1,089 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Lockport: TR Miller Heating, Cooling, Plumbing and Electrical, CR Score 93/100; 4.9★ from 10,641 Google reviews; open 24/7.
Best for emergencies (open 24/7): TR Miller Heating, Cooling, Plumbing and Electrical, posts 24/7 hours; ranked #2 of 1,089.
Most-reviewed: Four Seasons Heating, Air Conditioning, Plumbing, & Electric, 27,709 Google reviews at 4.7★, the most of 1,089 ranked; ranked #7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
1,089 Lockport HVAC contractors are ranked here by CR Score, from 8 published factors. 473 are open 24/7, 830 open Saturdays and 670 open Sundays, based on posted hours. The median Google rating is 4.9★ across 1,089 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | TR Miller Heating, Cooling, Plumbing and Electrical | 93 | 4.9★ (10,641) | Plainfield, 9 mi away | 24/7 | Overall |
| 2 | TR Miller Heating, Cooling, Plumbing and Electrical | 91 | 4.9★ (2,423) | Tinley Park, 8 mi away | 24/7 | Emergencies |
| 3 | Comfort Services Heating & Air Conditioning | 90 | 4.9★ (1,422) | Plainfield, 9 mi away | 24/7 | — |
| 4 | Rousculp's Heating and Cooling | 90 | 5.0★ (353) | Crest Hill, 5 mi away | 24/7 | — |
| 5 | Precision Air | 90 | 5.0★ (584) | Plainfield, 9 mi away | 24/7 | — |
| 6 | All Temp Heating and Air Conditioning- Bolingbrook | 90 | 5.0★ (330) | Bolingbrook, 7 mi away | 24/7 | — |
| 7 | Four Seasons Heating, Air Conditioning, Plumbing, & Electric | 89 | 4.7★ (27,709) | Chicago, 19 mi away | 24/7 | Most reviews |
| 8 | Energy Services Air Conditioning & Heating Co. & Electrical | 89 | 4.9★ (1,929) | Naperville, 14 mi away | 24/7 | — |
| 9 | Air Source 1 Heating & Air Conditioning | 89 | 5.0★ (664) | Mokena, 13 mi away | 24/7 | — |
| 10 | Custom Seasons Heating & Cooling | 89 | 5.0★ (114) | Frankfort, 3 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Ranked #1 in Lockport
Based in Plainfield, 9 mi away
Ranked #1 because of its Google rating and availability: 4.9★ from 10,641 Google reviews, open 24/7.
Based in Tinley Park, 8 mi away
Ranked #2 because of its Google rating and availability: 4.9★ from 2,423 Google reviews, open 24/7.
Based in Plainfield, 9 mi away
Ranked #3 because of its Google rating and availability: 4.9★ from 1,422 Google reviews, open 24/7.
Based in Crest Hill, 5 mi away
Ranked #4 because of its Google rating and availability: 5.0★ from 353 Google reviews, open 24/7.
Based in Plainfield, 9 mi away
Ranked #5 because of its Google rating and availability: 5.0★ from 584 Google reviews, open 24/7.
Based in Bolingbrook, 7 mi away
Ranked #6 because of its Google rating and availability: 5.0★ from 330 Google reviews, open 24/7.
Based in Chicago, 19 mi away
Ranked #7 because of its Google rating and review volume: 4.7★ from 27,709 Google reviews, the most Google reviews on this list (27,709).
Based in Naperville, 14 mi away
Ranked #8 because of its Google rating and availability: 4.9★ from 1,929 Google reviews, open 24/7.
Based in Mokena, 13 mi away
Ranked #9 because of its Google rating and availability: 5.0★ from 664 Google reviews, open 24/7.
Based in Frankfort, 3 mi away
Ranked #10 because of its Google rating and availability: 5.0★ from 114 Google reviews, open 24/7.
Based in New Lenox, 8 mi away
Ranked #11 because of its Google rating and availability: 4.9★ from 435 Google reviews, open 24/7.
Based in Minooka, 14 mi away
Ranked #12 because of its Google rating and availability: 4.9★ from 1,501 Google reviews, open 24/7.
Based in Plainfield, 11 mi away
Ranked #13 because of its Google rating and availability: 5.0★ from 408 Google reviews, open 24/7.
Based in New Lenox, 9 mi away
Ranked #14 because of its Google rating and availability: 4.9★ from 539 Google reviews, open 24/7.
Based in Joliet, 4 mi away
Ranked #15 because of its Google rating and availability: 4.8★ from 301 Google reviews, open 24/7.
Based in Aurora, 15 mi away
Ranked #16 because of its Google rating and availability: 4.7★ from 5,573 Google reviews, open 24/7.
Based in Crestwood, 17 mi away
Ranked #17 because of its Google rating and availability: 4.8★ from 3,722 Google reviews, open 24/7.
Based in Bolingbrook, 8 mi away
Ranked #18 because of its Google rating and availability: 5.0★ from 162 Google reviews, open 24/7.
Based in Carol Stream, 21 mi away
Ranked #19 because of its Google rating and availability: 4.8★ from 7,723 Google reviews, open 24/7.
Based in Bridgeview, 15 mi away
Ranked #20 because of its Google rating and availability: 4.7★ from 4,200 Google reviews, open 24/7.
Based in Joliet, 6 mi away
Ranked #21 because of its Google rating and availability: 4.8★ from 290 Google reviews, open 24/7.
Based in Aurora, 18 mi away
Ranked #22 because of its Google rating and availability: 4.9★ from 1,637 Google reviews, open 24/7.
Based in Wheaton, 21 mi away
Ranked #23 because of its Google rating and availability: 5.0★ from 1,316 Google reviews, open 24/7.
Based in Lombard, 18 mi away
Ranked #24 because of its Google rating and availability: 4.8★ from 3,089 Google reviews, open 24/7.
Based in Lemont, 7 mi away
Ranked #25 because of its Google rating and availability: 5.0★ from 103 Google reviews, open 24/7.
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 1,089 ranked HVAC contractors here; the rest are on their profiles.
20 more HVAC contractors within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| A & Air Inc | 5.0★ (2) | 9 mi |
| A-Formula Mechanical Corporation | 5.0★ (2) | 8 mi |
| AAA Comfort Heating & Air Conditioning | 3.0★ (2) | 4 mi |
| Blue & Green #1 Services - Landscaping and HVAC | 5.0★ (2) | 5 mi |
| Caltemp Inc | 5.0★ (2) | 5 mi |
| Comfort Zone Service | 5.0★ (296) | 11 mi |
| Crown Home Services | 5.0★ (2) | 5 mi |
| Eclipse Heating & Air, Inc. | 4.0★ (2) | 9 mi |
| Fracaro Heating & Cooling | In Lockport | |
| Get Comfortable | 5.0★ (2) | 5 mi |
| Heat Medics Heating & Cooling, LLC | 5.0★ (131) | 8 mi |
| Ideal Home Temperature LLC | 5.0★ (2) | 8 mi |
| Joliet Boiler & Welding Co Inc | 5.0★ (2) | In Lockport |
| Jones Electric Heating and Cooling LLC | 5.0★ (2) | 9 mi |
| Knights HVAC | 5.0★ (2) | 8 mi |
| Polar Heating & AC | 4.6★ (899) | 11 mi |
| Quick Comfort Heating & Cooling | 5.0★ (2) | 3 mi |
| Southwest Mechanical, Inc | 3.0★ (2) | 9 mi |
| TODD's HVAC Services | 5.0★ (2) | 8 mi |
| Wind Crest Heating & Cooling | 5.0★ (2) | 7 mi |
National price ranges in USD, not adjusted for Lockport. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| AC replacement | $3,887 | $5,978 | $8,073 | Per system, installed (unit plus labor); typical range of customer-reported jobs. US national range | October 2026 |
| Furnace replacement | $2,823 | $4,814 | $6,896 | Per system, installed; typical range of customer-reported jobs. US national range | October 2026 |
In Illinois, furnace and heat pump calls peak in the coldest winter weeks and AC calls in summer heat waves. Spring and fall are the easiest times to book maintenance or a replacement.
We scored 1,089 Lockport HVAC contractors on 8 factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. Unknown factors are left out of the score, not counted as zero. Scores last refreshed October 22, 2026.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Lockport data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |