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Emergency HVAC Contractors in Delavan, WI (2026)

Top 50 of 108 HVAC contractors, in emergency orderUpdated 0 paid placements in this rankingHow we rank

25 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 Delavan: 24HR Home Comfort Services, 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 Delavan at a glance

Top emergency HVAC contractors in Delavan at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
124HR Home Comfort Services644.9★ (2,863)Milton, 18 mi away24/7
2Master Services Inc.644.7★ (976)Lake Geneva, 8 mi away24/7
3Edelman Heating, Cooling, Plumbing, Electric & Solar644.8★ (396)Elkhorn, 5 mi away24/7
4Air Systems, Inc.644.8★ (277)Elkhorn, 3 mi away24/7
5H. J. Faust, Inc. Heating and Air Conditioning624.9★ (1,340)Burlington, 20 mi away24/7
6Midwest Heating & Cooling624.8★ (2,376)Mukwonago, 23 mi away24/7
7American Heating And Air Plus LLC614.9★ (174)Lake Geneva, 10 mi away24/7
8Thielmann Heating, Cooling & Plumbing615.0★ (458)Burlington, 19 mi away24/7
9Woodstock Heating, Cooling & Electrical614.9★ (1,222)Woodstock, 24 mi away24/7
10Rock Valley Services, Inc.614.9★ (443)Janesville, 18 mi away24/7

Call an emergency HVAC contractor in Delavan 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 Delavan, 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 108 is on the HVAC contractors page.

Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

  2. #2 Master Services Inc.

    Based in Lake Geneva, 8 mi away

    64/100CR Score

    Ranked #2 because of its Google rating and trade focus: 4.7★ from 976 Google reviews, listed on Google as “HVAC contractor”.

    • 4.7★ from 976 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    N3481 Co Trunk H, Lake Geneva, WI 53147
    View profile for Master Services Inc.(262) 244-5650

  4. #4 Air Systems, Inc.

    Based in Elkhorn, 3 mi away

    64/100CR Score

    Ranked #4 because of its Google rating and trade focus: 4.8★ from 277 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 277 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    4520 Co Hwy F, Elkhorn, WI 53121
    View profile for Air Systems, Inc.(262) 728-1655

  11. #11 The Thielmann Group

    Based in Waterford, 24 mi away

    60/100CR Score

    Ranked #11 because of its Google rating and trade focus: 5.0★ from 448 Google reviews, listed on Google as “Heating contractor”.

    • 5.0★ from 448 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    107 N Milwaukee St, Waterford, WI 53185
    View profile for The Thielmann Group(262) 304-0009

Top 50 of 108 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 Delavan, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26C&C Heating & Air Conditioning554.7★ (28)23 mi
27Hudak Heating & Air Conditioning555.0★ (16)22 mi
28Stritzel Heating, Inc.554.3★ (6)14 mi
29Lake Geneva Heating And Cooling554.3★ (24)6 mi
30American Heating & Cooling554.7★ (28)24 mi
31Kinovate Heating, Cooling & Indoor Air Quality544.3★ (24)23 mi
32Kozy Comfort545.0★ (5)17 mi
33Tim Sargent Heating & Cooling544.0★ (20)22 mi
34Randy Fleming Heating & Air544.0★ (25)24 mi
35Schoof Heating & AC545.0★ (13)25 mi
36Elements Heating and Cooling533.2★ (9)20 mi
37Leader Mechanical Services Heating and Air conditioning535.0★ (6)22 mi
38A Plus HVAC LLC534.6★ (10)24 mi
3924/7 Home Comfort Services533.8★ (4)19 mi
40Berg Refridgeration LLC524.0★ (4)24 mi
41K & D Heating & Cooling LLC504.3★ (10)In Delavan
42Lenz Plumbing & Heating Inc492.3★ (3)19 mi
43Dale Heating & Air Conditioning455.0★ (5)12 mi
44Matts Geneva Clean454.9★ (145)In Delavan
45Germundson Heating & Cooling445.0★ (5)14 mi
46Appliance Repair Experts444.8★ (1,444)16 mi
47Infinity Heating & Cooling444.9★ (73)In Delavan
48Sanitary Plumbing & Heating Co445.0★ (8)20 mi
49Steve Gauger Plumbing & Heating434.2★ (10)21 mi
50J. C. Heating and Cooling, Inc.425.0★ (385)19 mi

How we ranked emergency HVAC contractors in Delavan

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 Delavan: questions

Which HVAC contractors in Delavan are open 24/7?

25 on this list post 24/7 hours, including 24HR Home Comfort Services, Master Services Inc., Edelman Heating, Cooling, Plumbing, Electric & Solar, Air Systems, Inc. and H. J. Faust, Inc. Heating and Air Conditioning.

Who is ranked #1 for emergency heating and cooling in Delavan, WI?

24HR Home Comfort Services is #1, with a CR Score of 64 out of 100 on emergency weights.

How are emergency HVAC contractors in Delavan 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?

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

Update log for Delavan

  1. October 2026: CR Scores recalculated for 108 hvac contractors serving Delavan.
  2. October 2026: 2 duplicate listings merged.

More emergency and heating and cooling pages