Skip to content
ContractorsRanked

Emergency HVAC Contractors in Saint Charles, IL (2026)

Top 50 of 1,107 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 Saint Charles: McNally's Heating and 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 Saint Charles at a glance

Top emergency HVAC contractors in Saint Charles at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1McNally's Heating and Cooling654.9★ (2,593)Batavia, 2 mi away24/7
2One Hour Heating & Air Conditioning654.9★ (1,873)Saint Charles24/7
3Comfort Masters Service Experts644.8★ (1,224)Geneva, 1 mi away24/7
4Blue Frost Heating & Cooling644.9★ (1,482)West Chicago, 4 mi away24/7
5Precision Today Plumbing Heating Cooling Electrical644.8★ (7,723)Carol Stream, 11 mi away24/7
6Chris Heating & Cooling645.0★ (942)West Chicago, 5 mi away24/7
7Perfect Home Services634.7★ (5,573)Aurora, 11 mi away24/7
8Borter Heating & Air Conditioning Co635.0★ (1,316)Wheaton, 9 mi away24/7
9Leith Heating and Cooling635.0★ (226)Saint Charles24/7
10TR Miller Heating, Cooling, Plumbing and Electrical634.9★ (10,641)Plainfield, 18 mi away24/7

Call an emergency HVAC contractor in Saint Charles 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 Saint Charles, 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 1,107 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.

  7. #7 Perfect Home Services

    Based in Aurora, 11 mi away

    63/100CR Score

    Ranked #7 because of its Google rating and trade focus: 4.7★ from 5,573 Google reviews, listed on Google as “HVAC contractor”.

    • 4.7★ from 5,573 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    4255 Meridian Pkwy Suite 101, Aurora, IL 60504
    View profile for Perfect Home Services(630) 519-6620

  14. #14 Doc's HVAC

    Based in Geneva, 1 mi away

    63/100CR Score

    Ranked #14 because of its Google rating and trade focus: 4.9★ from 278 Google reviews, listed on Google as “HVAC contractor”.

    • 4.9★ from 278 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    648 North St Suite 101, Geneva, IL 60134
    View profile for Doc's HVAC(630) 965-9444

  19. #19 ARS / Rescue Rooter

    Based in Itasca, 15 mi away

    62/100CR Score

    Ranked #19 because of its Google rating and trade focus: 4.7★ from 4,969 Google reviews, listed on Google as “HVAC contractor”.

    • 4.7★ from 4,969 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    731 District Dr, Itasca, IL 60143
    View profile for ARS / Rescue Rooter(630) 475-1987

  20. #20 AWE Air Water Energy

    Based in Carol Stream, 10 mi away

    62/100CR Score

    Ranked #20 because of its Google rating and trade focus: 4.8★ from 1,516 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 1,516 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    295 Carlton Dr, Carol Stream, IL 60188
    View profile for AWE Air Water Energy(630) 326-4520

  24. #24 G & R Heating and Air

    Based in Gilberts, 13 mi away

    62/100CR Score

    Ranked #24 because of its Google rating and trade focus: 4.8★ from 2,067 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 2,067 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    24 Center Dr Unit #9, Gilberts, IL 60136
    View profile for G & R Heating and Air(224) 850-3187

Top 50 of 1,107 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 Saint Charles, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Charles McDuffee Co. Heating & Air Conditioning624.9★ (422)8 mi
27On The Mark Heating and Air615.0★ (939)14 mi
28Brian's Heating & Air Conditioning614.8★ (336)6 mi
29Comfort Care Heating & Air Conditioning615.0★ (167)5 mi
30McNally's Heating & Cooling of Bartlett615.0★ (235)7 mi
31Residential Heating & Cooling614.9★ (905)12 mi
32Comfort Masters Service Experts614.8★ (1,645)14 mi
33American Mechanical Heating & Cooling614.9★ (60)In Saint Charles
34Youngren's, Inc. Heating & Cooling614.9★ (408)10 mi
35Phillips Heating & Cooling Services Inc. Powered by Legacy Home Services614.9★ (214)6 mi
36Chris Heating & Cooling615.0★ (75)2 mi
37Amazing Air Inc.614.8★ (322)8 mi
38Custom Service Heating & Cooling Inc.615.0★ (198)8 mi
39Eco Temp HVAC614.9★ (57)In Saint Charles
40Buchner Heating, Air & Plumbing614.9★ (440)11 mi
41JNL Climate Control, Inc.614.9★ (820)14 mi
42Nortek Environmental614.9★ (381)10 mi
43Advantage Heating & Cooling614.9★ (351)10 mi
44Comfort Pride Services615.0★ (319)11 mi
45Franzen Heating & Cooling614.9★ (396)11 mi
46Family Man Heating and Cooling615.0★ (530)14 mi
47Andersen Plumbing, Heating and AC Repair615.0★ (434)13 mi
48Full Force Heating & Air Conditioning615.0★ (126)6 mi
49AQC Services Inc HVAC & Appliance Repair605.0★ (286)11 mi
50Five Star Heating & Air, Inc.604.9★ (1,082)17 mi

How we ranked emergency HVAC contractors in Saint Charles

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 Saint Charles: questions

Which HVAC contractors in Saint Charles are open 24/7?

25 on this list post 24/7 hours, including McNally's Heating and Cooling, One Hour Heating & Air Conditioning, Comfort Masters Service Experts, Blue Frost Heating & Cooling and Precision Today Plumbing Heating Cooling Electrical.

Who is ranked #1 for emergency heating and cooling in Saint Charles, IL?

McNally's Heating and Cooling is #1, with a CR Score of 65 out of 100 on emergency weights.

How are emergency HVAC contractors in Saint Charles 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 Saint Charles

  1. October 2026: CR Scores recalculated for 1,107 hvac contractors serving Saint Charles.
  2. October 2026: 8 duplicate listings merged.

More emergency and heating and cooling pages