Updated: Feb 05, 2026
Location and Projects
Address
1835 Hamlet St, San Mateo, CA, 94403
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Air Temp Co Photos
Air Temp Co Construction
Established in 1985
Our company originally provided repair services in the major appliances and moved to refrigeration controls. Now we offer a wide range of services from residential to commercial equipment HVAC – Heating, Air Conditioning & Refrigeration.
We are fully licensed and insured in several trades which demonstrates our ability to solve many problems. We can repair anything and on some occasions, we would recommend a cost-effective approach to replacement.
From BuildZoom: Air Temp Co , 1835 Hamlet St, San Mateo, CA (Owned by: Marco Antonio Maldonado) holds a Warm Air Heating, Ventilating And Air Conditioning, Refrigeration, General Building, Electrical, Solar license according to the California license board.
Their BuildZoom score of 97 ranks in the top 18% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Air Temp Co , we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Air Temp Co Contact Information
Phone Number: (650) 591-1004
Address: 1835 Hamlet St, San Mateo, CA 94403
Building Permits by Air Temp Co
This is a sample of this contractor's permits. Click here to access their complete permit history.
Replaced existing electrical rooftop disconnect with same type and size for new air conditioning unit. hvac permit 21044-10001-00038 has been inspected in conjunction with this permit
Valuation:
N/A
Permit #:
21041-30000-03157
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Replacing existing air conditioning unit with a new air conditioning unit of the same cooling capacity
Valuation:
N/A
Permit #:
20044-90000-09716
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Replace furnace
Valuation:
$3,402
Permit #:
MEP2019-00760
Status:
expired
Fee:
$349
Permit Type:
N/A
Building Type:
N/A
# scanned # furnace; remove wall furnace and install new central furnace. 80% efficiency 70 000 btu. new duct work. hers testing required
Valuation:
N/A
Permit #:
BLD2016-00076
Status:
final
Fee:
$305
Permit Type:
N/A
Building Type:
N/A
Supplemental permit to collect fees for 08044 20000 11978________ (1) additional inspection(s) per inspection notice # _________or date__02/06/2009____. this permit does not authorize any additional work or extend the expiration date of the original permit
Valuation:
N/A
Permit #:
08044-20001-11978
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Rooftop gas package air conditioning system (hvac) replace existing unit with same size and type and 1 air handler
Valuation:
N/A
Permit #:
21044-30000-00038
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Supplemental permit to 21044-30000-00038 to correct the owner's information. no fee department error
Valuation:
N/A
Permit #:
21044-10001-00038
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Replace furnace
Valuation:
$7,000
Permit #:
M2018-0018
Status:
final
Fee:
$160
Permit Type:
Mechanical
Building Type:
N/A
Apartment #720: furnace replacement in the same location
Valuation:
N/A
Permit #:
15000-02547
Status:
final
Fee:
$120
Permit Type:
N/A
Building Type:
N/A
Photovolatic system on roof of single family dwelling including service panel upgrade to 225a. contact joy at 775-230-5919 when ready for pickup
Valuation:
N/A
Permit #:
12041-20000-00932
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
New furnace and air conditioning. fau moved to the attic. air conditioning. condensor is approved for rear yard
Valuation:
N/A
Permit #:
2016 114524 RS
Status:
final
Fee:
N/A
Permit Type:
Single family
Building Type:
N/A
200a electrical panel upgrade only
Valuation:
N/A
Permit #:
14041-90000-06979
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
200 amp service upgrade
Valuation:
N/A
Permit #:
13041-20000-30007
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Replace new furnace
Valuation:
$0
Permit #:
PM20140218281
Status:
COMPLETE
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace furnace
Valuation:
N/A
Permit #:
MEP2013-00425
Status:
final
Fee:
$149
Permit Type:
(mech) replace HVAC
Building Type:
N/A
Upgrade and move main panel 200 amps
Valuation:
N/A
Permit #:
13041-20000-06562
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Extra trip for smoke detector test. suppl. permit from original permit #01044-10000-12066
Valuation:
N/A
Permit #:
01044-10001-12066
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Replace furnace in same location and air conditioning in same location
Valuation:
N/A
Permit #:
BLD2014-01074
Status:
final
Fee:
$139
Permit Type:
N/A
Building Type:
N/A
Change out of fan coil units and condensors like for like and new smoke detectors
Valuation:
N/A
Permit #:
01044-10000-12066
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Replace (e) furnace in same location in hall closet
Valuation:
$2,800
Permit #:
MH-2017-264945
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
Air Temp Co License info
Verified License
| License # | 889684 |
| Status | Active |
| State | California |
| Type | Warm Air Heating, Ventilating And Air Conditioning, Refrigeration, General Building, Electrical, Solar |
- BuildZoom verified this license was active as of February 2026.
Verify this license's status for Air Temp Co at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
97
BuildZoom Score
Bonded
| Bonded Agent | Western Surety Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Siriuspoint America Insurance Company |
42
Permits
- Building permit records show that Air Temp Co has worked on 42 permitted projects.
Air Temp Co Employees
MM
Marco Antonio Maldonado
Owner