Updated: Mar 02, 2026
Location and Projects
Address
2609 SEAMAN AVE, El Monte, CA, 91733
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L & T Air Conditioning & Heating Company Inc
L & T Air Conditioning & Heating Company Inc, 2609 Seaman Ave, El Monte, CA (Employees: Andrew Sheng Hsin Tien, Fen Chi Yan, and Ming Wai Wong) holds a Warm Air Heating, Ventilating And Air Conditioning license according to the California license board.
Their BuildZoom score of 93 ranks in the top 27% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring L & T Air Conditioning & Heating Company Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
L & T Air Conditioning & Heating Company Inc Services
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L & T Air Conditioning & Heating Company Inc Contact Information
Phone Number: (626) 425-6583
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Address: 2609 SEAMAN AVE, El Monte, CA 91733
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Building Permits by L & T Air Conditioning & Heating Company Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Install mini split system
Valuation:
N/A
Permit #:
17044-20000-12842
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Replace exist roof top fau/ac unit with new attic furnace and outside condenser. change out relocate ducting and electrical. outlets
Valuation:
N/A
Permit #:
17-0887
Status:
final
Fee:
$147
Permit Type:
N/A
Building Type:
N/A
Change out hvac change out hvac with new ducts. attic fan and 1 breaker. smoke & carbon detectors required for final
Valuation:
$0
Permit #:
B16-0164
Status:
Final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Plumbing and electric for new hvac system (see pmt2015-01197)
Valuation:
N/A
Permit #:
PMT2015-01439
Status:
final
Fee:
$169
Permit Type:
N/A
Building Type:
N/A
Mechanical for new residence
Valuation:
N/A
Permit #:
B00-053-526
Status:
expired
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mechanical for sf/new
Valuation:
$0
Permit #:
B00-047-829
Status:
complete
Fee:
$0
Permit Type:
N/A
Building Type:
N/A
New hvac system
Valuation:
N/A
Permit #:
PMT2015-01197
Status:
final
Fee:
$203
Permit Type:
N/A
Building Type:
N/A
Hvac: 13 seer 5 ton; furnace in closet
Valuation:
N/A
Permit #:
B13-1403
Status:
final
Fee:
$227
Permit Type:
HVAC
Building Type:
N/A
Electrical for air conditioning on roof
Valuation:
N/A
Permit #:
1709120055
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Gasline for hvac
Valuation:
N/A
Permit #:
1709120036
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Hvac install
Valuation:
N/A
Permit #:
13044-20000-11787
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Hvac including 5 air conditioning units (1 @ 3 tons 4 @ 4 tons) and one (1) pre-fab fireplace for new sf residence
Valuation:
N/A
Permit #:
B00-025-895
Status:
final
Fee:
$280
Permit Type:
N/A
Building Type:
N/A
One fau up to 100 000 btu one up to 3hp air conditioning one electrical a/c& compressor added one connection of equipment to a gas system
Valuation:
N/A
Permit #:
BM20060459
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
One fau up to 100 000 btu one up to 3hp air conditioning one electrical a/c& compressor added one connection of equipment to a gas system
Valuation:
N/A
Permit #:
BM20060459
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mechanical for commercial addition & tenant improvement for new dental office. ref bld2003-02359 (supplementary 12/17/2003)
Valuation:
$0
Permit #:
MEC2003-01170
Status:
Finaled
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mechanical for new house 4 hvac units as called out on plans
Valuation:
N/A
Permit #:
B00-031-896
Status:
final
Fee:
$221
Permit Type:
N/A
Building Type:
N/A
New hvac system for new residence
Valuation:
N/A
Permit #:
B00-037-040
Status:
final
Fee:
$238
Permit Type:
N/A
Building Type:
N/A
Hvac and pre-fab fireplace for new single family dwelling
Valuation:
N/A
Permit #:
B00-025-498
Status:
final
Fee:
$285
Permit Type:
Dwellings
Building Type:
N/A
Hvac and pre-fab fireplace for new sf residence
Valuation:
N/A
Permit #:
B00-018-595
Status:
final
Fee:
$227
Permit Type:
N/A
Building Type:
N/A
Fau up to 100 000 btu
Valuation:
N/A
Permit #:
80011-0069
Status:
expired
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
L & T Air Conditioning & Heating Company Inc License info
Verified License
| License # | 509737 |
| Status | Active |
| State | California |
| Type | Warm Air Heating, Ventilating And Air Conditioning |
| Business Type | Corporation |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for L & T Air Conditioning & Heating Company Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
93
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
101
Permits
- Building permit records show that L & T Air Conditioning & Heating Company Inc has worked on 101 permitted projects.
L & T Air Conditioning & Heating Company Inc Employees
AT
Andrew Sheng Hsin Tien
Rmo / Ceo / Pres
FY
Fen Chi Yan
Ceo / President
MW
Ming Wai Wong
Officer
SL
Sidun Li
Officer