Updated: May 29, 2026
Location and Projects
Address
N53 W24950 S Corporate Cir, Sussex, WI, 53089
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Interstate Heating Co., Inc. Photos
Interstate Heating Co., Inc.
What began in a garage in 1962—with Gordy Terry and John Cole's commitment to offering honest, high quality HVAC service—continues today at Interstate Heating in Sussex. We've grown to offer the latest heating, cooling, and air quality products, and our service area now covers all of southeastern Wisconsin. As one of Wisconsin's leading Carrier® dealers, we provide equipment of the highest caliber and adhere to stringent standards for customer service. From the very first phone call through precise installation and follow-up, Interstate guarantees a great experience.
From BuildZoom: Interstate Heating Co., Inc., N53 W24950 S, Sussex, WI (Owned by: David W Dlobik) holds a Hvac Contractor, Regular, False license and 4 other licenses according to the Wisconsin Rapids license board.
Their BuildZoom score of 111 ranks in the top 4% of 94,017 Wisconsin licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Interstate Heating Co., Inc., we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Interstate Heating Co., Inc. Contact Information
Phone Number: (262) 372-2772
Address: N53 W24950 S Corporate Cir, Sussex, WI 53089
Interstate Heating Co., Inc. Sussex
Quality
111
96th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Interstate Heating Co., Inc. has a BuildZoom score of 111, which places them above 96% of 94,017 contractors in Wisconsin.
Activity
|
89 projects
|
2025 |
|
85 projects
|
2024 |
|
81 projects
|
2023 |
Our building permit records indicate that Interstate Heating Co., Inc. has worked on at least
255.0 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.
Experience
|
6 projects
|
New Constructions |
|
233 projects
|
HVAC projects |
|
56 projects
|
Mechanical projects |
Analyzing permits over the last 4 years shows that Interstate Heating Co., Inc. mostly works on
hvac project
and mechanical project
projects.
Pricing
|
58 projects
|
< $5k |
|
64 projects
|
$5k-$20k |
|
6 projects
|
$20k-$50k |
|
1 project
|
$100k-$250k |
|
1 project
|
$1mil+ |
The typical size of their permits is approximately $5,741. This graph shows the distribution of these job values.
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.
Building Permits by Interstate Heating Co., Inc.
This is a sample of this contractor's permits. Click here to access their complete permit history.
Single family dwelling- furnace installment
Valuation:
$105,233
Permit #:
HVAC-GEN-25-00997
Status:
issued
Fee:
$370
Permit Type:
N/A
Building Type:
N/A
New udc- single family dwelling
Valuation:
$1,250,000
Permit #:
ECP-24-00021
Status:
filed
Fee:
$315
Permit Type:
N/A
Building Type:
N/A
Vent hood addition supply air toekick & move 2nd floor supply ai
Valuation:
$1,949
Permit #:
E_FURN25-00101
Status:
issued
Fee:
$70
Permit Type:
N/A
Building Type:
N/A
Furnace replacement (permit not required for direct replacement of air conditioning on a 1 or 2 family home. unless address is historic or brand new installment)
Valuation:
$8,649
Permit #:
HVAC-GEN-21-03896
Status:
complete
Fee:
$66
Permit Type:
N/A
Building Type:
N/A
Single family dwelling- furnace replacement
Valuation:
$6,005
Permit #:
HVAC-GEN-25-00265
Status:
issued
Fee:
$81
Permit Type:
N/A
Building Type:
N/A
Mini split 3t heat pump
Valuation:
$18,138
Permit #:
HVAC-GEN-25-01834
Status:
issued
Fee:
$81
Permit Type:
N/A
Building Type:
N/A
Single family - furnace replacement
Valuation:
$3,135
Permit #:
HVAC-GEN-25-00828
Status:
issued
Fee:
$81
Permit Type:
N/A
Building Type:
N/A
Install boiler and backflow preventer
Valuation:
N/A
Permit #:
P24-1021
Status:
final
Fee:
$95
Permit Type:
Boiler
Building Type:
N/A
National block apartments
Valuation:
$194,887
Permit #:
HVAC-GEN-18-02984
Status:
complete
Fee:
$3,809
Permit Type:
N/A
Building Type:
N/A
Replacing air conditioning
Valuation:
$5,820
Permit #:
E_FURN25-00202
Status:
issued
Fee:
$70
Permit Type:
N/A
Building Type:
N/A
Ductwork modifications - kitchen
Valuation:
$1,115
Permit #:
E_FURN25-00120
Status:
issued
Fee:
$70
Permit Type:
N/A
Building Type:
N/A
Install air conditioning unit and renovation duct work
Valuation:
N/A
Permit #:
P24-1030
Status:
issued
Fee:
$80
Permit Type:
A\c
Building Type:
N/A
Vent hood & move existing return airs in the dining room & family room into the floor
Valuation:
N/A
Permit #:
PH23-0362
Status:
final
Fee:
$65
Permit Type:
HVAC
Building Type:
N/A
New hvac
Valuation:
$16,204
Permit #:
HVAC-GEN-25-01477
Status:
issued
Fee:
$206
Permit Type:
N/A
Building Type:
N/A
Replace furnace
Valuation:
$7,016
Permit #:
HVAC-GEN-25-01066
Status:
issued
Fee:
$81
Permit Type:
N/A
Building Type:
N/A
Replace furnace
Valuation:
$6,555
Permit #:
E_FURN25-00132
Status:
issued
Fee:
$70
Permit Type:
N/A
Building Type:
N/A
Replace furnace
Valuation:
$5,422
Permit #:
E_FURN25-00061
Status:
final
Fee:
$70
Permit Type:
N/A
Building Type:
N/A
Replace roof top
Valuation:
$13,431
Permit #:
HVAC-GEN-25-00264
Status:
complete
Fee:
$174
Permit Type:
N/A
Building Type:
N/A
Remodel - ductwork
Valuation:
N/A
Permit #:
P24-1975
Status:
issued
Fee:
$75
Permit Type:
Ductwork
Building Type:
N/A
Install furnace and fan coil (heat pump)
Valuation:
N/A
Permit #:
P23-1272
Status:
final
Fee:
$80
Permit Type:
Furnace
Building Type:
N/A
Interstate Heating Co., Inc. Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Interstate Heating Co., Inc. License info
Verified License
| License # | 1528 - HVACCONT |
| Status | Active |
| City | Wisconsin Rapids |
| Type | Hvac Contractor, Regular, False |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Interstate Heating Co., Inc. at the City of Wisconsin Rapids.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 1528 |
| Status | Active |
| City | Milwaukee |
| Type | Hvac Contractor |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Interstate Heating Co., Inc. at the City of Milwaukee License Search.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 1528-HVACCONT |
| Status | Active |
| State | Wisconsin |
| Type | Hvac Contractor |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Interstate Heating Co., Inc. at the Wisconsin Department of Safety and Professional Services.
This is a sample of licensing data; click here to access a complete history.
Verified License
| Status | Active |
| City | Milwaukee |
| Type | Home Improvement Contractor's License |
- BuildZoom verified this license was active as of May 2026.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 1528-DCFR |
| Status | Inactive |
| State | Wisconsin |
| Type | Dwelling 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.
Check this license's status for Interstate Heating Co., Inc. at the Wisconsin Department of Safety and Professional Services.
This is a sample of licensing data; click here to access a complete history.
111
BuildZoom Score
502
Permits
- Building permit records show that Interstate Heating Co., Inc. has worked on 502 permitted projects.
Interstate Heating Co., Inc. Employees
DD
David Dlobik
DD
David W Dlobik
Owner