Updated: Jun 14, 2026
Location and Projects
Address
55121 211TH LN, Mankato, MN, 56001
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Mid States Mechanical Services Inc
Mid States Mechanical Services Inc, 55121-211 Th Ln, Mankato, MN (Owned by: Kent S Durenberger) holds a Mechanical Contractor Bond license and 7 other licenses according to the Minnesota license board.
Their BuildZoom score of 109 ranks in the top 5% of 77,973 Minnesota licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Mid States Mechanical Services Inc, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Mid States Mechanical Services Inc Services
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Mid States Mechanical Services Inc Contact Information
Phone Number: (507) 380-5027
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Address: 55121 211TH LN, Mankato, MN 56001
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Building Permits by Mid States Mechanical Services Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Job 6341 column valve replacements consisting of (6 ft) pipe 1 sch 80 sa106 grb smls (3 ft) pipe 3/4 sch 80 sa106 grb smls; (3 ft) pipe 1/2 sch 80 sa106 grb smls; (1) nipple 1-1/2 x 6 sch 80 sa106 grb smls; (1) sr elbow 1-1/2 sch 80sa234 grwpb short radius; (3) tee 1-1/2 sch 80 sa234 grwpb; (2) reducer 1-1/2 x 1 sch 80 sa234 grwpb concentric; (1) reducer 1-1/2 x 3/4 sch 80 sa234 grwpb... see more
Valuation:
N/A
Permit #:
HPP2504-00023
Status:
final
Fee:
$576
Permit Type:
Time & materials
Building Type:
N/A
Replace leaking steam heater piping consisting of (5 ft) pipe 3/4 sch 80 sa106 grb smls; (3) nipple 3/4 x 6 sch 80 sa106 grb smls; (1) nipple 3/8 x 3 sch 80 sa106 grb smls; (1) wye strainer 3/4 250# ci npt; (1) f&t steam trap 3/4 npt ci ; (1) check valve 3/4 sw 800# a105 fs inline swing; (2) gate valve 3/4 800# a105 800 fs sw; (1) ball valve 3/8 1000 wog full port 2-piece carbon thrd;... see more
Valuation:
N/A
Permit #:
HPP2503-00041
Status:
final
Fee:
$1,995
Permit Type:
Time & materials
Building Type:
N/A
Install new 10 sparge header piping with 6 piping and new trap on the 2nd floor of extraction. install new flash tank piping on the first floor of extraction 4 piping install new control valve piping on the 2nd floor of biodiesel 3 piping
Valuation:
N/A
Permit #:
HPP2504-00035
Status:
final
Fee:
$1,528
Permit Type:
Standard
Building Type:
N/A
Make steam piping repairs on multiple steam heaters in the energy center and process building. materials include; 20 ft pipe 3/4 sch 80 sa106 grb smls (9) nipple 3/4 x 6 sch 80 sa106 grb smls (2) elbow 3/4 3m sa105 fssw (1) tee 3/4 3m sa105 fssw (4) union 3/4 3m sa105 fssw (4) cap 3/4 3m sa105 fs thrd (1) plug 3/4 3m sa105 fs square head thrd (1) socolet 3/4 3m sa105 fssw (1) reducer ... see more
Valuation:
N/A
Permit #:
HPP2408-00014
Status:
final
Fee:
$411
Permit Type:
Time & materials
Building Type:
N/A
Replace existing carbon steel to2 economizer relief piping with stainless. materials to include (20 ft) pipe 3 sch 10 sa312 tp304l (1) elbow 3 sch 10 sa403 304l (1) 45 3 sch 10 sa403 304l (1) flange 3 150# sa182 f304l rfso
Valuation:
N/A
Permit #:
HPP2406-00026
Status:
final
Fee:
$284
Permit Type:
Time & materials
Building Type:
N/A
Replace existing carbon steel to2 economizer relief piping with stainless. this relief line is to the left of the one replaced in august. materials to include (20 ft) pipe 3 sch 10 sa312 tp304l (1) elbow 3 sch 10 sa403 304l (2) 45 3 sch 10 sa403 304l (1) flange 3 150# sa105 lj (1) stub end 3 sch 10 sa403 304l (4) studs 5/8 x 4 sa193 grb7 with sa194 gr2h nuts
Valuation:
N/A
Permit #:
HPP2409-00011
Status:
final
Fee:
$309
Permit Type:
Time & materials
Building Type:
N/A
Isolation valve and blinding the fluid bed line to include (1) gate valve 1-1/2 800# carbon os&y sw x sw steam (1) flange 2 150# sa105 rfso (1) blind 2 150# sa105 rf (1) gasket 2 150# 304 spiral wound (4) studs 5/8 x 3-3/4 sa193 grb7 with 2h nuts. hv62001 adding isolation valve and drain to include (20 ft) pipe 1 sch 80 sa106 grb smls (1) gate valve 1 800# carbon os&y sw x sw steam (3... see more
Valuation:
N/A
Permit #:
HPP2303-00006
Status:
final
Fee:
$372
Permit Type:
Standard
Building Type:
N/A
Install approximately 40 of 1 1/2 steam to the oil stripper with a new owner provided flow meter
Valuation:
N/A
Permit #:
HPP2503-00024
Status:
final
Fee:
$490
Permit Type:
Standard
Building Type:
N/A
Replace the rail loadout condensate tank and connect existing piping to the new tank
Valuation:
N/A
Permit #:
HPP2504-00005
Status:
final
Fee:
$723
Permit Type:
Standard
Building Type:
N/A
Install approximately 700 of snuff steam piping to the dtdc and the extractor
Valuation:
N/A
Permit #:
HPP2504-00017
Status:
final
Fee:
$2,959
Permit Type:
Standard
Building Type:
N/A
Install 84 of 2 sch 80 sa106 grb smls dryer c snuff steam piping in the energy center. install 21 of 1/2 sch 80 sa106 grb smls blend tank piping in the process building. additional steam projects my be added state inspector will be notified if this happens
Valuation:
N/A
Permit #:
HPP2311-00003
Status:
final
Fee:
$507
Permit Type:
Time & materials
Building Type:
N/A
1. addition a new condensate spool in the 2 condensate to the bleacher (parts for this were reported under permit hpp2109-0001 this permit is for installation.) 2. remove existing 3/4 sw gate valve in steam soap stock line and replace with a 3/4 150# flanged gate valve. 3. replace 1-1/2 sw gate valve in the steam runaround line in the gas plant. 4. replace 1/2 sw gate valve on the con... see more
Valuation:
N/A
Permit #:
HPP2208-00018
Status:
final
Fee:
$311
Permit Type:
Time & materials
Building Type:
N/A
Install 6 condensate piping to and from the beer heat exchanger
Valuation:
N/A
Permit #:
HPP2505-00017
Status:
final
Fee:
$730
Permit Type:
Time & materials
Building Type:
N/A
Remove old boiler and install new boiler at prairie drive location. we will install the old boiler at a new location on oxford street
Valuation:
N/A
Permit #:
HPP2401-00030
Status:
final
Fee:
$1,375
Permit Type:
Standard
Building Type:
N/A
Replace six feet of 3/4 sch 80 sa106 grb smls steam pipe to the heater on the se corner of the energy center. will include the pipe and one 3/4 3m sa105 fssw coupling
Valuation:
N/A
Permit #:
HPP2212-00002
Status:
final
Fee:
$269
Permit Type:
Standard
Building Type:
N/A
Tank farm 3 steam line replacement extraction 2 condensate replacement flash steam to the reboiler
Valuation:
N/A
Permit #:
HPP2508-00021
Status:
issued
Fee:
$1,496
Permit Type:
Standard
Building Type:
N/A
Install new 2 safety relief spool for new relief valve in energy center. install other high pressure steam piping as identified by the plant during the outage
Valuation:
N/A
Permit #:
HPP2309-00010
Status:
final
Fee:
$542
Permit Type:
Time & materials
Building Type:
N/A
Replace leaking 1 3m sa105 elbow. materials include approximately 10ft of pipe 1 sch 80 sa106 grb smls (1) elbow 1 3m sa105 fssw and (2) coupling 1 3m sa105 fssw
Valuation:
N/A
Permit #:
HPP2307-00012
Status:
final
Fee:
$294
Permit Type:
Time & materials
Building Type:
N/A
Replace approximately 25 of 2 condensate piping
Valuation:
N/A
Permit #:
HPP2501-00036
Status:
final
Fee:
$387
Permit Type:
Standard
Building Type:
N/A
Steam leak developed on 3 riser in distillation. replace pipe spool to include the following components; (20') pipe 10 sch 80 sa53 grb (20') pipe 3 sch 80 sa53 grb (1) reducer 10 x 4 sch 80 sa234 grwpb (1) reducer 4 x 3 sch 80 sa234 grwpb (1) flange 10 150# sa105 rfso (6) flange 3 150# sa105 rfso
Valuation:
N/A
Permit #:
HPP2110-00010
Status:
final
Fee:
$363
Permit Type:
Time & materials
Building Type:
N/A
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Mid States Mechanical Services Inc License info
Verified License
| License # | MB758754 |
| Status | Active |
| State | Minnesota |
| Type | Mechanical Contractor Bond |
| Business Type | Not Available |
- BuildZoom verified this license was active as of December 2025.
Verify this license's status for Mid States Mechanical Services Inc at the Minnesota Department of Labor & Industry.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | HC005019 |
| Status | Active |
| State | Minnesota |
| Type | High Pressure Piping |
| Business Type | Not Available |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Mid States Mechanical Services Inc at the Minnesota Department of Labor & Industry.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 48789 |
| Status | Active |
| State | Louisiana |
| Type | Industrial Pipe Work And Insulation |
| Class | Commercial License Certificate |
| Date Issued | 02-01-2026 |
| Business Type | Not Available |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Mid States Mechanical Services Inc at the Louisiana Licensing Board.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 66451 |
| Status | Active |
| State | Tennessee |
| Type | Contractors |
| Business Type | Not Available |
- When BuildZoom last verified this license, it had an expiration date of January, 2015. Check the current license status of Mid States Mechanical Services Inc with the Tennessee Department of Commerce and Insurance
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| City | Aurora |
| Type | Fuel Tank Contractor |
| Business Type | Not Available |
- According to the Aurora, Colorado, 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.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | MIDSTMS846JJ |
| Status | Inactive |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
| Business Type | Not Available |
- According to the Washington State Department of Labor & Industries, 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 Mid States Mechanical Services Inc at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | C089417 |
| Status | Inactive |
| State | Iowa |
| Type | Boilermaking & Steamfitting |
| Business Type | Not Available |
- According to the Iowa Workforce Development Agency, 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 Mid States Mechanical Services Inc at the Iowa Workforce Development Agency.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | BL005019 |
| Status | Inactive |
| State | Minnesota |
| Type | High Pressure Pipefitting Business |
| Business Type | Not Available |
- According to the Minnesota Department of Labor & Industry, 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 Mid States Mechanical Services Inc at the Minnesota Department of Labor & Industry.
This is a sample of licensing data; click here to access a complete history.
109
BuildZoom Score
Insured
| Insurer | Western National Assur Co |
| Insured up to | $1,000,000 |
Bonded
| Bonded Agent | Platte River Ins Co |
| Bond Value | $12,000 |
56
Permits
- Building permit records show that Mid States Mechanical Services Inc has worked on 56 permitted projects.
Mid States Mechanical Services Inc Employees
MD
Marilyn Duenberger
Owner
KD
Kent Durenberger
President
KD
Kent S Durenberger
Owner
KD
Kevin Durenberger
Owner
KD
Kevin S. Durenberger
KD
Kevin Scott Durenberger
MD
Marilyn Duenberger
MD
Marilyn Durenberger
Vice President