686 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in North Chicago: Cahill Heating, Cooling, Electric, Plumbing & Sewer, CR Score 92/100; 5.0★ from 1,064 Google reviews; open 24/7.
Best for emergencies (open 24/7): TopTec Heating, Cooling, Plumbing & Electrical, posts 24/7 hours; ranked #2 of 686.
Most-reviewed: ABC Plumbing, Sewer, Heating, Cooling & Electric, 22,524 Google reviews at 4.7★, the most of 686 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
686 North Chicago HVAC contractors are ranked here by CR Score, from 8 published factors. 308 are open 24/7, 532 open Saturdays and 431 open Sundays, based on posted hours. The median Google rating is 4.9★ across 686 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Cahill Heating, Cooling, Electric, Plumbing & Sewer | 92 | 5.0★ (1,064) | Lake Bluff, 4 mi away | 24/7 | Overall |
| 2 | TopTec Heating, Cooling, Plumbing & Electrical | 91 | 4.8★ (2,018) | Libertyville, 6 mi away | 24/7 | Emergencies |
| 3 | AA Service Co. | 91 | 4.9★ (3,150) | Northbrook, 13 mi away | 24/7 | — |
| 4 | ABC Plumbing, Sewer, Heating, Cooling & Electric | 91 | 4.7★ (22,524) | Arlington Heights, 15 mi away | 24/7 | Most reviews |
| 5 | Herchenbach Mechanical Inc. | 90 | 4.9★ (576) | Gurnee, 4 mi away | 24/7 | — |
| 6 | Allied Air Conditioning & Heating Corp. | 90 | 5.0★ (428) | Libertyville, 7 mi away | 24/7 | — |
| 7 | Ireland Heating & Air Conditioning Co. | 90 | 4.9★ (397) | Lake Forest, 5 mi away | 24/7 | — |
| 8 | Azrikam The Price Is Right Heating & Air Conditioning HVAC | 89 | 5.0★ (697) | Northbrook, 14 mi away | 24/7 | — |
| 9 | Beck’s Heating and Air Conditioning | 89 | 5.0★ (274) | Highwood, 8 mi away | 24/7 | — |
| 10 | Kern Heating & Cooling Co. | 89 | 4.7★ (1,162) | Beach Park, 7 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 North Chicago
Based in Lake Bluff, 4 mi away
Ranked #1 because of its Google rating and availability: 5.0★ from 1,064 Google reviews, open 24/7.
Based in Libertyville, 6 mi away
Ranked #2 because of its Google rating and availability: 4.8★ from 2,018 Google reviews, open 24/7.
Based in Northbrook, 13 mi away
Ranked #3 because of its Google rating and availability: 4.9★ from 3,150 Google reviews, open 24/7.
Based in Arlington Heights, 15 mi away
Ranked #4 because of its Google rating and review volume: 4.7★ from 22,524 Google reviews, the most Google reviews on this list (22,524).
Based in Gurnee, 4 mi away
Ranked #5 because of its Google rating and availability: 4.9★ from 576 Google reviews, open 24/7.
Based in Libertyville, 7 mi away
Ranked #6 because of its Google rating and availability: 5.0★ from 428 Google reviews, open 24/7.
Based in Lake Forest, 5 mi away
Ranked #7 because of its Google rating and availability: 4.9★ from 397 Google reviews, open 24/7.
Based in Northbrook, 14 mi away
Ranked #8 because of its Google rating and availability: 5.0★ from 697 Google reviews, open 24/7.
Based in Highwood, 8 mi away
Ranked #9 because of its Google rating and availability: 5.0★ from 274 Google reviews, open 24/7.
Based in Beach Park, 7 mi away
Ranked #10 because of its Google rating and availability: 4.7★ from 1,162 Google reviews, open 24/7.
Based in McHenry, 23 mi away
Ranked #11 because of its Google rating and availability: 4.9★ from 6,580 Google reviews, open 24/7.
Based in Grayslake, 10 mi away
Ranked #12 because of its Google rating and availability: 4.8★ from 986 Google reviews, open 24/7.
Based in Northbrook, 13 mi away
Ranked #13 because of its Google rating and availability: 4.9★ from 861 Google reviews, open 24/7.
Based in Highland Park, 11 mi away
Ranked #14 because of its Google rating and availability: 5.0★ from 288 Google reviews, open 24/7.
Based in Gurnee, 4 mi away
Ranked #15 because of its Google rating and availability: 5.0★ from 103 Google reviews, open 24/7.
Based in Mundelein, 10 mi away
Ranked #16 because of its Google rating and availability: 5.0★ from 234 Google reviews, open 24/7.
Based in Antioch, 17 mi away
Ranked #17 because of its Google rating and availability: 5.0★ from 745 Google reviews, open 24/7.
Based in Fox Lake, 12 mi away
Ranked #18 because of its Google rating and availability: 5.0★ from 340 Google reviews, open 24/7.
Based in Rolling Meadows, 19 mi away
Ranked #19 because of its Google rating and availability: 5.0★ from 1,104 Google reviews, open 24/7.
Based in Prospect Heights, 16 mi away
Ranked #20 because of its Google rating and availability: 4.9★ from 1,120 Google reviews, open 24/7.
Based in Libertyville, 9 mi away
Ranked #21 because of its Google rating and availability: 5.0★ from 165 Google reviews, open 24/7.
Based in Buffalo Grove, 12 mi away
Ranked #22 because of its Google rating and availability: 5.0★ from 285 Google reviews, open 24/7.
Based in Buffalo Grove, 14 mi away
Ranked #23 because of its Google rating and availability: 4.7★ from 2,787 Google reviews, open 24/7.
Based in Round Lake, 13 mi away
Ranked #24 because of its Google rating and availability: 4.7★ from 2,290 Google reviews, open 24/7.
Based in Mundelein, 12 mi away
Ranked #25 because of its Google rating and availability: 5.0★ from 292 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 686 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 |
|---|---|---|
| Allied Air Conditioning & Heating Corp. | 4.9★ (473) | 18 mi |
| Capitol Energy | 5.0★ (2) | 16 mi |
| Coolidge Commercial Heat & Air Conditioning | In North Chicago | |
| Coolidge Commercial Heat & Air Conditioning | In North Chicago | |
| Furnace & Heating (NEAR ME) | 5.0★ (2) | 12 mi |
| G&G vargas | 5.0★ (2) | 12 mi |
| GO GREEN Heating & Cooling | 5.0★ (2) | 3 mi |
| HeatForce Furnace Repair HVAC | 5.0★ (2) | 14 mi |
| Indoor Weather | 5.0★ (2) | 12 mi |
| Legacy Refrigeration | 5.0★ (18) | 1 mi |
| Mannina Creations | 5.0★ (2) | 16 mi |
| OVERALL HVAC LLC. | 3.0★ (2) | 7 mi |
| Ray's Heating & Cooling | 3.0★ (2) | In North Chicago |
| Tem Control HVAC | 5.0★ (2) | 13 mi |
| Thermal Mechanical Inc. | 3.0★ (2) | 8 mi |
| THERMATRONIC INC. | 5.0★ (2) | 15 mi |
| Titan Heating and Cooling Service | In North Chicago | |
| TM HVAC contractor | 5.0★ (2) | 16 mi |
| United Air Control Corp | 3.0★ (2) | 12 mi |
| Weatherwise Heating & Air Conditioning | 5.0★ (2) | 6 mi |
National price ranges in USD, not adjusted for North Chicago. 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 686 North Chicago 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 North Chicago 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 |