Updated: Jun 01, 2026
Location and Projects
Address
11010 ARROW RTE SUITE 107, Rancho Cucamonga, CA, 91730
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Williams A / C Service HVAC/Mechanical Contractor
Williams A / C Service, 11010 Arrow Rte, Rancho Cucamonga, CA (Owned by: Eton Marcus Williams) holds a Warm Air Heating, Ventilating And Air Conditioning license and 1 other license according to the California license board.
Their BuildZoom score of 101 ranks in the top 12% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Williams A / C Service, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Williams A / C Service Contact Information
Phone Number: (909) 466-7777
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Address: 11010 ARROW RTE SUITE 107, Rancho Cucamonga, CA 91730
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Building Permits by Williams A / C Service
This is a sample of this contractor's permits. Click here to access their complete permit history.
Supplemental permit to #24044-90000-14496 to update work: (2) new hvac installation; 1.5 ton hp and 5 ton split system
Valuation:
N/A
Permit #:
24044-10001-14496
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Supplemental to permit #23044-90000-19289 change of contractor needed subtype change from single family dwelling to apartment. from: tanning hay to: williams air conditioning service (lic. #1065744)
Valuation:
N/A
Permit #:
23044-10001-19289
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Supplemental to permit #23044-90000-19288 change of contractor needed subtype change from single family dwelling to apartment. from: tanning hay to: williams air conditioning service (lic. #1065744)
Valuation:
N/A
Permit #:
23044-10001-19288
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Permit for new 3-ton air handler and condenser heat pump hvac installation for adu
Valuation:
N/A
Permit #:
MECH-24-00436
Status:
triage
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Supplemental to permit # 22044-20000-02231 to add: for church: change out 4 ton 80% gas electric rooftop packaged unit and duct replacement
Valuation:
N/A
Permit #:
22044-30001-02231
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Supplemental to permit # 22044-20000-02231 to add: for church: change out 4 ton 80% gas electric rooftop packaged unit and duct replacement
Valuation:
N/A
Permit #:
22044-30001-02231
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Run new 220 line from the existing main breaker panel to the air conditioning rooftop package unit
Valuation:
N/A
Permit #:
24041-90000-44953
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
(1) new hvac 3 ton system
Valuation:
N/A
Permit #:
24044-10000-18449
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
For church. change out gas electric packaged unit on the roof. replaced ducts
Valuation:
N/A
Permit #:
22044-20000-02231
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
For church. change out gas electric packaged unit on the roof. replaced ducts
Valuation:
N/A
Permit #:
22044-20000-02231
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
C/o 5 ton split system w disconnect & (11) ducts - same location. site plan/cf1r w permit
Valuation:
N/A
Permit #:
M23-00014
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
C/o 5 ton split system w disconnect & (11) ducts - same location. site plan/cf1r w permit
Valuation:
N/A
Permit #:
E23-00030
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Commercial mechanical. replace (e) rooftop package unit with new package unit on southeast elevation of (e) roof. 5-ton condensor 100k btu furnace with new duct work
Valuation:
$10,000
Permit #:
B1900743
Status:
final
Fee:
$234
Permit Type:
N/A
Building Type:
N/A
(3) new installation 1.5 ton hp 3 ton 5 ton split systems
Valuation:
N/A
Permit #:
24044-90000-14496
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Change out (2) 5 ton gas/electric package units (exposed ducts) with smoke sensors
Valuation:
N/A
Permit #:
21044-10000-03813
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
New installation 3 ton rooftop package unit
Valuation:
N/A
Permit #:
24044-90000-10951
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
New vav unit and partial duct work
Valuation:
N/A
Permit #:
21044-90000-03538
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Installation of (2) 2 ton ductless mini split systems
Valuation:
N/A
Permit #:
20044-90000-04452
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Install (2) package units 4 ton 5 ton. electric new ducts
Valuation:
N/A
Permit #:
20044-70000-01307
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
New installation of heating cooling/gas line and electrical
Valuation:
N/A
Permit #:
19044-70000-13146
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
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Williams A / C Service Reviews
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Verified License
BuildZoom confirmed this contractor's license
Williams A / C Service License info
Verified License
| License # | 1065744 |
| Status | Active |
| State | California |
| Type | Warm Air Heating, Ventilating And Air Conditioning |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Williams A / C Service at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 956433 |
| Status | Inactive |
| State | California |
| Type | Warm Air Heating, Ventilating And Air Conditioning |
| Business Type | Sole Ownership |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Williams A / C Service at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
101
BuildZoom Score
Bonded
| Bonded Agent | Suretec Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Norguard Insurance Company |
44
Permits
- Building permit records show that Williams A / C Service has worked on 44 permitted projects.
Williams A / C Service Employees
EW
Eton Marcus Williams
Owner
MW
Maritza Williams
Officer
MW
Maritza Williams
Officer