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Emergency HVAC Contractors in Lockport, IL (2026)

Top 50 of 1,065 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 Lockport: 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 Lockport at a glance

Top emergency HVAC contractors in Lockport at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1TR Miller Heating, Cooling, Plumbing and Electrical654.9★ (10,641)Plainfield, 9 mi away24/7
2TR Miller Heating, Cooling, Plumbing and Electrical634.9★ (2,423)Tinley Park, 8 mi away24/7
3Four Seasons Heating, Air Conditioning, Plumbing, & Electric634.7★ (27,709)Chicago, 19 mi away24/7
4Comfort Services Heating & Air Conditioning634.9★ (1,422)Plainfield, 9 mi away24/7
5Rousculp's Heating and Cooling625.0★ (353)Crest Hill, 5 mi away24/7
6Perfect Home Services624.7★ (5,573)Aurora, 15 mi away24/7
7Precision Air625.0★ (584)Plainfield, 9 mi away24/7
8Energy Services Air Conditioning & Heating Co. & Electrical624.9★ (1,929)Naperville, 14 mi away24/7
9All Temp Heating and Air Conditioning- Bolingbrook625.0★ (330)Bolingbrook, 7 mi away24/7
10Four Seasons Heating, Air Conditioning, Plumbing, & Electric624.7★ (4,200)Bridgeview, 15 mi away24/7

Call an emergency HVAC contractor in Lockport 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 Lockport, 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 1,065 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.

  6. #6 Perfect Home Services

    Based in Aurora, 15 mi away

    62/100CR Score

    Ranked #6 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

  7. #7 Precision Air

    Based in Plainfield, 9 mi away

    62/100CR Score

    Ranked #7 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

  25. #25 Renewed Air LLC

    Based in Bolingbrook, 8 mi away

    60/100CR Score

    Ranked #25 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

Top 50 of 1,065 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 Lockport, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Comfort Zone Service605.0★ (296)11 mi
27Andersen Plumbing, Heating and AC Repair604.9★ (1,637)18 mi
28Polar Heating & AC604.6★ (899)11 mi
29A All Temp Inc. Heating & Cooling604.8★ (602)13 mi
30ABC Plumbing, Sewer, Heating, Cooling & Electric604.8★ (1,107)15 mi
31People's Heating and Cooling604.8★ (154)6 mi
32TemperaturePro Heating, Cooling & Indoor Air Quality604.8★ (440)11 mi
33DL Comfort Control604.7★ (47)In Lockport
34Comfortmate Bremen Service604.9★ (428)13 mi
354 Corners Heating & Cooling605.0★ (70)5 mi
36AAA Heating and Cooling Inc605.0★ (103)7 mi
37Allegiance Heating & Cooling604.9★ (440)13 mi
38Precision Heating and Cooling604.9★ (842)17 mi
39Update Heating and Cooling Services605.0★ (30)In Lockport
40Airco Heating & Cooling604.9★ (162)9 mi
41All Seasons AC, Furnace & Water Heater Repair604.9★ (246)11 mi
42Borter Heating & Air Conditioning Co605.0★ (1,316)21 mi
43Climate Control Systems604.9★ (430)14 mi
44Fire 'n' Ice Heating & Cooling, Inc.604.9★ (471)14 mi
45Integrity Heating & Cooling604.5★ (816)11 mi
46The Heat Engineering Co.604.9★ (623)15 mi
47Heat Medics Heating & Cooling, LLC605.0★ (131)8 mi
48FREEZE-R-BURN605.0★ (37)3 mi
49Air Care Heating & Cooling Company604.9★ (129)9 mi
50Climate Master Mechanical Contractors, Inc. DBA Doornbos Heating & Air Conditioning604.9★ (282)13 mi

How we ranked emergency HVAC contractors in Lockport

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 Lockport: questions

Which HVAC contractors in Lockport are open 24/7?

25 on this list post 24/7 hours, including TR Miller Heating, Cooling, Plumbing and Electrical, TR Miller Heating, Cooling, Plumbing and Electrical, Four Seasons Heating, Air Conditioning, Plumbing, & Electric, Comfort Services Heating & Air Conditioning and Rousculp's Heating and Cooling.

Who is ranked #1 for emergency heating and cooling in Lockport, 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 Lockport 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 Lockport

  1. October 2026: CR Scores recalculated for 1,065 hvac contractors serving Lockport.
  2. October 2026: 13 duplicate listings merged.

More emergency and heating and cooling pages