Updated: Jul 24, 2026
Location and Projects
Address
Oshkosh, WI, 54904
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Nau Heating & Cooling
Nau Heating & Cooling at WI 54904, held a HVAC/Mechanical Contractor license (#1019981) with the Milwaukee contractors license board. We last verified the license was inactive on 07-23-2026.
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.
Nau Heating & Cooling Contact Information
Phone Number: (920) 231-6363
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Building Permits by Nau Heating & Cooling
This is a sample of this contractor's permits. Click here to access their complete permit history.
Comm/ create new office with in existing space in the lower level/ basement. a final balancing report will need to be submitted prior to the final inspection.
Valuation:
$880
Permit #:
158190
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Duplex (unit a) / remove old heating system and replace with wall furnace faw-40 with vent through wall. electric heater in bathroom wall. no electrical work. electrical outlet already installed.
Valuation:
$2,100
Permit #:
147151
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Apartments / combine units 109/111 & 110/112 to create two bedroom apartments. each will result in a 585 sf apartment. replacing radiator covers, adding two dryer vents and installing 4 new thermostats.
Valuation:
$3,750
Permit #:
135292
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Sfr/ replace furnace with new furnace due to age and not working electrician is zimmer electric
Valuation:
$2,200
Permit #:
159026
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Comm (1561 - jet fitness) / replace rooftop unit and install new register and bath fans, air balancing by badger balance check #1809
Valuation:
$13,000
Permit #:
149309
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Comm (rolanda's salon) / tenant alteration to create a salon (see approved plans) check #1843
Valuation:
$12,500
Permit #:
152798
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Comm/ replace rooftop a/c unit ck #1884
Valuation:
$10,750
Permit #:
156479
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Commercial adding wall with door per floor plan provided
Valuation:
$1,200
Permit #:
141138
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install dryer vent in unit 117/119 and one in unit 265. reventing new exhaust fan in unit 117/119.
Valuation:
$1,150
Permit #:
138616
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Sfr / install new a/c unit and 1 heat run to kitchen. electrical contractor zimmer electric.
Valuation:
$1,550
Permit #:
124779
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Sfr / replace furnace and a/c due to flooding, eiv signed by hullar electric check #1509
Valuation:
$3,925
Permit #:
132152
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Sfr / replace furnace due to flood damage, eiv signed by zimmer electric check #1490
Valuation:
$2,075
Permit #:
130938
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Sfr / replace boiler (due to flooding). eiv signed by ace electrical services
Valuation:
$3,200
Permit #:
131535
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Com\ new 1 1/2 ton a/c unit for upper rental unit. eiv attached.
Valuation:
$1,325
Permit #:
125496
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Commercial - replace hvac system, install new forced air system.
Valuation:
$10,050
Permit #:
124308
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Comm / replace furnace. eiv signed by hullar electric.
Valuation:
$1,300
Permit #:
141192
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Single family residence replace furnace eiv signed by hullar electric
Valuation:
$3,756
Permit #:
142045
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Commercial (upper residential) install new furnace
Valuation:
$3,800
Permit #:
123384
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Comm / tenant space alterations.
Valuation:
$15,000
Permit #:
139760
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Nau Heating & Cooling License info
Inactive License
| License # | 1019981 |
| 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 Nau 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 # | 1019981-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 Nau 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
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- *No active license on file. If you are Nau Heating & Cooling, click “This is My Business” to update your information.
18
Permits
- Building permit records show that Nau Heating & Cooling has worked on 18 permitted projects.
Nau Heating & Cooling Employees
KN
Kenneth J Nau
Owner
KN
Kenneth Nau