Updated: May 02, 2026
Location and Projects
Address
18530 PARTHENIA ST, Northridge, CA, 91324
Use our bidding system to
request a quote
Air Conditioning & Heating Mechanical Masters
Air Conditioning & Heating Mechanical Masters, 18530 Parthenia St, Northridge, CA (Employees: Bruce Howard Downs, Eric Robert Downs, and Joan Barbara Downs) holds a Warm Air Heating, Ventilating And Air Conditioning license and 1 other license according to the California license board.
Their BuildZoom score of 110 ranks in the top 4% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Air Conditioning & Heating Mechanical Masters, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Air Conditioning & Heating Mechanical Masters Contact Information
Phone Number: (818) 378-4574
Edit
Address: 18530 PARTHENIA ST, Northridge, CA 91324
Edit
Do you work for this business? Unlock this free profile to update company info and see who's viewing your profile.
Building Permits by Air Conditioning & Heating Mechanical Masters
This is a sample of this contractor's permits. Click here to access their complete permit history.
General hvac for 7 story apartment building over one level of parking. work includes 1 level of mechanical garage ventilation
Valuation:
$15,500,000
Permit #:
18044-10000-06365
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Installatin of hvac systems in a 5-story mixed use commercial-residential building; 4-story 108-unit over one level basement parking. comply with department order effective date05/01/2018. permit will expire 30 days from issuance date see application comment
Valuation:
N/A
Permit #:
18044-20000-14890
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Install new hvac system. includes environmental ventilation
Valuation:
N/A
Permit #:
24044-10000-11929
Status:
issued
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Revision to approved plans including replacing air conditioning units rerouting exhaust ducts to side of the building where practical and exhaust duct volume of air
Valuation:
N/A
Permit #:
20044-20001-00455
Status:
plancheck
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Installation of hvac system for 6 story mixed use building over subterranean garage. includes environmental ventilation air conditioning and garage exhaust
Valuation:
N/A
Permit #:
16044-10000-14762
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Plan chech only. revisions to approved plans (to install in-line garage exhaust fan instead of rooftop utility fan in 1st floor mechanical room)
Valuation:
N/A
Permit #:
18044-20002-13810
Status:
approved
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Supplemental to permit 19044-10000-14279 to change contractor from: capella air conditioning & heating to: air conditioning & heating lic # 344739
Valuation:
N/A
Permit #:
19044-30001-14279
Status:
issued
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Supplemental permit 20044-10000-05627 correct address from: 7644 n. van nuys blvd 1- 124 to 7650 n. van nuys blvd
Valuation:
N/A
Permit #:
20044-20004-05627
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Adding 24 tons of air 5 systems total
Valuation:
N/A
Permit #:
21044-20003-28734
Status:
issued
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Installation of new hvac system for a 6-story 34-unit apartment building w/parking garage roof deck leasing office & rec room/gym
Valuation:
N/A
Permit #:
18044-20000-13810
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Hvac system for apartment building. comply with department order effective date 11/27/2020. permit will expire 30 days from issuance date
Valuation:
N/A
Permit #:
19044-20000-13116
Status:
issued
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Request to eliminate exhaust fans in lobbies. plan check for new generator room added in the garage
Valuation:
N/A
Permit #:
18044-20001-13810
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Revisions to approved plans. provide ventilation and hvac for two newly added private storages at the basement for an existing building
Valuation:
N/A
Permit #:
21044-10001-00860
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Hvac system including split heat pumps parking garage ventilation system and ventilation fans
Valuation:
N/A
Permit #:
20044-20000-00455
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Change of address and legal description from 1180 s la brea
Valuation:
N/A
Permit #:
19044-20002-03975
Status:
issued
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Plan check for heating venting air conditioning and parking garage exhaust ventilation
Valuation:
N/A
Permit #:
20044-10000-05627
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Install hvac system for new apartment building. includes general hvac for units and common spaces corridor ventilation garage ventilation generator room ventilation
Valuation:
N/A
Permit #:
18044-10000-04412
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Hvac
Valuation:
N/A
Permit #:
25044-90000-00769
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Hvac
Valuation:
N/A
Permit #:
25044-90000-00767
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Supplemental to 24044 90000 07783 for whitness test 2 system shut down
Valuation:
N/A
Permit #:
24044-30001-07783
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Similar Contractors See more
142
BZ Score
$6K
Avg Project
-
Projects
138
BZ Score
-
Avg Project
-
Projects
146
BZ Score
$9.2K
Avg Project
-
Projects
Air Conditioning & Heating Mechanical Masters Reviews
BuildZoom hasn't received any reviews for Air Conditioning & Heating Mechanical Masters. Click here to be alerted when reviews are posted about them.
Recent Buildzoom Projects
Let us find you an HVAC pro in your area today
We'll search our vast network of HVAC Pros and connect
you with one that meets your needs today.
Verified License
BuildZoom confirmed this contractor's license
Air Conditioning & Heating Mechanical Masters License info
Verified License
| License # | 344739 |
| Status | Active |
| State | California |
| Type | Warm Air Heating, Ventilating And Air Conditioning |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of January 2026.
Verify this license's status for Air Conditioning & Heating Mechanical Masters at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 770957 |
| 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 Air Conditioning & Heating Mechanical Masters at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
110
BuildZoom Score
Bonded
| Bonded Agent | Wesco Insurance Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Benchmark Insurance Company |
238
Permits
- Building permit records show that Air Conditioning & Heating Mechanical Masters has worked on 238 permitted projects.
Air Conditioning & Heating Mechanical Masters Employees
BD
Bruce Howard Downs
Officer
ED
Eric Robert Downs
Sole Owner
JD
Joan Barbara Downs
Officer
RD
Robert Vann Downs
Sole Owner