family residence to remove existing 2 furnaces & ac's and replace with 2 (n) air handler's & heat pump's replce ductwork approx 225 ft.(electrification: changing from gas to electric) one in garage and one in attic
Valuation:
$52,000
Permit #:
LPC2025-02287
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace ductwork for upstairs system ductwork only 12 supplies and 2 returns (no heating or cooling equipment being replaced)
Valuation:
$13,293
Permit #:
M25-043
Status:
issued
Fee:
$262
Permit Type:
N/A
Building Type:
N/A
Revised to heat pump water heater electric and adding gas line extension for capping gas line. - 3/16/23 - kp. remove existing water heater cap gas line install (n) heat pump water heater in same location as existing water heater
Valuation:
N/A
Permit #:
2023 089583 RS
Status:
final
Fee:
N/A
Permit Type:
Single-family
Building Type:
N/A
- unpermitted cutout in exterior wall for air conditioning wall unit - replace (e) air conditioning with ductless mini-split
Valuation:
N/A
Permit #:
2025 110994 MF
Status:
issued
Fee:
N/A
Permit Type:
Condo
Building Type:
N/A
- r/r furnace with heat pump **revision to permit #24-103019 furnace is being replaced by heat pump ** 938 on permit #24-103019
Valuation:
N/A
Permit #:
2025 090899 MF
Status:
final
Fee:
N/A
Permit Type:
Condo
Building Type:
N/A
Install indoor air handler in place of existing furnace in garage. addition (n) outdoor heat pump
Valuation:
$16,400
Permit #:
BLD25-01512
Status:
final
Fee:
$495
Permit Type:
N/A
Building Type:
N/A
Addition (n) single zone ductless mini-split system (includes 1 outdoor heat pump and 1 indoor air handler)
Valuation:
N/A
Permit #:
BLD2025-00424
Status:
final
Fee:
$386
Permit Type:
N/A
Building Type:
N/A
Remove existing furnace cap gas line. install (n) indoor air handler & outdoor heat pump
Valuation:
$17,000
Permit #:
BLD2025-06039
Status:
complete
Fee:
$155
Permit Type:
N/A
Building Type:
N/A
Addition (n) electrical components only for the hvac installation of permit #pmw20250414505
Valuation:
N/A
Permit #:
EW202504215791
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Addition (n) electrical components only for the hvac installation of permit #pmw20250414507
Valuation:
N/A
Permit #:
EW202504215789
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Electrification.a single family resdience to addition (n) heat pump system (includes 1 outdoor heat pump 1 ducted indoor air handler & 2 ductless indoor air handlers)
Valuation:
$10,000
Permit #:
LPC2023-00994
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove existing furnace. install (n) indoor air handler in same location as existing furnace. addition (n) outdoor heat pump. replace ductwork. the new system is being installed in the garage and it is electric. the ducting is going on the roof
Valuation:
$10,000
Permit #:
MEP-2023-289899
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
See bld25-03016 install (n) ductless heat pump system in the main residence (includes: 1 outdoor heat pump & 1 ductless air handler)
Valuation:
$7,000
Permit #:
BLD25-03282
Status:
canceled
Fee:
$512
Permit Type:
N/A
Building Type:
N/A
Remove existing furnace cap gas line. install (n) ductless heat pump system (includes 1 outdoor unit and 4 indoor units)
Valuation:
$10,000
Permit #:
M24-202
Status:
final
Fee:
$213
Permit Type:
N/A
Building Type:
N/A
Replace two furnace/ac systems with heat pump systems one for 2nd floor(attic) and one for main floor(crawlspace)
Valuation:
N/A
Permit #:
M24-175
Status:
final
Fee:
$259
Permit Type:
N/A
Building Type:
N/A
Remove existing furnace cap gas line. install (n) ductless heat pump system (includes 1 outdoor unit and 4 indoor units)
Valuation:
N/A
Permit #:
PRE24-00992
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove existing hvac system and ductwork. install (n) indoor air handler outdoor heat pump and ductwork
Valuation:
$10,000
Permit #:
LPC2024-02140
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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DG Heating & Air Conditioning Reviews
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Verified License
BuildZoom confirmed this contractor's license
DG Heating & Air Conditioning License info
Verified License
| License # | 1035345 |
| Status | Active |
| State | California |
| Type | Warm Air Heating, Ventilating And Air Conditioning, Solar, Electrical |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of February 2026.
Verify this license's status for DG Heating & Air Conditioning at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 928315 |
| Status | Active |
| State | California |
| Type | Warm Air Heating, Ventilating And Air Conditioning, Solar |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of January 2026.
Verify this license's status for DG Heating & Air Conditioning at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
118
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Oak River Insurance Company |
601
Permits
- Building permit records show that DG Heating & Air Conditioning has worked on 601 permitted projects.
DG Heating & Air Conditioning Employees
JG
John Lloyd Gardner
Officer
MD
Michael Alan D'angelo
Sole Owner
MJ
Michael Alan D'angelo Jr
Rmo / Ceo / Pres