Updated: Jun 02, 2026
Location and Projects
Address
36 THORSON RD, Oxford, CT, 06478
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Harold J Olsen HVAC/Mechanical Contractor
Harold J Olsen, 36 Thorson Rd, Oxford, CT (Employee: Harold Olsen) holds a Heating, Piping & Cooling Unlimited Contractor license and 1 other license according to the Connecticut license board.
Their BuildZoom score of 94 ranks in the top 24% of 12,093 Connecticut licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Harold J Olsen, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Harold J Olsen Contact Information
Address: 36 THORSON RD, Oxford, CT 06478
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Harold J Olsen Oxford
Quality
94
76th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Harold J Olsen has a BuildZoom score of 94, which places them above 76% of 12,093 contractors in Connecticut.
Activity
|
1 project
|
2024 |
|
1 project
|
2023 |
Our building permit records indicate that Harold J Olsen has worked on at least
2.0 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.
Pricing
|
1 project
|
$5k-$20k |
|
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.
This is a sample of this contractor's permits. Click here to access their complete permit history.
Replace 2 central air conditioning systems. (1) carrier 38auza16 15 ton condensor with 40ruaa16t fan coil cahwcoil002 hot water coil and caecomzr010 economizer to replace main system. (1) carrier mmy-mup0721 6 ton vrf heat pump with (2) mmu-up0361 indoor ceiling cassette evaporators for community room
Valuation:
$76,418
Permit #:
24-42M
Status:
expired
Fee:
$1,260
Permit Type:
Air conditioning ...
Building Type:
N/A
Replace 2 air conditioning systems with carrier equipment
Valuation:
$18,000
Permit #:
M-23-58
Status:
issued
Fee:
N/A
Permit Type:
HVAC- residential
Building Type:
Single family
Install ductwork to existing fan coil units and fresh air system. ***process refund fees covered under building permit***
Valuation:
$92,000
Permit #:
M-18-503
Status:
complete
Fee:
$1,542
Permit Type:
HVAC
Building Type:
Office/bank bldgs
Replace furnace and air conditioning
Valuation:
N/A
Permit #:
48045
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
$14,500
Permit #:
M-18-151
Status:
issued
Fee:
$258
Permit Type:
HVAC - r
Building Type:
One & two family
Install heating and air conditioning equipment exhaust fans dryer venting and garage co exhaust system
Valuation:
$907,211
Permit #:
M-16-8
Status:
complete
Fee:
$0
Permit Type:
HVAC
Building Type:
Accessory structures
Install carrier lp gas furnace model 59sp5b100 100, 000 btu 95% afue and carrier 24acb548 48, 000 btu air conditioning system. furnace located in basement with pvc venting
Valuation:
$18,000
Permit #:
20-31M
Status:
approved
Fee:
$207
Permit Type:
N/A
Building Type:
N/A
Install lp gas furnace central air conditioning for new home
Valuation:
$18,000
Permit #:
21-198M
Status:
approved
Fee:
$207
Permit Type:
HVAC: subcontract...
Building Type:
N/A
Install 2 gas furnace with central air conditioning for new construction. lp gas
Valuation:
$16,000
Permit #:
19-11M
Status:
expired
Fee:
$185
Permit Type:
Residential mecha...
Building Type:
N/A
No Description Available
Valuation:
$12,500
Permit #:
M-18-47
Status:
complete
Fee:
$224
Permit Type:
HVAC - r
Building Type:
One & two family
No Description Available
Valuation:
$12,000
Permit #:
M-18-46
Status:
complete
Fee:
$207
Permit Type:
HVAC - r
Building Type:
One & two family
No Description Available
Valuation:
$12,500
Permit #:
M-18-45
Status:
complete
Fee:
$224
Permit Type:
HVAC - r
Building Type:
One & two family
No Description Available
Valuation:
$12,000
Permit #:
M-18-44
Status:
complete
Fee:
$207
Permit Type:
HVAC - r
Building Type:
One & two family
No Description Available
Valuation:
$12,500
Permit #:
M-17-460
Status:
issued
Fee:
$224
Permit Type:
HVAC - r
Building Type:
One & two family
No Description Available
Valuation:
$12,500
Permit #:
M-17-297
Status:
issued
Fee:
$224
Permit Type:
HVAC - r
Building Type:
One & two family
No Description Available
Valuation:
$12,000
Permit #:
M-17-233
Status:
issued
Fee:
$207
Permit Type:
HVAC - r
Building Type:
One & two family
Hvac
Valuation:
$12,700
Permit #:
M-14-21109
Status:
Issued
Fee:
$203
Permit Type:
Residential
Building Type:
Single family
Hvac
Valuation:
$12,600
Permit #:
M-14-21101
Status:
Issued
Fee:
$203
Permit Type:
Residential
Building Type:
Single family
Hvac
Valuation:
$12,700
Permit #:
M-14-21093
Status:
Issued
Fee:
$203
Permit Type:
Residential
Building Type:
Single family
Hvac
Valuation:
$12,000
Permit #:
M-14-21065
Status:
Issued
Fee:
$188
Permit Type:
Residential
Building Type:
Single family
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Harold J Olsen Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Harold J Olsen License info
Verified License
| License # | HTG.0303129-S1 |
| Status | Active |
| State | Connecticut |
| Type | Heating, Piping & Cooling Unlimited Contractor |
| Date Issued | 09-01-2025 |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Harold J Olsen at the Connecticut Department of Consumer Protection.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | HTG.0307777-ST1 |
| Status | Active |
| State | Connecticut |
| Type | Heating, Piping & Cooling Limited Contractor |
| Date Issued | 09-01-2025 |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Harold J Olsen at the Connecticut Department of Consumer Protection.
This is a sample of licensing data; click here to access a complete history.
94
BuildZoom Score
68
Permits
- Building permit records show that Harold J Olsen has worked on 68 permitted projects.
Harold J Olsen Employees
HO
Harold Olsen