Updated: Jun 01, 2026
Location and Projects
Address
PO BOX 444, Columbia, CT, 06237
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John Slavis HVAC/Mechanical Contractor
John Slavis, Columbia, Po Box 444, Columbia, CT holds a Heating, Piping & Cooling Limited Contractor license according to the Connecticut license board.
Their BuildZoom score of 90 indicates that they are licensed or registered but we do not have additional information about them.
Their license was verified as active when we last checked. If you are thinking of hiring John Slavis, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
John Slavis Contact Information
Address: PO BOX 444, Columbia, CT 06237
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John Slavis Columbia
Quality
90
47th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
John Slavis has a BuildZoom score of 90, which places them above 47% of 12,093 contractors in Connecticut.
Activity
|
1 project
|
2023 |
Our building permit records indicate that John Slavis has worked on at least
1.0 project 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 |
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.
Install stainless steel radiant heater
Valuation:
$8,000
Permit #:
M-23-16
Status:
complete
Fee:
N/A
Permit Type:
Mechanical: new b...
Building Type:
Business
Install air condition system into existing gas furnace and rework gas piping for furnace stove and hot water heater
Valuation:
$4,100
Permit #:
17825
Status:
issued
Fee:
N/A
Permit Type:
HVAC:subcontract - r
Building Type:
Single family
Addition supply air outlet to new addition from existing heating system and new gas piping for fireplace
Valuation:
$1,800
Permit #:
MP-2017-166
Status:
Paid - Pending Approval
Fee:
$42
Permit Type:
Gas piping
Building Type:
N/A
Install heating and air conditioning system complete with duckwork
Valuation:
$14,900
Permit #:
MP-2016-156
Status:
Issued
Fee:
$253
Permit Type:
HVAC
Building Type:
N/A
Replace existing roof top unit with new unit of same capacity
Valuation:
$6,500
Permit #:
MP-2015-206
Status:
Issued
Fee:
$123
Permit Type:
HVAC
Building Type:
N/A
Replace 3 roof top units
Valuation:
$16,900
Permit #:
MP-2016-31
Status:
Closed
Fee:
$285
Permit Type:
HVAC
Building Type:
N/A
Run gas line for gas stove
Valuation:
$600
Permit #:
MP-2016-90
Status:
Issued
Fee:
$25
Permit Type:
Gas piping
Building Type:
N/A
Replace existing boiler at asahi restaurant
Valuation:
$6,100
Permit #:
MP-2015-216
Status:
Closed
Fee:
$123
Permit Type:
Boiler
Building Type:
N/A
Replace central heating and air conditioning system
Valuation:
$8,850
Permit #:
MP-2018-42
Status:
Paid - Pending Approval
Fee:
$185
Permit Type:
HVAC
Building Type:
N/A
Oil to gas conversion. remove oil furnace and install new gas furnace
Valuation:
$3,000
Permit #:
M-14-205
Status:
issued
Fee:
$62
Permit Type:
Boiler/furnace re...
Building Type:
Single family
Install new oil furnace and 5 ton air conditioning unit
Valuation:
$7,800
Permit #:
3023
Status:
complete
Fee:
N/A
Permit Type:
HVAC/mechanical:a...
Building Type:
Single family
Remove existing oil furnace and install new gas furnace
Valuation:
$3,200
Permit #:
M-13-79
Status:
issued
Fee:
$79
Permit Type:
Boiler/furnace re...
Building Type:
Single family
Replace existing heating & air conditioning systems
Valuation:
$19,950
Permit #:
M-12-111
Status:
complete
Fee:
$245
Permit Type:
Boiler/furnace re...
Building Type:
Single family
Install gas piping for new gas furnace
Valuation:
$1,200
Permit #:
P-13-94
Status:
issued
Fee:
$46
Permit Type:
Gas line
Building Type:
Single family
Hvac permit
Valuation:
$0
Permit #:
M-11-19162
Status:
Issued
Fee:
$158
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
M-13-332
Status:
complete
Fee:
$0
Permit Type:
HVAC - r
Building Type:
One & two family
No Description Available
Valuation:
N/A
Permit #:
M-10-36
Status:
complete
Fee:
$0
Permit Type:
HVAC - r
Building Type:
One & two family
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John Slavis Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
John Slavis License info
Verified License
| License # | HTG.0308595-D1 |
| Status | Active |
| State | Connecticut |
| Type | Heating, Piping & Cooling Limited Contractor |
| Date Issued | 09-01-2025 |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for John Slavis at the Connecticut Department of Consumer Protection.
This is a sample of licensing data; click here to access a complete history.
90
BuildZoom Score
15
Permits
- Building permit records show that John Slavis has worked on 15 permitted projects.
John Slavis Employees
JS
John Slavis