Updated: Jun 01, 2026
Location and Projects
Address
16 JAMES ST, North Haven, CT, 06473
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John W Montz HVAC/Mechanical Contractor
John W Montz, 16 James St, North Haven, CT (Employees: Andrew Montz and John Montz) holds a Heating, Piping & Cooling Unlimited Contractor license and 2 other licenses 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 W Montz, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
John W Montz Contact Information
Address: 16 JAMES ST, North Haven, CT 06473
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This is a sample of this contractor's permits. Click here to access their complete permit history.
Replacement of hvac goodman gsx13024 unit air handler condenser & ducts. must meet 2012 imc 2014 nec along with amendments load cals provided
Valuation:
$8,800
Permit #:
M-17-129
Status:
issued
Fee:
$137
Permit Type:
HVAC
Building Type:
Condo
Required gas piping for new gas boiler. (natural gas)****see additional permit for gas boiler****
Valuation:
$1,500
Permit #:
15353
Status:
issued
Fee:
N/A
Permit Type:
New installation
Building Type:
Single family
Replace leaking bock 32e oil fired water heater with new beckett oil burner and controls
Valuation:
$2,300
Permit #:
M-20-252
Status:
issued
Fee:
N/A
Permit Type:
Replacement
Building Type:
N/A
Run gas line from propane tanks to furnace.**pending issuance of mechanical permit
Valuation:
$1,000
Permit #:
14623
Status:
issued
Fee:
N/A
Permit Type:
New installation
Building Type:
Single family
Replace boiler - install new gas. r velez 203-946-7595 cert of approval contractor: 203-627-4626
Valuation:
$6,900
Permit #:
M-15-248
Status:
issued
Fee:
$243
Permit Type:
Furnace/boiler
Building Type:
Single family
Run gas piping to boiler from meter bar replace oil boiler with gas boiler to hw. r velez 203-946-7595 cert of approval contractor: 203-627-4626
Valuation:
$6,200
Permit #:
M-13-324
Status:
issued
Fee:
$243
Permit Type:
Furnace/boiler
Building Type:
Single family
Install gas fired direct vent wall navien combo water heater/boiler including gas piping
Valuation:
$8,750
Permit #:
M-14-524
Status:
issued
Fee:
$111
Permit Type:
Mechanical - R
Building Type:
Single Family
Run gas line from meter bar to new furnace which was pulled under a different permit
Valuation:
$1,000
Permit #:
9498
Status:
issued
Fee:
N/A
Permit Type:
New installation
Building Type:
Single family
Replace old system w new one (oil to gas) r velez 203-946-7595 cert of approval contractor: 203-627-4626
Valuation:
$7,900
Permit #:
M-14-179
Status:
issued
Fee:
$271
Permit Type:
Mechanical-heating
Building Type:
Single family
Replace existing boilers w (6) navien tankless hot water heaters. r velez 203-946-7595
Valuation:
$29,000
Permit #:
M-14-178
Status:
issued
Fee:
$843
Permit Type:
Furnace/boiler
Building Type:
N/A
3rd fl. replace gas furnace. m rispoli contractor: 203-624-4626
Valuation:
$4,900
Permit #:
M-14-615
Status:
issued
Fee:
$189
Permit Type:
Furnace/boiler
Building Type:
N/A
Run new gas line to furnace. propane tanks under separate permit
Valuation:
$800
Permit #:
11304
Status:
issued
Fee:
N/A
Permit Type:
Other (specify in...
Building Type:
Single family
Install gas line with hot water. (domestic) r velez 203-946-7595 cert of approval contractor: 203-627-4626
Valuation:
$14,900
Permit #:
M-14-435
Status:
issued
Fee:
$461
Permit Type:
Mechanical-heating
Building Type:
Single family
Gas piping for new furnace and water heater pulled under permit
Valuation:
$1,500
Permit #:
7611
Status:
active
Fee:
N/A
Permit Type:
Other (specify in...
Building Type:
Single family
Gas piping for new boiler pulled under different permit
Valuation:
$1,000
Permit #:
7516
Status:
active
Fee:
N/A
Permit Type:
Other (specify in...
Building Type:
Single family
Replace boiler and oil tank retrofit to code
Valuation:
$7,900
Permit #:
M-12-01419
Status:
issued
Fee:
N/A
Permit Type:
Mechanical pmt un...
Building Type:
N/A
Replace gas fired boiler as per code
Valuation:
$5,000
Permit #:
M-11-03729
Status:
issued
Fee:
N/A
Permit Type:
Mechanical pmt un...
Building Type:
N/A
Install new gas line for boiler
Valuation:
$800
Permit #:
6711
Status:
active
Fee:
N/A
Permit Type:
Other (specify in...
Building Type:
Single family
Run new gas line need air test
Valuation:
$900
Permit #:
6673
Status:
complete
Fee:
N/A
Permit Type:
New installation
Building Type:
Single family
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John W Montz Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
John W Montz License info
Verified License
| License # | HTG.0412824-S1 |
| Status | Active |
| State | Connecticut |
| Type | Heating, Piping & Cooling Unlimited Contractor |
| Date Issued | 09-10-2025 |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for John W Montz 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.0386421-D1 |
| Status | Active |
| State | Connecticut |
| Type | Heating, Piping & Cooling Limited Contractor |
| Date Issued | 09-10-2025 |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for John W Montz 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.0309113-S7 |
| Status | Active |
| State | Connecticut |
| Type | Heating, Piping & Cooling Limited Contractor |
| Date Issued | 09-10-2025 |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for John W Montz at the Connecticut Department of Consumer Protection.
This is a sample of licensing data; click here to access a complete history.
90
BuildZoom Score
19
Permits
- Building permit records show that John W Montz has worked on 19 permitted projects.
John W Montz Employees
AM
Andrew Montz
JM
John Montz