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Emergency HVAC Contractors in Lemont, IL (2026)

Top 50 of 1,438 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 Lemont: TR Miller Heating, Cooling, Plumbing and Electrical, 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 Lemont at a glance

Top emergency HVAC contractors in Lemont at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1TR Miller Heating, Cooling, Plumbing and Electrical654.9★ (10,641)Plainfield, 10 mi away24/7
2Four Seasons Heating, Air Conditioning, Plumbing, & Electric644.7★ (27,709)Chicago, 14 mi away24/7
3Four Seasons Heating, Air Conditioning, Plumbing, & Electric634.7★ (4,200)Bridgeview, 10 mi away24/7
4TR Miller Heating, Cooling, Plumbing and Electrical634.9★ (2,423)Tinley Park, 12 mi away24/7
5All Temp Heating and Air Conditioning- Bolingbrook625.0★ (330)Bolingbrook, 3 mi away24/7
6Energy Services Air Conditioning & Heating Co. & Electrical624.9★ (1,929)Naperville, 11 mi away24/7
7Perfect Home Services624.7★ (5,573)Aurora, 13 mi away24/7
8Precision Today Plumbing Heating Cooling Electrical624.8★ (7,723)Carol Stream, 16 mi away24/7
9Comfort Services Heating & Air Conditioning624.9★ (1,422)Plainfield, 10 mi away24/7
10Leslie Heating, Cooling, Plumbing, & Electric624.8★ (3,089)Lombard, 12 mi away24/7

Call an emergency HVAC contractor in Lemont 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 Lemont, 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 1,438 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, 13 mi away

    62/100CR 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

  17. #17 Precision Air

    Based in Plainfield, 10 mi away

    61/100CR Score

    Ranked #17 because of its Google rating and trade focus: 5.0★ from 584 Google reviews, listed on Google as “HVAC contractor”.

    • 5.0★ from 584 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    12515 Rhea Dr, Plainfield, IL 60585
    View profile for Precision Air(708) 726-4470

  19. #19 Renewed Air LLC

    Based in Bolingbrook, 5 mi away

    61/100CR Score

    Ranked #19 because of its Google rating and trade focus: 5.0★ from 162 Google reviews, listed on Google as “HVAC contractor”.

    • 5.0★ from 162 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    Carmel Ln, Bolingbrook, IL 60440
    View profile for Renewed Air LLC(630) 874-1010

  20. #20 Polar Heating & AC

    Based in Orland Park, 8 mi away

    61/100CR Score

    Ranked #20 because of its Google rating and trade focus: 4.6★ from 899 Google reviews, listed on Google as “HVAC contractor”.

    • 4.6★ from 899 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    13801 SW Hwy, Orland Park, IL 60462
    View profile for Polar Heating & AC(708) 260-8855

Top 50 of 1,438 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 Lemont, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Comfort Masters Service Experts614.8★ (1,645)16 mi
27Freedom Heating, Cooling & Electrical614.9★ (2,121)19 mi
28Rousculp's Heating and Cooling615.0★ (353)11 mi
29OneStop Pro Plumbing, Heating, Cooling & Electric614.9★ (836)15 mi
30Airco Heating & Cooling604.9★ (162)6 mi
31AWE Air Water Energy604.8★ (1,516)16 mi
32People's Heating and Cooling604.8★ (154)5 mi
33Service Express Heating and Air Conditioning604.9★ (897)15 mi
34A All Temp Inc. Heating & Cooling604.8★ (602)12 mi
35Air Care Heating & Cooling Company604.9★ (129)6 mi
36Andersen Plumbing, Heating and AC Repair604.9★ (1,637)18 mi
37ARS / Rescue Rooter604.7★ (4,969)21 mi
38Goodberlet Home Services604.8★ (648)12 mi
39Magtek Mechanical Heating & Cooling604.9★ (539)13 mi
40Home Comfort Systems604.8★ (111)4 mi
41King Heating, Cooling & Plumbing604.8★ (1,060)15 mi
42Comfort Zone Service605.0★ (296)12 mi
43All Seasons AC, Furnace & Water Heater Repair604.9★ (246)10 mi
44King Heating, Cooling & Plumbing604.8★ (783)14 mi
45McNally's Heating and Cooling604.9★ (2,593)22 mi
46Paragon Heating, Cooling, and Tankless604.9★ (823)16 mi
47Update Heating and Cooling Services604.9★ (435)13 mi
48Allegiance Heating & Cooling604.9★ (440)13 mi
49Chris Heating & Cooling605.0★ (942)18 mi
50Dutchman Heating and Cooling Inc.604.7★ (458)11 mi

How we ranked emergency HVAC contractors in Lemont

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 Lemont: questions

Which HVAC contractors in Lemont are open 24/7?

25 on this list post 24/7 hours, including TR Miller Heating, Cooling, Plumbing and Electrical, Four Seasons Heating, Air Conditioning, Plumbing, & Electric, Four Seasons Heating, Air Conditioning, Plumbing, & Electric, TR Miller Heating, Cooling, Plumbing and Electrical and All Temp Heating and Air Conditioning- Bolingbrook.

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

TR Miller Heating, Cooling, Plumbing and Electrical is #1, with a CR Score of 65 out of 100 on emergency weights.

How are emergency HVAC contractors in Lemont 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 Lemont

  1. October 2026: CR Scores recalculated for 1,438 hvac contractors serving Lemont.
  2. October 2026: 14 duplicate listings merged.

More emergency and heating and cooling pages