Updated: Apr 22, 2026
Location and Projects
Address
301 S CENTRAL AVE, Duluth, MN, 55807
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Northstar Mechanical Services
Northstar Mechanical Services, 301 S Central Ave, Duluth, MN holds a Mechanical Contractor Bond license and 2 other licenses according to the Minnesota license board.
Their BuildZoom score of 111 ranks in the top 4% of 77,973 Minnesota licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Northstar Mechanical Services, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Northstar Mechanical Services Contact Information
Phone Number: (218) 741-1055
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Address: 301 S CENTRAL AVE, Duluth, MN 55807
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Northstar Mechanical Services Duluth
Quality
111
96th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Northstar Mechanical Services has a BuildZoom score of 111, which places them above 96% of 77,973 contractors in Minnesota.
Activity
|
140 projects
|
2025 |
|
245 projects
|
2024 |
|
178 projects
|
2023 |
Our building permit records indicate that Northstar Mechanical Services has worked on at least
563.0 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
|
Home Additions |
|
525 projects
|
HVAC projects |
Analyzing permits over the last 4 years shows that Northstar Mechanical Services mostly works on
hvac project
and home addition
projects.
Pricing
|
122 projects
|
< $5k |
|
439 projects
|
$5k-$20k |
|
21 projects
|
$20k-$50k |
|
2 projects
|
$50k-$100k |
|
1 project
|
$100k-$250k |
|
1 project
|
$1mil+ |
The typical size of their permits is approximately $7,525. 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.
Northstar Mechanical Services Reviews
5 out of 5 stars, based on
1
review
-
By JudithJune 12, 2017Verified Hire
Building Permits by Northstar Mechanical Services
This is a sample of this contractor's permits. Click here to access their complete permit history.
Hvac (furnace or boiler replacement) - 1 or 2 family dwelling
2025-04-15
Remove existing weil-mclain draft induced side wall vented boiler. install new weil-mclain cgi draft induced side wall vented boiler where existing unit sits. existing and new boiler venting uses 3 venting. use existing vent access hole through basement bluestone wall. this weil-mclain boiler install comes with weil-mclain boiler installation kit: #30 expansion tank spirovent back flo... see more
Valuation:
$21,591
Permit #:
CSHVACR-2504-0273
Status:
issued
Fee:
$188
Permit Type:
N/A
Building Type:
N/A
Hvac (furnace or boiler replacement) - 1 or 2 family dwelling
2025-04-04
Drain and remove existing cadet high efficiency natural gas boiler. model number cdn070 serial number i14h10305827. install new navien nhb 95% high efficiency natural gas boiler. new navien nhb boiler to hang on wall where existing boiler hangs. existing cadet intake and exhaust runs uninsulated through garage attic. new navien boiler installation includes running new 2” pvc insulated... see more
Valuation:
$15,000
Permit #:
CSHVACR-2504-0248
Status:
final
Fee:
$188
Permit Type:
N/A
Building Type:
N/A
Hvac (furnace or boiler replacement) - 1 or 2 family dwelling
2025-04-03
Remove existing natural gas furnace. install new bosch 96% high efficiency two stage natural gas furnace. install new bosch bovd 20 seer2 heat pump. bosch 96% high efficiency furnace installation includes running new 2 pvc intake and exhaust venting through open basement side wall. install 6 riser. aprilaire 1610 filter box (4 filter good for 12 months). install new condensate pump an... see more
Valuation:
$23,455
Permit #:
CSHVACR-2504-0244
Status:
final
Fee:
$188
Permit Type:
N/A
Building Type:
N/A
Hvac (furnace or boiler replacement) - 1 or 2 family dwelling
2025-03-17
Remove old furnace. install new amana 96% two stage high efficiency forced air furnace. install new amana central air conditioner. install new steam humidifier. steam humidifier electrical will be billed separately. furnace installation includes the following: 6” riser box aprilaire 1610 return drop wireless thermostat condensate pump to basement sink. central air conditioner installa... see more
Valuation:
$14,852
Permit #:
CSHVACR-2503-0212
Status:
issued
Fee:
$188
Permit Type:
N/A
Building Type:
N/A
Hvac (air conditioner/fan/misc work) - 1 or 2 family dwelling
2025-03-13
Install gree three headed mini split system. gree multi head system will service the living room master bedroom and upstairs bedroom. install 30 000 btu gree outdoor ductless head pump on a pad and stand on west side of 5015 tioga street in duluth. install 12 000 btu mini split wall hanging head in master bedroom using 1/4 x 3/8 line set. install 18 000 btu wall hanging mini split in ... see more
Valuation:
$20,428
Permit #:
CSHVACR-2503-0207
Status:
issued
Fee:
$71
Permit Type:
N/A
Building Type:
N/A
Hvac (furnace or boiler replacement) - 1 or 2 family dwelling
2025-01-09
Installation of a navien ncb 190/080h - 95% efficient gas combi boiler. installation includes removal and disposal of old boiler and metal venting (includes removal of framed-in area around venting) cap chimney flush system f1 fernox protector gas piping pvc venting condensate electrical zone valves (x5) expansion tank air separator fill valve air vent circulating pump thermostats cop... see more
Valuation:
$15,228
Permit #:
CSHVACR-2501-0018
Status:
issued
Fee:
$188
Permit Type:
N/A
Building Type:
N/A
Hvac (air conditioner/fan/misc work) - 1 or 2 family dwelling
2025-05-15
Installation of a fujitsu 18 000 btu - standard temp mini split system. installation includes electrical condensate riser stand 18 000 btu condenser copper line set brown line hide 9 000 btu wall mounted head in northeast room 9 000 btu in southeast room startup of system permit and labor
Valuation:
$11,853
Permit #:
CSHVACR-2505-0352
Status:
issued
Fee:
$71
Permit Type:
N/A
Building Type:
N/A
Hvac (air conditioner/fan/misc work) - 1 or 2 family dwelling
2025-05-14
Install new gree 2 headed multi zone mini split. install and level 36 000 btu outdoor unit on a pad and stand on west side of home. install 18 000 btu single head in master bedroom. install 18 000 btu single head in upstairs living area. run line set in natural line hide from outdoor unit to indoor head. master bedroom head might need condensate pump to relive condensation if gravity ... see more
Valuation:
$10,800
Permit #:
CSHVACR-2505-0348
Status:
issued
Fee:
$71
Permit Type:
N/A
Building Type:
N/A
Hvac (air conditioner/fan/misc work) - 1 or 2 family dwelling
2025-06-04
Installation 24 000 btu gree head and 2.0 ton outdoor compressor. installation includes mounting 15’ line set outdoor pad and leveling r32 refrigerant charge and connections 15’ line hide whip and disconnect wall penetration sealant electrical requirements startup of system and full performance and safety checks
Valuation:
$9,917
Permit #:
CSHVACR-2505-0347
Status:
final
Fee:
$71
Permit Type:
N/A
Building Type:
N/A
Hvac (air conditioner/fan/misc work) - 1 or 2 family dwelling
2025-05-13
Installation of amana 2.0 ton 13.1 seer air conditioning system. installation includes removal and disposal of old unit new 2.0 ton condenser 20 feet copper line set a-coil system startup with full performance and safety checks amana warranty lifetime on condenser 10 years on parts northstar limited warranty one year on labor and craftsmanship
Valuation:
$6,089
Permit #:
CSHVACR-2505-0346
Status:
issued
Fee:
$71
Permit Type:
N/A
Building Type:
N/A
Hvac (air conditioner/fan/misc work) - 1 or 2 family dwelling
2025-05-06
Install gree 24 000 btu single head indoor and outdoor heat pump. outdoor heat pump to be installed using wall bracket on west side of home. install gree indoor head on west side wall. office curtains/curtain rod will need to be removed prior to installation. condensate to ground. line set will be ran in 4” brown line hide on side of home
Valuation:
$6,200
Permit #:
CSHVACR-2505-0331
Status:
issued
Fee:
$71
Permit Type:
N/A
Building Type:
N/A
Hvac (furnace or boiler replacement) - 1 or 2 family dwelling
2025-05-01
Remove old american standard furnace. install new amana 96% high efficiency natural gas forced air furnace. gas piping and sheet metal fabrication are included in this estimate. run new 2 pvc intake and exhaust venting through open basement joist. furnace will be installed on 6 riser to make up the 6 difference from old american standard to new amana furnace. allow healthier airflow t... see more
Valuation:
$7,445
Permit #:
CSHVACR-2504-0294
Status:
final
Fee:
$188
Permit Type:
N/A
Building Type:
N/A
Hvac (furnace or boiler replacement) - 1 or 2 family dwelling
2025-09-09
Provide labor and material for the following services: remove existing high efficiency natural gas forced air furnace. existing furnace dimensions are 16 wide 46 height on 2 block. plenum is 12 in height and transitions to a 21 wide from previous sheet metal fabrication. northstar services will modify plenum to fit new 17.5 wide furnace. return drop is 14 x 20. install new 2 pvc intak... see more
Valuation:
$6,900
Permit #:
CSHVACR-2504-0283
Status:
final
Fee:
$188
Permit Type:
N/A
Building Type:
N/A
Hvac (air conditioner/fan/misc work) - 1 or 2 family dwelling
2025-04-02
Nstallation amana 15.4 seer 2.5 ton condenser and a-coil. installation includes installation of cased a-coil and 2.5 condenser 15’ copper line set leveling pad whip and disconnect surge protector sheet metal fabrication startup of system and full safety checks
Valuation:
$8,445
Permit #:
CSHVACR-2504-0245
Status:
issued
Fee:
$71
Permit Type:
N/A
Building Type:
N/A
Hvac (air conditioner/fan/misc work) - 1 or 2 family dwelling
2025-03-18
Provide labor and material for the following services: install gree multi head 24 000 btu outdoor unit. install 18 000 btu gree mini split head in living room. 12 000 btu gree mini split head in master bedroom. all line hide line hide fittings and line set are included in this bid. outdoor unit to be placed on east side of home if foundation allows. unit will be placed on south side i... see more
Valuation:
$10,700
Permit #:
CSHVACR-2503-0218
Status:
issued
Fee:
$71
Permit Type:
N/A
Building Type:
N/A
Hvac (furnace or boiler replacement) - 1 or 2 family dwelling
2025-03-13
Silver - 2b1c supreme energy preferred heating installation to include amanda two stage furnace 80 000 btu. non programmable thermostat if desired by customer. piping of gas from meter to furnace electrical connections sheet metal fabrication permits new venting removal and disposal of existing furnace. warranty includes one year northstar workmanship guarantee: amana warranty of 10 y... see more
Valuation:
$9,960
Permit #:
CSHVACR-2503-0211
Status:
issued
Fee:
$188
Permit Type:
N/A
Building Type:
N/A
Hvac (furnace or boiler replacement) - 1 or 2 family dwelling
2025-03-13
Installation will include an amana 2 stage furnace april aire 1610 non programmable tstat. installation includes repairing the return as needed. electrical connection sheet metal fabrication new venting thru sidewall. removal of existing furnace and disposal
Valuation:
$8,040
Permit #:
CSHVACR-2503-0209
Status:
issued
Fee:
$188
Permit Type:
N/A
Building Type:
N/A
Hvac (furnace or boiler replacement) - 1 or 2 family dwelling
2025-03-11
Install two goodman 80% 60 000 btu gas furnaces. install includes removal and disposal of old equipment gas piping new venting electrical sheet metal fabrication start up permit and labor. warranty is 10 years on parts one year labor and limited lifetime heat exchanger warranty on furnace to original homeowner. install includes removal and disposal and clean up of all old equipment
Valuation:
$9,830
Permit #:
CSHVACR-2503-0202
Status:
issued
Fee:
$188
Permit Type:
N/A
Building Type:
N/A
Hvac (furnace or boiler replacement) - 1 or 2 family dwelling
2025-03-25
Provide labor and material for the following services: remove old furnace. install new amana 96% high efficiency natural gas forced air furnace. gas piping and sheet metal fabrication are included in this estimate. install new aprilaire 1610 return boot with an addition 4” filter. install 6” riser. install new thermostat to allow air conditioning application. install new amana central... see more
Valuation:
$11,562
Permit #:
CSHVACR-2503-0199
Status:
final
Fee:
$188
Permit Type:
N/A
Building Type:
N/A
Hvac (furnace or boiler replacement) - 1 or 2 family dwelling
2025-03-07
Installation of an amana 60 000 btu - 2 stage - 96% efficient gas furnace. installation includes removal and disposal of old furnace gas piping pvc venting condensate pump sheet metal fabrication electrical t-1 non-programmable thermostat startup of system permit and labor
Valuation:
$6,425
Permit #:
CSHVACR-2503-0189
Status:
issued
Fee:
$188
Permit Type:
N/A
Building Type:
N/A
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License # MB003940
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110
BZ Score
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Avg Project
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BZ Score
$1.5K
Avg Project
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License # BT060717
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Verified License
BuildZoom confirmed this contractor's license
Northstar Mechanical Services License info
Verified License
| License # | MB648791 |
| Status | Active |
| State | Minnesota |
| Type | Mechanical Contractor Bond |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Northstar Mechanical Services at the Minnesota Department of Labor & Industry.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | R281 |
| Status | Active |
| City | Duluth |
| Type | Hvac Cont |
- When BuildZoom last verified this license, it had an expiration date of December, 2024. Check the current license status of Northstar Mechanical Services with the The City of Duluth, MN
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | PC648791 |
| Status | Inactive |
| State | Minnesota |
| Type | Plumbing |
- 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 Northstar Mechanical Services at the Minnesota Department of Labor & Industry.
This is a sample of licensing data; click here to access a complete history.
111
BuildZoom Score
1.6K
Permits
- Building permit records show that Northstar Mechanical Services has worked on 1621 permitted projects.
Highly recommend Northstar Mechanical! Professional, promptly , and courteous!