Updated: May 12, 2026
Location and Projects
Address
3121 ROWENA DRIVE, Los Alamitos, CA, 90720
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Precision Comfort Systems HVAC/Mechanical Contractor
Precision Comfort Systems, 3121 Rowena Dr, Los Alamitos, CA (Owned by: Dennis Robert Yosanovich) holds a Renovation license and 1 other license according to the Environmental Protection Agency license board.
Their BuildZoom score of 107 ranks in the top 6% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Precision Comfort Systems, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Precision Comfort Systems Contact Information
Phone Number: (714) 421-1815
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Address: 3121 ROWENA DRIVE, Los Alamitos, CA 90720
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Precision Comfort Systems Los Alamitos
Quality
107
94th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Precision Comfort Systems has a BuildZoom score of 107, which places them above 94% of 336,931 contractors in California.
Activity
|
6 projects
|
2025 |
|
6 projects
|
2024 |
|
6 projects
|
2023 |
Our building permit records indicate that Precision Comfort Systems has worked on at least
18.0 projects over the past 3 years.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Experience
|
5 projects
|
Home Additions |
|
18 projects
|
HVAC projects |
|
15 projects
|
Mechanical projects |
Analyzing permits over the last 4 years shows that Precision Comfort Systems mostly works on
hvac project
and mechanical project
projects.
Pricing
|
1 project
|
$5k-$20k |
|
2 projects
|
$20k-$50k |
|
1 project
|
$50k-$100k |
Pro tip:
For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.
Building Permits by Precision Comfort Systems
This is a sample of this contractor's permits. Click here to access their complete permit history.
Remove and replace existing furnace air conditioning and ductwork. relocate furnace to attic connect to existing ductwork locations and existing air conditioning electrical
Valuation:
$20,682
Permit #:
COMBR-2025-00256
Status:
issued
Fee:
$1,068
Permit Type:
N/A
Building Type:
N/A
Install (n) air conditioning disconnect switch (n) electrical. in attic for furnace relocation & main panel upgrade 200 amps ***contractor to be onsite for first inspection*** ***refer to stainless steel ground rod requirement per hbmc 17.48.040***
Valuation:
N/A
Permit #:
E2024-002765
Status:
final
Fee:
$390
Permit Type:
N/A
Building Type:
N/A
Install (n) air conditioning unit in side yard replace & relocate furnact to attic r/r 10 ducts ***calcerts # 224-a020052572a*** ***30” setback to property line required for air conditioning units***
Valuation:
N/A
Permit #:
M2024-002764
Status:
final
Fee:
$228
Permit Type:
N/A
Building Type:
N/A
Remove and replace 5 rooftop mounted mechanical units. utilizing existing ducting system
Valuation:
$75,000
Permit #:
B-25-720
Status:
issued
Fee:
$1,256
Permit Type:
N/A
Building Type:
N/A
Addition (n) air conditioning unit in deck ***cheers # a026605356a*** ***30” setback to property line required for air conditioning units* live load: 3 x 3 pad;150; lbs air conditioning under 20lbs per sf
Valuation:
N/A
Permit #:
M2023-008029
Status:
final
Fee:
$195
Permit Type:
N/A
Building Type:
N/A
Addition (n) air conditioning unit in deck ***cheers #a026605278a*** ***30” setback to property line required for air conditioning units* live load: 3 x 3 pad;150; lbs air conditioning under 20lbs per sf
Valuation:
N/A
Permit #:
M2023-008026
Status:
final
Fee:
$195
Permit Type:
N/A
Building Type:
N/A
Mechanical air conditioning & furnace change out * timers prohibited on heat pumps * tamper resistant cap required *
Valuation:
N/A
Permit #:
H2022-0528
Status:
final
Fee:
$136
Permit Type:
N/A
Building Type:
N/A
Replace split system hvac; fau (closet) & air conditioning (rear yard) and replace (7) duct runs & coil
Valuation:
N/A
Permit #:
B-24-858
Status:
issued
Fee:
$222
Permit Type:
N/A
Building Type:
N/A
Relocate fau to the attic with 8 new registers. install new air conditioning w disconnect elec- light outlet switch
Valuation:
N/A
Permit #:
M22-00048
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Relocate fau to the attic with 8 new registers. install new air conditioning w disconnect elec- light outlet switch
Valuation:
N/A
Permit #:
E22-00137
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential mechanical combo permit - air conditioning furnace and ducts 2.5 ton air conditioning 60k btu furnace ducts hers rating required for refrigerant charge & duct testing required if greater than 40 feet
Valuation:
N/A
Permit #:
MEPR-2020-0160
Status:
complete
Fee:
$200
Permit Type:
N/A
Building Type:
N/A
Relocate furnace to attic remove and replace existing ductwork remove and replace 4-ton condensor - same location (10) duct runs to be replaced
Valuation:
N/A
Permit #:
BLD-2021-01050
Status:
final
Fee:
$54
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
$20,878
Permit #:
BLDR-2022-2589
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mechanical replace (2) heat pumps @ the side yard tamper resistant caps req
Valuation:
N/A
Permit #:
H2023-0723
Status:
final
Fee:
$180
Permit Type:
N/A
Building Type:
N/A
C/o furnace in (e) closet; (n) air conditioning at front courtyard - see hoa approval ***calcerts: 223-a026583988a***
Valuation:
N/A
Permit #:
M2023-006718
Status:
final
Fee:
$228
Permit Type:
N/A
Building Type:
N/A
Install ductless mini split units
Valuation:
N/A
Permit #:
B22-000283
Status:
issued
Fee:
$200
Permit Type:
N/A
Building Type:
N/A
Remove furnace and duct work install new fau relocate to attic. new air conditioning unit at side yard. gas line 9 ducts 1 residence air conditioning pkg 1 light 1 switch in attic
Valuation:
N/A
Permit #:
M19-00061
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove furnace and duct work install new fau relocate to attic. new air conditioning unit at side yard. gas line 9 ducts 1 residence air conditioning pkg 1 light 1 switch in attic
Valuation:
N/A
Permit #:
E19-00082
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace 75k fau like for like install (n) air conditioning condensing unit w/ac disconnect replace wall heater (no ductwork)
Valuation:
N/A
Permit #:
19-0110
Status:
final
Fee:
$381
Permit Type:
N/A
Building Type:
N/A
Electrical. for r/r furnace (same location) & install new air conditioning condenser unit w coil & electrical. disconnect (15 c/o) calcerts: 218-a020323796a entered by: floresa
Valuation:
N/A
Permit #:
E2018-007982
Status:
final
Fee:
$82
Permit Type:
N/A
Building Type:
N/A
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Precision Comfort Systems Reviews
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Verified License
BuildZoom confirmed this contractor's license
Precision Comfort Systems License info
Verified License
| License # | NAT-F255673-1 |
| Status | Active |
| Nation | Environmental Protection Agency |
| Type | Renovation |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Precision Comfort Systems at the United States Environmental Protection Agency.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 956819 |
| 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 Precision Comfort Systems at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
107
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Farm Fire & Casualty Company |
63
Permits
- Building permit records show that Precision Comfort Systems has worked on 63 permitted projects.
Precision Comfort Systems Employees
DY
Dennis Robert Yosanovich
Owner