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Emergency HVAC Contractors in Duluth, MN (2026)

Top 50 of 58 HVAC contractors, in emergency orderUpdated 0 paid placements in this rankingHow we rank

17 of the 50 HVAC contractors on this list post 24/7 hours. 24/7 businesses come first, then same-day, each ranked by CR Score with availability weighted higher.

If you smell gas, leave the building now and call your gas utility or 911 from outside.

The short answer

  1. 1

    #1 for emergency heating and cooling in Duluth: ASP Mechanical, open 24/7.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

Top emergency HVAC contractors in Duluth at a glance

Top emergency HVAC contractors in Duluth at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1ASP Mechanical684.8★ (1,645)Duluth24/7
2Stone Plumbing and Heating Inc.664.9★ (395)Duluth24/7
3Veterans Heating & Cooling644.9★ (101)Duluth24/7
4Plumbing and Heating Solutions Inc635.0★ (68)Duluth24/7
5Premier Plumbing and Heating LLC634.9★ (65)Duluth24/7
6Northland Air625.0★ (46)Duluth24/7
7A G O'Brien Plumbing & Heating Co624.8★ (362)Duluth24/7
8Advantage Air Plumbing, Heating, & Cooling624.6★ (48)Duluth24/7
9Advantage Air Plumbing, Heating and Cooling624.4★ (138)Superior, 5 mi away24/7
10Belknap Plumbing, Heating & Cooling614.4★ (63)Superior, 4 mi away24/7

Call an emergency HVAC contractor in Duluth now

24/7 hours mean the business says its phone is answered around the clock. Arrival time depends on where the crew is. Ask for an arrival window when you call.

The 50 emergency HVAC contractors in Duluth, ranked

24/7 first, then same-day service, then the rest. Each group is in CR Score order on emergency weights. The full ranking of all 58 is on the HVAC contractors page.

  1. Ranked #1 in Duluth

    #1 ASP Mechanical

    Based in Duluth

    68/100CR Score

    Ranked #1 because of its Google rating and review volume: 4.8★ from 1,645 Google reviews.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.8★ from 1,645 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    5028 Miller Trunk Hwy, Duluth, MN 55811
    View profile for ASP Mechanical(218) 203-9640

  3. #3 Veterans Heating & Cooling

    Based in Duluth

    64/100CR Score

    Ranked #3 because of its Google rating and trade focus: 4.9★ from 101 Google reviews, listed on Google as “HVAC contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.9★ from 101 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    4085 Jeffrey Rd, Duluth, MN 55810
    View profile for Veterans Heating & Cooling(218) 461-1911

  6. #6 Northland Air

    Based in Duluth

    62/100CR Score

    Ranked #6 because of its Google rating and trade focus: 5.0★ from 46 Google reviews, listed on Google as “HVAC contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 5.0★ from 46 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    View profile for Northland Air(218) 520-9232

  11. #11 Honest HVAC

    Based in Duluth

    60/100CR Score

    Ranked #11 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “HVAC contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 5.0★ from 11 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    View profile for Honest HVAC(218) 343-3231

  12. #12 Cosgriff Climate Control

    Based in Hermantown, 8 mi away

    60/100CR Score

    Ranked #12 because of its Google rating and trade focus: 5.0★ from 32 Google reviews, listed on Google as “HVAC contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 5.0★ from 32 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    5653 Morris Thomas Rd, Hermantown, MN 55810
    View profile for Cosgriff Climate Control(218) 729-7118

  13. #13 TruTemp Heating and Cooling

    Based in Cloquet, 15 mi away

    57/100CR Score

    Ranked #13 because of its Google rating and trade focus: 4.4★ from 40 Google reviews, listed on Google as “HVAC contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.4★ from 40 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    9 Hillside Rd, Esko, MN 55733
    View profile for TruTemp Heating and Cooling(218) 451-4677

  17. #17 Lavoie Plumbing Inc.

    Based in Cloquet, 14 mi away

    48/100CR Score

    Ranked #17 because of its Google rating and availability: 5.0★ from 3 Google reviews, open 24/7.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 5.0★ from 3 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    34 Himango Rd, Esko, MN 55733
    View profile for Lavoie Plumbing Inc.(218) 391-5357

  22. #22 Superior Fuel Company

    Based in Duluth

    46/100CR Score

    Ranked #22 because of its Google rating and trade focus: 4.5★ from 423 Google reviews, listed on Google as “HVAC contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.5★ from 423 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    5102 S Cant Rd, Duluth, MN 55804
    View profile for Superior Fuel Company(218) 722-2050

  23. #23 Design Heating, LLC

    Based in Duluth

    45/100CR Score

    Ranked #23 because of its Google rating and trade focus: 4.9★ from 101 Google reviews, listed on Google as “HVAC contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.9★ from 101 Google reviews
    Hours
    Mon–Fri 7 AM–7 PM · Sat–Sun closed
    Address
    5131 Washburn Rd, Duluth, MN 55803
    View profile for Design Heating, LLC(218) 525-5914

  24. #24 Superior Fuel Company

    Based in Superior, 4 mi away

    45/100CR Score

    Ranked #24 because of its Google rating and trade focus: 5.0★ from 154 Google reviews, listed on Google as “HVAC contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 5.0★ from 154 Google reviews
    Hours
    Mon–Fri 8 AM–4:30 PM · Sat–Sun closed
    Address
    1330 Tower Ave, Superior, WI 54880
    View profile for Superior Fuel Company(218) 722-2050

  25. #25 Krause Heating & Cooling

    Based in Duluth

    44/100CR Score

    Ranked #25 because of its Google rating and trade focus: 4.9★ from 84 Google reviews, listed on Google as “Heating contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.9★ from 84 Google reviews
    Hours
    Mon–Fri 8 AM–4:30 PM · Sat–Sun closed
    Address
    2020 W 1st St, Duluth, MN 55806
    View profile for Krause Heating & Cooling(218) 722-6354

Top 50 of 58 HVAC contractors by emergency score

#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile.

HVAC contractors in Duluth, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Twin Ports Custom Climate434.8★ (85)4 mi
27Aire Serv of Northeastern Minnesota434.8★ (427)16 mi
28Northland Comfort Heating & Cooling434.6★ (46)In Duluth
29Kalkbrenner Plumbing & Heating Inc435.0★ (215)In Duluth
30MMT Heating & Cooling424.7★ (27)In Duluth
31Carlson Duluth Company424.0★ (60)In Duluth
32Guthrie Plumbing & Heating424.8★ (18)In Duluth
33Sheet Metal Solutions, LLC414.7★ (18)In Duluth
34D G Solem & Sons415.0★ (13)In Duluth
35Sid Harvey Industries - HVAC/R Specialist Distributor414.3★ (15)In Duluth
36General Heating and Mechanical Inc.414.5★ (12)In Duluth
37HVAC Services: Heating & Air Conditioning415.0★ (9)In Duluth
38Duluth HVAC Services405.0★ (6)In Duluth
39Independence Heating & Cooling405.0★ (6)In Duluth
40Brent's Heating & Cooling404.6★ (96)17 mi
41Dryke Plumbing & Heating Inc.402.9★ (12)In Duluth
42Carlson Refrigeration404.8★ (9)4 mi
43United Refrigeration Inc395.0★ (4)In Duluth
44Stack Brothers Mechanical393.6★ (18)6 mi
45L&S Plumbing & Heating LLC395.0★ (9)7 mi
46UHL Company394.0★ (3)In Duluth
47Central Sheet Metal Works Inc.385.0★ (4)4 mi
48Fossum Plumbing & Heating LLC384.8★ (16)In Duluth
49Caldwell Plumbing & Heating374.3★ (19)In Duluth
50Bill's Plumbing & Heating LLC375.0★ (10)In Duluth

How we ranked emergency HVAC contractors in Duluth

Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 HVAC contractors are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.

Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed from
Reputation15%Google star rating, adjusted for how many reviews back it
Credentials15%Active state license, bond and workers’ comp on file
Review volume10%Number of Google reviews, compared with the most-reviewed business on the list
Recency5%Share of reviews from the last 12 months
Availability15%Weekly open hours, Saturday, Sunday, 24/7 or same-day
Trade focus10%How clearly the business does this trade (its Google category and name)
Proximity5%Based in the city scores highest, less the farther away it is
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodically
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there are

Emergency HVAC contractors in Duluth: questions

Which HVAC contractors in Duluth are open 24/7?

17 on this list post 24/7 hours, including ASP Mechanical, Stone Plumbing and Heating Inc., Veterans Heating & Cooling, Plumbing and Heating Solutions Inc and Premier Plumbing and Heating LLC.

Who is ranked #1 for emergency heating and cooling in Duluth, MN?

ASP Mechanical is #1, with a CR Score of 68 out of 100 on emergency weights.

How are emergency HVAC contractors in Duluth ranked?

Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 HVAC contractors are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.

What should I do before the HVAC contractor arrives?

If you smell gas, leave the building now and call your gas utility or 911 from outside.

How many emergency HVAC contractors here list a phone number?

25 of the 25 businesses ranked in full list a phone number. Tap Call to dial it.

Update log for Duluth

  1. October 2026: CR Scores recalculated for 58 hvac contractors serving Duluth.
  2. October 2026: 1 duplicate listing merged.

More emergency and heating and cooling pages

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