Updated: May 20, 2026
Location and Projects
Address
12812 KNOTT STREET, Garden Grove, CA, 92841
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Stephan Refrigeration HVAC/Mechanical Contractor
Stephan Refrigeration, 12812 Knott St, Garden Grove, CA (Employee: Hung Xuan Nguyen) holds a Refrigeration, Warm Air Heating, Ventilating And Air Conditioning license according to the California license board.
Their BuildZoom score of 105 ranks in the top 8% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Stephan Refrigeration, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Stephan Refrigeration Contact Information
Phone Number: (714) 894-6500
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Address: 12812 KNOTT STREET, Garden Grove, CA 92841
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Building Permits by Stephan Refrigeration
This is a sample of this contractor's permits. Click here to access their complete permit history.
(n) 2-ton hvac system with ducting (see eng calcs); incld condensing unit on rooftop& evaporator hung in ceiling above t-bar *** han lt hoang md pc dba aureum aesthetics ***
Valuation:
N/A
Permit #:
C2025-004650
Status:
pending document
Fee:
$1,798
Permit Type:
N/A
Building Type:
N/A
***code case - cv2023-01647*** r/r 2 (e) heat pump units in side yard ***cheers # 424-a020005631a*** ***30” setback to property line required for heat pump units***
Valuation:
N/A
Permit #:
M2024-000245
Status:
triage
Fee:
$424
Permit Type:
N/A
Building Type:
N/A
(e-plan) replace existing air conditioning and furnace within common walls. (1) duct. no penetration to shared walls. like for like same location
Valuation:
N/A
Permit #:
00933393-AC
Status:
final
Fee:
$328
Permit Type:
N/A
Building Type:
N/A
Change out existing walk-in cooler & walk-in freezer box only no new equipment unit 6
Valuation:
$30,000
Permit #:
22-5502
Status:
final
Fee:
$932
Permit Type:
N/A
Building Type:
N/A
Commercial building permit - ref mec18-00155 construction of new pad for 6-ton hvac system (roof-top) hers testing required for refrigerant charge duct testing required if greater than 40 ft per approved plans
Valuation:
N/A
Permit #:
BLD18-01352
Status:
final
Fee:
$527
Permit Type:
N/A
Building Type:
N/A
Relocate fau to attic install new air conditioning with disconnect switch and 8 registers
Valuation:
N/A
Permit #:
M21-00140
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Relocate fau to attic install new air conditioning with disconnect switch and 8 registers
Valuation:
N/A
Permit #:
E21-00324
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Hvac-new replace air conditioning unit. install 3 ton package heat pump/three phrase/208-230v
Valuation:
$8,500
Permit #:
B20-000-143
Status:
issued
Fee:
$295
Permit Type:
Value
Building Type:
N/A
Electrical. to install (2) air conditioning disconnects
Valuation:
N/A
Permit #:
E2021-003178
Status:
final
Fee:
$131
Permit Type:
N/A
Building Type:
N/A
R/r 2 (e) air conditioning units 2 (e) furnaces & ducting in same locations cf1r -221-a020059874a
Valuation:
N/A
Permit #:
M2021-001721
Status:
final
Fee:
$341
Permit Type:
N/A
Building Type:
N/A
Hvac-mod modify existing air duct. change new package hvac install mini split ductless heatpump
Valuation:
$18,000
Permit #:
B19-001-181
Status:
final
Fee:
$452
Permit Type:
B business
Building Type:
N/A
Mechanical to remove and replace air conditioning unit f.a.u with (6) ducts being replaced and electrical
Valuation:
N/A
Permit #:
BLD2017-02672
Status:
final
Fee:
N/A
Permit Type:
Residential remodel
Building Type:
N/A
New hvac machines
Valuation:
N/A
Permit #:
C2024-000129
Status:
canceled
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Change out air conditioning condenser unit with coil & fau c/o - same location (no ducts) calcerts: 218-a020120412a entered by: floresa
Valuation:
N/A
Permit #:
M2018-002663
Status:
final
Fee:
$186
Permit Type:
N/A
Building Type:
N/A
Mechanical and electrical: install new air conditioner and disconnect. fau change out
Valuation:
N/A
Permit #:
BLD2017-01422
Status:
final
Fee:
N/A
Permit Type:
Miscellaneous
Building Type:
N/A
Install new air conditioning and fau
Valuation:
N/A
Permit #:
2207-075
Status:
issued
Fee:
$567
Permit Type:
N/A
Building Type:
N/A
New slim duct system; 3 ton 14 seer condenser located in side yard; 7 ducts
Valuation:
N/A
Permit #:
18-3047
Status:
final
Fee:
$274
Permit Type:
N/A
Building Type:
N/A
Growers direct flowers inc. remove and replace collapsed flex duct work with spiral metal duct work and install walk in cooler. mechanical: refrigeration unit repair/alter. ref: e15-00192 p15-00119
Valuation:
N/A
Permit #:
M15-00100
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Growers direct flowers inc. replace t8 fixtures with t5 fixtures. 14 fixtures. 1 3-way switch. 2 circuit breakers. ref: m15-00100 p15-00119
Valuation:
N/A
Permit #:
E15-00192
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Growers direct flowers inc. remove and replace broken.clogged 2 sanitary sewer line. ref: m15-00100 e15-00192
Valuation:
N/A
Permit #:
P15-00119
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
Stephan Refrigeration License info
Verified License
| License # | 658149 |
| Status | Active |
| State | California |
| Type | Refrigeration, 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 Stephan Refrigeration at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
105
BuildZoom Score
Bonded
| Bonded Agent | Platte River Insurance Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Farm General Insurance Company |
62
Permits
- Building permit records show that Stephan Refrigeration has worked on 62 permitted projects.
Stephan Refrigeration Employees
HN
Hung Xuan Nguyen
Sole Owner