1,107 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Saint Charles: McNally's Heating and Cooling, CR Score 65/100; 4.9★ from 2,593 Google reviews; open 24/7.
Best for emergencies (open 24/7): One Hour Heating & Air Conditioning, posts 24/7 hours; ranked #2 of 1,107.
Most-reviewed: ABC Plumbing, Sewer, Heating, Cooling & Electric, 22,524 Google reviews at 4.7★, the most of 1,107 ranked; ranked #22.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
1,107 Saint Charles HVAC contractors are ranked here by CR Score, from ten published factors. 502 are open 24/7, 824 open Saturdays and 688 open Sundays, based on posted hours. The median Google rating is 4.9★ across 1,107 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | McNally's Heating and Cooling | 65 | 4.9★ (2,593) | Batavia, 2 mi away | 24/7 | Overall |
| 2 | One Hour Heating & Air Conditioning | 65 | 4.9★ (1,873) | Saint Charles | 24/7 | Emergencies |
| 3 | Blue Frost Heating & Cooling | 64 | 4.9★ (1,482) | West Chicago, 4 mi away | 24/7 | — |
| 4 | Comfort Masters Service Experts | 64 | 4.8★ (1,224) | Geneva, 1 mi away | 24/7 | — |
| 5 | Chris Heating & Cooling | 64 | 5.0★ (942) | West Chicago, 5 mi away | 24/7 | — |
| 6 | Precision Today Plumbing Heating Cooling Electrical | 63 | 4.8★ (7,723) | Carol Stream, 11 mi away | 24/7 | — |
| 7 | Borter Heating & Air Conditioning Co | 63 | 5.0★ (1,316) | Wheaton, 9 mi away | 24/7 | — |
| 8 | Kustom Heating and Cooling | 63 | 5.0★ (1,021) | Elgin, 8 mi away | 24/7 | — |
| 9 | Leith Heating and Cooling | 63 | 5.0★ (226) | Saint Charles | 24/7 | — |
| 10 | TR Miller Heating, Cooling, Plumbing and Electrical | 63 | 4.9★ (10,641) | Plainfield, 18 mi away | 24/7 | — |
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.
Ranked #1 because of its Google rating and trade focus: 4.9★ from 2,593 Google reviews, listed on Google as “HVAC contractor”.
Based in Saint Charles
Ranked #2 because of its Google rating and trade focus: 4.9★ from 1,873 Google reviews, listed on Google as “HVAC contractor”.
Based in West Chicago, 4 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 1,482 Google reviews, listed on Google as “HVAC contractor”.
Based in Geneva, 1 mi away
Ranked #4 because of its Google rating and trade focus: 4.8★ from 1,224 Google reviews, listed on Google as “HVAC contractor”.
Based in West Chicago, 5 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 942 Google reviews, listed on Google as “HVAC contractor”.
Based in Carol Stream, 11 mi away
Ranked #6 because of its Google rating and trade focus: 4.8★ from 7,723 Google reviews, listed on Google as “HVAC contractor”.
Based in Wheaton, 9 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 1,316 Google reviews, listed on Google as “HVAC contractor”.
Based in Elgin, 8 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 1,021 Google reviews, listed on Google as “HVAC contractor”.
Based in Saint Charles
Ranked #9 because of its Google rating and trade focus: 5.0★ from 226 Google reviews, listed on Google as “HVAC contractor”.
Based in Plainfield, 18 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 10,641 Google reviews, listed on Google as “HVAC contractor”.
Based in Elgin, 13 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 3,222 Google reviews, listed on Google as “HVAC contractor”.
Based in Saint Charles
Ranked #12 because of its Google rating and trade focus: 5.0★ from 194 Google reviews, listed on Google as “HVAC contractor”.
Based in Aurora, 11 mi away
Ranked #13 because of its Google rating and trade focus: 4.7★ from 5,573 Google reviews, listed on Google as “HVAC contractor”.
Based in Geneva, 1 mi away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 278 Google reviews, listed on Google as “HVAC contractor”.
Based in Naperville, 12 mi away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 1,929 Google reviews, listed on Google as “HVAC contractor”.
Based in Aurora, 12 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 1,637 Google reviews, listed on Google as “HVAC contractor”.
Based in Elgin, 11 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 784 Google reviews, listed on Google as “HVAC contractor”.
Based in Elgin, 11 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 776 Google reviews, listed on Google as “HVAC contractor”.
Based in Geneva, 2 mi away
Ranked #19 because of its Google rating and trade focus: 4.7★ from 476 Google reviews, listed on Google as “HVAC contractor”.
Based in Carol Stream, 10 mi away
Ranked #20 because of its Google rating and trade focus: 4.8★ from 1,516 Google reviews, listed on Google as “HVAC contractor”.
Based in Bartlett, 7 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 882 Google reviews, listed on Google as “HVAC contractor”.
Based in Arlington Heights, 23 mi away
Ranked #22 because of its Google rating and review volume: 4.7★ from 22,524 Google reviews, the most in Saint Charles.
Based in Itasca, 15 mi away
Ranked #23 because of its Google rating and trade focus: 4.7★ from 4,969 Google reviews, listed on Google as “HVAC contractor”.
Based in Lombard, 15 mi away
Ranked #24 because of its Google rating and trade focus: 4.8★ from 3,089 Google reviews, listed on Google as “HVAC contractor”.
Based in Hoffman Estates, 14 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 939 Google reviews, listed on Google as “HVAC contractor”.
#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 1,107 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 |
|---|---|---|
| Ace Comfort Care LLC | 5.0★ (2) | 8 mi |
| AiRod Heating And Cooling | 5.0★ (2) | 10 mi |
| All In 01 Services | 5.0★ (2) | 4 mi |
| AM to PM Heating & Cooling | 5.0★ (2) | 9 mi |
| Arrow Plumbing & Heating | In Saint Charles | |
| Chris Heating & Cooling | 5.0★ (75) | 2 mi |
| Countryview heating and cooling | 5.0★ (2) | 8 mi |
| D O C's HVAC Inc | 5.0★ (2) | 6 mi |
| Elite Heating and Cooling LLC | 5.0★ (2) | 8 mi |
| Faith Mechanical, Inc. | 2.5★ (2) | 8 mi |
| Five Star Heating & Air, Inc. | 4.9★ (1,082) | 17 mi |
| Heating & Air Conditioning | 3.0★ (2) | 11 mi |
| HVAC Options Inc | 5.0★ (2) | In Saint Charles |
| J.L. Wagner Plumbing | 4.8★ (23) | In Saint Charles |
| LE Heating And Cooling | 5.0★ (2) | 9 mi |
| Marc's Heating & Cooling | 5.0★ (2) | 8 mi |
| Neighbors West Heating & cooling | 4.5★ (2) | 11 mi |
| Northway Heating, Cooling & Sheet Metal, Inc. | 5.0★ (2) | 9 mi |
| OneStop Pro Plumbing, Heating, Cooling & Electric | 4.9★ (836) | 10 mi |
| Tamarack Heating & Cooling Inc | 5.0★ (2) | 11 mi |
National price ranges in USD, not adjusted for Saint Charles. 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 1,107 Saint Charles 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 Saint Charles 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 |