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Emergency HVAC Contractors in Greendale, WI (2026)

Top 50 of 322 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 Greendale: Roman Home Services - Electric, Plumbing, Heating & Cooling, 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 Greendale at a glance

Top emergency HVAC contractors in Greendale at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Roman Home Services - Electric, Plumbing, Heating & Cooling954.9★ (5,231)West Allis, 5 mi away24/7
2Thielmann Heating, Cooling & Plumbing934.9★ (1,665)New Berlin, 7 mi away24/7
3New Berlin Heating & Air Conditioning934.9★ (1,158)New Berlin, 7 mi away24/7
4Southport Home Services924.8★ (2,067)Caledonia, 9 mi away24/7
51st Choice Heating & Cooling924.9★ (1,076)Muskego, 9 mi away24/7
6Mr. Holland's Home Services924.8★ (1,334)New Berlin, 8 mi away24/7
7Third Coast HVAC, AC & Furnace Repair915.0★ (436)Brookfield, 7 mi away24/7
8Heating and Cooling Drs of West Allis, Milwaukee and New Berlin LLC914.9★ (288)Milwaukee, 4 mi away24/7
9Quality Heating, Cooling, Plumbing & Electric914.9★ (1,113)Brookfield, 12 mi away24/7
10Capital Heating, Cooling, Electric, and Plumbing914.7★ (2,977)Menomonee Falls, 13 mi away24/7

Call an emergency HVAC contractor in Greendale 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 Greendale, 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 322 is on the HVAC contractors page.

Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

Top 50 of 322 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 Greendale, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Tony's Heating & Air905.0★ (59)1 mi
27Over the Moon Heating, Air & Electric904.6★ (1,249)11 mi
28Aire Serv of West Allis894.7★ (213)4 mi
29Interstate Heating Co., Inc.894.9★ (932)17 mi
30Absolute Comfort HVAC LLC895.0★ (262)12 mi
31First Call Heating & Cooling894.9★ (1,103)19 mi
32The Thielmann Group895.0★ (448)16 mi
33Air Solutions Heating & Cooling, LLC895.0★ (115)8 mi
34West Allis Heating, Cooling, Plumbing, and Electrical894.8★ (2,148)6 mi
35Professional Services Heating, AC & Electric Repair895.0★ (682)20 mi
36Gregg Heating & Air Conditioning885.0★ (81)8 mi
37Skye Heating & Air Conditioning LLC884.8★ (78)5 mi
38Uttke Heating & Cooling884.7★ (107)5 mi
39H. J. Faust, Inc. Heating and Air Conditioning884.9★ (1,340)24 mi
40HoneyCreek Heating, Cooling & Electric, LLC885.0★ (279)17 mi
41Absolute Comfort HVAC LLC885.0★ (201)16 mi
42Premium Heating & Cooling885.0★ (40)5 mi
43Icy Hot Heating & Cooling884.9★ (62)7 mi
44Heating & Cooling Solutions LLC884.8★ (601)19 mi
45Thielmann Heating, Cooling & Plumbing884.9★ (487)20 mi
46Pro Tech Mechanical874.8★ (189)13 mi
47Hales Corners Heating and Air Conditioning874.3★ (140)3 mi
48Oasis Heating & Air Conditioning LLC874.9★ (90)11 mi
49Thielmann Heating, Cooling & Plumbing875.0★ (458)23 mi
50Ramos Heating and Cooling875.0★ (36)7 mi

How we ranked emergency HVAC contractors in Greendale

Emergency lists move 10 points of the CR Score from reputation to availability: 25% and 20%. 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
Reputation25%Bayesian-adjusted Google star rating
Credentials15%Active state license 0.6, bond 0.2, workers’ comp 0.2
Review volume10%log10(reviews + 1) against the list maximum
Recency10%Share of reviews from the last 12 months
Availability20%Weekly open hours, Saturday, Sunday, 24/7 or same-day
Trade focus10%Google main category 1.0, business name 0.7, additional category 0.5
Proximity5%1.0 when based in the city, falling to 0 at the trade’s radius
Completeness5%Website, photos, description, hours, claimed profile (0.2 each)

Emergency HVAC contractors in Greendale: questions

Which HVAC contractors in Greendale are open 24/7?

25 on this list post 24/7 hours, including Roman Home Services - Electric, Plumbing, Heating & Cooling, Thielmann Heating, Cooling & Plumbing, New Berlin Heating & Air Conditioning, Southport Home Services and 1st Choice Heating & Cooling.

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

Roman Home Services - Electric, Plumbing, Heating & Cooling is #1, with a CR Score of 95 out of 100 on emergency weights.

How are emergency HVAC contractors in Greendale ranked?

Emergency lists move 10 points of the CR Score from reputation to availability: 25% and 20%. 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 Greendale

  1. October 2026: CR Scores recalculated for 322 hvac contractors serving Greendale.
  2. October 2026: 5 duplicate listings merged.

More emergency and heating and cooling pages