Updated: Jul 05, 2026
Location and Projects
Address
Sun Prairie, WI, 53590
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Williamson Heating & Cooling
Williamson Heating & Cooling at WI 53590, held a HVAC/Mechanical Contractor license (#4188) with the Milwaukee contractors license board. We last verified the license was inactive on 07-03-2026.
Their BuildZoom score is 0 because we haven’t been able to verify an active license. As a result, they’re not ranked in the top 50% of 94,017 Wisconsin contractors.
If you’re thinking about hiring them, we recommend double-checking their license status with your local licensing authority. Alternatively, use our bidding system to be easily matched to qualified, licensed professionals in your area.
Williamson Heating & Cooling Contact Information
Phone Number: (608) 837-5566
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Building Permits by Williamson Heating & Cooling
This is a sample of this contractor's permits. Click here to access their complete permit history.
Replacing furnace
Valuation:
$1,925
Permit #:
20160992-B380
Status:
complete
Fee:
$25
Permit Type:
Furn rpl r
Building Type:
N/A
Replace furnace
Valuation:
$2,167
Permit #:
20160994-B380
Status:
complete
Fee:
$25
Permit Type:
Furn rpl r
Building Type:
N/A
Replace furnace power vent ng
Valuation:
$4,000
Permit #:
20131766-B380
Status:
complete
Fee:
$25
Permit Type:
Furn rpl r
Building Type:
N/A
Replace furnace
Valuation:
$0
Permit #:
20111588-B380
Status:
applied
Fee:
$25
Permit Type:
Furn rpl r
Building Type:
N/A
Remodel 3 season room to 4 season
Valuation:
$0
Permit #:
19991001-B690
Status:
applied
Fee:
$24
Permit Type:
Struct alter
Building Type:
N/A
Remodel 3 season room to 4 season
Valuation:
$0
Permit #:
19991001-B530
Status:
applied
Fee:
$5
Permit Type:
Occ alter
Building Type:
N/A
Remodel 3 season room to 4 season
Valuation:
$0
Permit #:
19991001-B300
Status:
applied
Fee:
$77
Permit Type:
HVAC alter
Building Type:
N/A
Remodel 3 season room to 4 season
Valuation:
$0
Permit #:
19991001-B160
Status:
applied
Fee:
$20
Permit Type:
Elect alter
Building Type:
N/A
Replace air conditioning and furnace
Valuation:
$0
Permit #:
20101277-B380
Status:
applied
Fee:
$25
Permit Type:
Furn rpl r
Building Type:
N/A
Replace air conditioning and furnace
Valuation:
$0
Permit #:
20101277-B310
Status:
applied
Fee:
$29
Permit Type:
Air conditioning ...
Building Type:
N/A
Replacement of furnace
Valuation:
$0
Permit #:
20101743-B380
Status:
applied
Fee:
$25
Permit Type:
Furn rpl r
Building Type:
N/A
Replace furnace
Valuation:
$0
Permit #:
20101694-B380
Status:
applied
Fee:
$25
Permit Type:
Furn rpl r
Building Type:
N/A
Replace furnace
Valuation:
$0
Permit #:
20101594-B380
Status:
applied
Fee:
$25
Permit Type:
Furn rpl r
Building Type:
N/A
Replace furnace
Valuation:
$0
Permit #:
20001022-B300
Status:
applied
Fee:
$50
Permit Type:
HVAC alter
Building Type:
N/A
Install new air conditioning
Valuation:
$0
Permit #:
20000568-B300
Status:
applied
Fee:
$17
Permit Type:
HVAC alter
Building Type:
N/A
Install new air conditioning
Valuation:
$0
Permit #:
20000568-B160
Status:
applied
Fee:
$9
Permit Type:
Elect alter
Building Type:
N/A
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Williamson Heating & Cooling Reviews
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Williamson Heating & Cooling License info
Inactive License
| License # | 4188 |
| Status | Inactive |
| City | Milwaukee |
| Type | Hvac Contractor |
- According to the City of Milwaukee License Search, 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 Williamson Heating & Cooling at the City of Milwaukee License Search.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 4188-HVACCONT |
| Status | Inactive |
| State | Wisconsin |
| Type | Hvac Contractor |
- According to the Wisconsin Department of Safety and Professional Services, 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 Williamson Heating & Cooling at the Wisconsin Department of Safety and Professional Services.
This is a sample of licensing data; click here to access a complete history.
ALERT*
BuildZoom Score
- How the BuildZoom Score works
- *No active license on file. If you are Williamson Heating & Cooling, click “This is My Business” to update your information.
11
Permits
- Building permit records show that Williamson Heating & Cooling has worked on 11 permitted projects.
Williamson Heating & Cooling Employees
JW
Jeffrey Williamson
JW
John E Williamson
Owner