64/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.9★ from 576 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 576 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 830 Magnolia Ave, Gurnee, IL 60031
Best HVAC Contractors in Gurnee, IL (2026)
637 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Gurnee: Herchenbach Mechanical Inc., CR Score 64/100; 4.9★ from 576 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Cahill Heating, Cooling, Electric, Plumbing & Sewer, posts 24/7 hours; ranked #2 of 637.
- 4
Most-reviewed: ABC Plumbing, Sewer, Heating, Cooling & Electric, 22,524 Google reviews at 4.7★, the most of 637 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
637 Gurnee HVAC contractors are ranked here by CR Score, from ten published factors. 293 are open 24/7, 493 open Saturdays and 400 open Sundays, based on posted hours. The median Google rating is 4.9★ across 637 rated businesses.
Top 10 HVAC contractors in Gurnee at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Herchenbach Mechanical Inc. | 64 | 4.9★ (576) | Gurnee | 24/7 | Overall |
| 2 | Cahill Heating, Cooling, Electric, Plumbing & Sewer | 63 | 5.0★ (1,064) | Lake Bluff, 6 mi away | 24/7 | Emergencies |
| 3 | TopTec Heating, Cooling, Plumbing & Electrical | 63 | 4.8★ (2,018) | Libertyville, 6 mi away | 24/7 | — |
| 4 | ABC Plumbing, Sewer, Heating, Cooling & Electric | 63 | 4.7★ (22,524) | Arlington Heights, 17 mi away | 24/7 | Most reviews |
| 5 | Allied Air Conditioning & Heating Corp. | 62 | 5.0★ (428) | Libertyville, 6 mi away | 24/7 | — |
| 6 | Kern Heating & Cooling Co. | 62 | 4.7★ (1,162) | Beach Park, 5 mi away | 24/7 | — |
| 7 | Triple Tech Services | 62 | 4.8★ (232) | Gurnee | 24/7 | — |
| 8 | AA Service Co. | 62 | 4.9★ (3,150) | Northbrook, 16 mi away | 24/7 | — |
| 9 | Precision Today Plumbing Heating Cooling Electrical (Miller's Area Heating) | 62 | 4.8★ (986) | Grayslake, 7 mi away | 24/7 | — |
| 10 | SPG Plumbing, Drain and Sewer Gurnee | 62 | 5.0★ (103) | Gurnee | 24/7 | — |
The 637 best HVAC contractors in Gurnee, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Lake Bluff, 6 mi away
63/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 1,064 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 1,064 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 28983 N Herky Dr, Lake Bluff, IL 60044
Based in Libertyville, 6 mi away
63/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.8★ from 2,018 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 2,018 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 510 North Ave, Libertyville, IL 60048
Based in Arlington Heights, 17 mi away
63/100CR ScoreRanked #4 because of its Google rating and review volume: 4.7★ from 22,524 Google reviews, the most in Gurnee.
- 4.7★ from 22,524 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 220 W Campus Dr, Arlington Heights, IL 60004
Based in Libertyville, 6 mi away
62/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 428 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 428 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 203 Peterson Rd, Libertyville, IL 60048
Based in Beach Park, 5 mi away
62/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.7★ from 1,162 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 1,162 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- C4GW+R6, 38931 N Lewis Ave, Beach Park, IL 60099
Based in Gurnee
62/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.8★ from 232 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 232 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1800 Nations Dr Suite 177, Gurnee, IL 60031
Based in Northbrook, 16 mi away
62/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.9★ from 3,150 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 3,150 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 550 Anthony Trail, Northbrook, IL 60062
Based in Grayslake, 7 mi away
62/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.8★ from 986 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 986 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 112 Center St, Grayslake, IL 60030
Based in Gurnee
62/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 103 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 103 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3838 Grandview Ave, Gurnee, IL 60031
Based in McHenry, 21 mi away
62/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.9★ from 6,580 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 6,580 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1400 Miller Pkwy, McHenry, IL 60050
Based in Round Lake, 10 mi away
62/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.7★ from 2,290 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 2,290 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 600 Long Lake Dr, Round Lake, IL 60073
Based in Lake Forest, 7 mi away
61/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.9★ from 397 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 397 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 28354 Ballard Dr, Lake Forest, IL 60045
Based in Antioch, 12 mi away
61/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 745 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 745 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 315 Depot St, Antioch, IL 60002
#15 STVU Inc
Based in Gurnee
61/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 79 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 79 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 7458 Inglenook Ln, Gurnee, IL 60031
Based in Antioch, 13 mi away
61/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.9★ from 1,086 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,086 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 307 Main St Suite 106, Antioch, IL 60002
Based in Libertyville, 8 mi away
61/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 165 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 165 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1930 Innovation Wy, Libertyville, IL 60048
Based in Buffalo Grove, 15 mi away
60/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.7★ from 2,787 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 2,787 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 135 N Arlington Heights Rd Ste 180, Buffalo Grove, IL 60089
Based in Gurnee
60/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.8★ from 62 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 62 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Mundelein, 10 mi away
60/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 234 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 234 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 25975 N Diamond Lake Rd Ste 107, Mundelein, IL 60060
Based in Mundelein, 12 mi away
60/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 292 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 292 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 25741 Hillview Ct, Mundelein, IL 60060
Based in Mundelein, 10 mi away
60/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.9★ from 259 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 259 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 18880 Oak Ave, Mundelein, IL 60060
Based in Northbrook, 17 mi away
60/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 697 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 697 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1363 Shermer Rd Ste 214, Northbrook, IL 60062
Based in Highwood, 12 mi away
60/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 274 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 274 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 111 Washington Ave, Highwood, IL 60040
Based in Northbrook, 16 mi away
60/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.9★ from 861 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 861 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 675 Academy Dr, Northbrook, IL 60062
HVAC contractors ranked #26 to #50
#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 637 ranked HVAC contractors here; the rest are on their profiles.
Also serving Gurnee
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&t HVAC | 5.0★ (1) | In Gurnee |
| Celis HVAC | 5.0★ (2) | 11 mi |
| CHP Heating And Cooling | In Gurnee | |
| Custom Environmental Inc | In Gurnee | |
| G&G vargas | 5.0★ (2) | 9 mi |
| GO GREEN Heating & Cooling | 5.0★ (2) | 3 mi |
| Hendricks Heating & Cooling LTD | 5.0★ (1) | In Gurnee |
| Intelligent Service: Plumbing, Heating, Cooling & Drain Cleaning | 4.8★ (1,364) | 20 mi |
| IVTECH HEATING AND COOLING LLC | In Gurnee | |
| Mannina Creations | 5.0★ (2) | 12 mi |
| Midwest HVAC INC. | In Gurnee | |
| OVERALL HVAC LLC. | 3.0★ (2) | 6 mi |
| Ray's Heating & Cooling | 3.0★ (2) | 4 mi |
| Right Choice Heating & Cooling, Inc | In Gurnee | |
| Thermal Mechanical Inc. | 3.0★ (2) | 6 mi |
| TM3 HVAC - The Air Doctor | 1.0★ (1) | In Gurnee |
| Triplett Heating & Cooling, LLC | In Gurnee | |
| Weatherwise Heating & Air Conditioning | 5.0★ (2) | 3 mi |
| Williams Hvac etc | 5.0★ (2) | In Gurnee |
| Your Choice Cooling & Heating | In Gurnee |
How much do HVAC contractors cost in Gurnee?
National price ranges in USD, not adjusted for Gurnee. 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 |
When to hire an HVAC contractor in Illinois
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.
How we ranked Gurnee HVAC contractors
We scored 637 Gurnee HVAC contractors on ten 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. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, 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 Gurnee data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |
HVAC contractors in Gurnee: frequently asked questions
Who is the best HVAC contractor in Gurnee?
By CR Score, the highest-ranked HVAC contractor in Gurnee, IL is Herchenbach Mechanical Inc. with a CR Score of 64/100. It has 4.9★ from 576 Google reviews. It is open 24/7. Cahill Heating, Cooling, Electric, Plumbing & Sewer (#2) and TopTec Heating, Cooling, Plumbing & Electrical (#3) follow. We ranked 637 HVAC contractors on ten factors, last updated October 22, 2026.
How many HVAC contractors are there in Gurnee?
ContractorsRanked ranks 637 HVAC contractors serving Gurnee, IL. 7 of them are based in Gurnee; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.
Which HVAC contractors in Gurnee are open 24/7?
293 ranked HVAC contractors in Gurnee post 24/7 hours. The highest-ranked are Herchenbach Mechanical Inc. (#1), Cahill Heating, Cooling, Electric, Plumbing & Sewer (#2) and TopTec Heating, Cooling, Plumbing & Electrical (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which HVAC contractors in Gurnee work on weekends?
493 of 637 ranked HVAC contractors post Saturday hours and 400 post Sunday hours. The highest-ranked open Saturdays are Herchenbach Mechanical Inc. (#1), Cahill Heating, Cooling, Electric, Plumbing & Sewer (#2) and TopTec Heating, Cooling, Plumbing & Electrical (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does ac replacement cost in Gurnee?
AC replacement typically costs $3,887 to $8,073, with $5,978 typical (Per system, installed (unit plus labor); typical range of customer-reported jobs. US national range). This is a national range, not adjusted for Gurnee. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Gurnee HVAC contractors have?
The median Google rating among 637 rated HVAC contractors in Gurnee is 4.9★, with a median of 24 reviews. ABC Plumbing, Sewer, Heating, Cooling & Electric has the most, 22,524 reviews, and ranks #4. We adjust ratings for review count, so a few five-star reviews cannot top the list.
When is the best time to hire an HVAC contractor in Gurnee?
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.
How does ContractorsRanked rank HVAC contractors?
Each HVAC contractor gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Update log for Gurnee
- October 2026: CR Scores recalculated for 637 hvac contractors serving Gurnee.
- October 2026: 3 duplicate listings merged.
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