Updated: Jul 05, 2026
Location and Projects
Address
4312 Di Paolo Ctr, Glenview, IL, 60025
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Duct Professor Heating & Cooling
Duct Professor Heating & Cooling at 4312 Di Paolo Ctr, Glenview, IL 60025, held a HVAC/Mechanical Contractor license (#30879) with the Hoffman Estates contractors license board with an expiration date of 04-30-2024. We last verified the license was expired on 05-16-2026.
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 65,686 Illinois contractors.
If you’re thinking about hiring them, we recommend double-checking their license status with your local licensing authority. Alternatively, use our project planner to be easily matched to qualified, licensed professionals in your area.
Duct Professor Heating & Cooling Services
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Duct Professor Heating & Cooling Contact Information
Phone Number: (224) 707-0773
Address: 4312 Di Paolo Ctr, Glenview, IL 60025
Duct Professor Heating & Cooling Glenview
Quality
Alert*
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
*No active license on file. If you are Duct Professor Heating & Cooling, log in and update your license info in the “Edit Profile” tab.
Activity
|
10 projects
|
2025 |
|
7 projects
|
2024 |
|
8 projects
|
2023 |
Our building permit records indicate that Duct Professor Heating & Cooling has worked on at least
25.0 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
|
25 projects
|
HVAC projects |
Analyzing permits over the last 4 years shows that Duct Professor Heating & Cooling mostly works on
hvac project
projects.
Pricing
|
1 project
|
< $5k |
|
5 projects
|
$5k-$20k |
|
2 projects
|
$20k-$50k |
|
1 project
|
$50k-$100k |
|
4 projects
|
$100k-$250k |
|
1 project
|
$250k-$500k |
|
1 project
|
$500k-$1mil |
The typical size of their permits is approximately $50,000. 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 Duct Professor Heating & Cooling
This is a sample of this contractor's permits. Click here to access their complete permit history.
Self-cert 2019 cbrc: interior renovations new dormer with bathrooms remove existing frame balcony; hvac and plumbing upgrades in existing 2-story single family home with basement (occupancy group r-5; type v-a construction; area of work: 456sf)
Valuation:
$230,000
Permit #:
101063002
Status:
issued
Fee:
$925
Permit Type:
N/A
Building Type:
N/A
Self-cert 2019 crbc- interior alteration to 1 dwelling unit 1805 of existing 21-story 189 unit building.no stair or elevator modification or removal. no new openings in floor or ceiling. no modification to exterior walls or windows. no change to occupancy classification.(occupancy group r-2; construction type i-a)
Valuation:
$100,000
Permit #:
101065121
Status:
issued
Fee:
$728
Permit Type:
N/A
Building Type:
N/A
2019 cbc spr: interior renovation of an existing two story building with basement to renovate tavern into ground floor bar & restaurant and change 2nd floor residential unit to event space (indoor special event use) new two-story rear porch type iii-a construction a-2 occupancy
Valuation:
$200,000
Permit #:
101056520
Status:
issued
Fee:
$4,975
Permit Type:
N/A
Building Type:
N/A
Spr 2019 cbc: interior alterations to existing 1 story vacant tenant space previously s-1 occupancy for a new office space to include new partitions mep upgrades fence and trash enclosure as per plans. structural peer review included. (occupancy b type iib construction) **certifed plan corrections**
Valuation:
$950,000
Permit #:
100970046
Status:
complete
Fee:
$4,088
Permit Type:
N/A
Building Type:
N/A
Interior renovations in an existing 3 story/3 unit residence per plans
Valuation:
$400,000
Permit #:
101068763
Status:
issued
Fee:
$1,099
Permit Type:
N/A
Building Type:
N/A
Self-cert 2019 cbrc: interior alteration for a new yoga studio in a one-story existing building with associated architectural mechanical electrical and plumbing work. change of occupancy from m to b. (occupancy group b; type iib construction)
Valuation:
$30,000
Permit #:
101069580
Status:
issued
Fee:
$2,425
Permit Type:
N/A
Building Type:
N/A
Revision to permit #101014645: detached garage modifications from original permit with approved acar application. original permit # 100964054 (garage construction iii-a type vb addition occupancy r-5 detached single family residence no occupancy or construction change from original permit)
Valuation:
$40,000
Permit #:
101048126
Status:
issued
Fee:
$925
Permit Type:
N/A
Building Type:
N/A
Deconvert existing 2du to single family residence (use group r-5). interior alterations with mep as per plans for existing 2 story brick building with basement (construction type iiia)
Valuation:
$230,000
Permit #:
101025132
Status:
expired
Fee:
$1,459
Permit Type:
N/A
Building Type:
N/A
Spr 2019 cbrc - new interior opening within unit 1e of an existing three story multi du brick building with basement per plans **certified plans corrections: conditional permit subject to field inspections **
Valuation:
$15,000
Permit #:
101046643
Status:
issued
Fee:
$925
Permit Type:
N/A
Building Type:
N/A
Spr 2019 cbrc - interior renovation of unit 3i in a multi-story mixed use building as per plans**certified corrections subject to field inspections & audit **
Valuation:
$50,000
Permit #:
100993130
Status:
issued
Fee:
$600
Permit Type:
N/A
Building Type:
N/A
Internor renovations to extend the 4th floor within the existing envelope of in a 4 story/6 unit residence per plans
Valuation:
$50,000
Permit #:
101072451
Status:
issued
Fee:
$675
Permit Type:
N/A
Building Type:
N/A
Spr 2019 cbc - renovation of commercial space from nail salon to hair salon
Valuation:
$15,000
Permit #:
101066834
Status:
complete
Fee:
$975
Permit Type:
N/A
Building Type:
N/A
Change of hvac contractor permit #100993884 to duct professor inc
Valuation:
$250,000
Permit #:
101009616
Status:
issued
Fee:
$75
Permit Type:
N/A
Building Type:
N/A
Replacing air conditioning unit with one bryant 4 ton heat pump remote air cooled r410a located in the backyard
Valuation:
N/A
Permit #:
101021515
Status:
issued
Fee:
$75
Permit Type:
N/A
Building Type:
N/A
Air conditioning and coil installation
Valuation:
$7,033
Permit #:
BLDG2507-0021
Status:
final
Fee:
$125
Permit Type:
Residential unit ...
Building Type:
N/A
Interior renovations to convert existing 1 story commercial building to a day care per plans
Valuation:
$80,000
Permit #:
100966108
Status:
issued
Fee:
$3,325
Permit Type:
N/A
Building Type:
N/A
Revision to permit # 101029383. to change of other( vent) contractor
Valuation:
N/A
Permit #:
B200013622
Status:
complete
Fee:
$100
Permit Type:
Administrative ch...
Building Type:
N/A
Revision to permit#101014645 change hvac and plumbing contractors
Valuation:
N/A
Permit #:
B200013647
Status:
complete
Fee:
$100
Permit Type:
Administrative ch...
Building Type:
N/A
Revision to permit no 101040034 to change vent/refrig contractor
Valuation:
N/A
Permit #:
B200013389
Status:
complete
Fee:
$100
Permit Type:
Administrative ch...
Building Type:
N/A
Install heat pump in first floor unit
Valuation:
N/A
Permit #:
101021493
Status:
issued
Fee:
$150
Permit Type:
N/A
Building Type:
N/A
Duct Professor Heating & Cooling Reviews
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Recent Buildzoom Projects
Duct Professor Heating & Cooling License info
Inactive License
| License # | 30879 |
| Status | Inactive |
| Hoffman Estates | |
| Type | General Contractor |
- According to the Village of Hoffman Estates, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Duct Professor Heating & Cooling at the Village of Hoffman Estates.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CON-008844-2025 |
| Status | Inactive |
| Town | Palatine |
| Type | Mechanical/Hvac Contractor Registration |
| Class | Mechanical/HVAC |
| Date Issued | 09-30-2025 |
- According to the Village of Palatine Registered Contractors, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Duct Professor Heating & Cooling at the Village of Palatine Registered Contractors.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | TGC109040 |
| Status | Inactive |
| City | City Of Chicago |
| Type | General Contractor (Class E) |
- According to the City of Chicago Data Portal, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Duct Professor Heating & Cooling at the City of Chicago Data Portal.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| County | Cook County |
| Type | Hvac |
- According to the Cook County Department of Building and Zoning, the status of this license was at one point cancelled. However, this information may have changed.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 23LICH-0039 |
| Status | Inactive |
| City | Evanston |
| Type | Hvac |
- According to the City of Evanston Building and Inspection Services, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Duct Professor Heating & Cooling at the City of Evanston Building and Inspection Services.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 18364 |
| Status | Inactive |
| Hoffman Estates | |
| Type | General Contractor |
- According to the Village of Hoffman Estates, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Duct Professor Heating & Cooling at the Village of Hoffman Estates.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CR0001991 |
| Status | Inactive |
| County | Dupage County |
| Type | Sub Contractor, Hvac |
- According to the County of Dupage Contractor Registration Information, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Duct Professor Heating & Cooling at the County of Dupage Contractor Registration Information.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| City | City Of Chicago |
| Type | E $500,000 Project Ceiling |
- According to the City of Chicago Data Portal, the status of this license was at one point cancelled. However, this information may have changed.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| City | City Of Chicago |
| Type | E $500,000 Project Ceiling |
- According to the City of Chicago Data Portal, the status of this license was at one point cancelled. However, this information may have changed.
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 Duct Professor Heating & Cooling, log in and update your license info in the “Edit Profile” tab.
29
Permits
- Building permit records show that Duct Professor Heating & Cooling has worked on 29 permitted projects.
Duct Professor Heating & Cooling Employees
AM
Alex Mainaev
Owner
SM
Sergey Mainaev
Owner