973 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Markham: Four Seasons Heating, Air Conditioning, Plumbing, & Electric, CR Score 64/100; 4.8★ from 3,722 Google reviews; open 24/7.
Best for emergencies (open 24/7): Four Seasons Heating, Air Conditioning, Plumbing, & Electric, posts 24/7 hours; ranked #2 of 973.
Most-reviewed: Four Seasons Heating, Air Conditioning, Plumbing, & Electric, 27,709 Google reviews at 4.7★, the most of 973 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
973 Markham HVAC contractors are ranked here by CR Score, from ten published factors. 390 are open 24/7, 754 open Saturdays and 579 open Sundays, based on posted hours. The median Google rating is 4.9★ across 973 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Four Seasons Heating, Air Conditioning, Plumbing, & Electric | 64 | 4.8★ (3,722) | Crestwood, 4 mi away | 24/7 | Overall |
| 2 | Four Seasons Heating, Air Conditioning, Plumbing, & Electric | 64 | 4.7★ (27,709) | Chicago, 12 mi away | 24/7 | Emergencies, Most reviews |
| 3 | King Heating, Cooling & Plumbing | 64 | 4.7★ (3,996) | Oak Forest, 2 mi away | 24/7 | — |
| 4 | Hoekstra Heating & Air Conditioning | 63 | 4.9★ (2,200) | Homewood, 3 mi away | Sat · Sun · Evenings | — |
| 5 | Air Source 1 Heating & Air Conditioning | 62 | 5.0★ (664) | Mokena, 8 mi away | 24/7 | — |
| 6 | Precision Heating and Cooling | 62 | 4.9★ (842) | Alsip, 7 mi away | 24/7 | — |
| 7 | Four Seasons Heating, Air Conditioning, Plumbing, & Electric | 62 | 4.7★ (4,200) | Bridgeview, 10 mi away | 24/7 | — |
| 8 | Merts Heating & Air Conditioning | 62 | 4.8★ (1,449) | Steger, 9 mi away | 24/7 | — |
| 9 | TR Miller Heating, Cooling, Plumbing and Electrical | 62 | 4.9★ (2,423) | Tinley Park, 14 mi away | 24/7 | — |
| 10 | Allegiance Heating & Cooling | 61 | 4.9★ (440) | Mokena, 7 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 in Markham
Based in Crestwood, 4 mi away
Ranked #1 because of its Google rating and trade focus: 4.8★ from 3,722 Google reviews, listed on Google as “HVAC contractor”.
Based in Chicago, 12 mi away
Ranked #2 because of its Google rating and review volume: 4.7★ from 27,709 Google reviews, the most in Markham.
Based in Oak Forest, 2 mi away
Ranked #3 because of its Google rating and trade focus: 4.7★ from 3,996 Google reviews, listed on Google as “HVAC contractor”.
Based in Homewood, 3 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 2,200 Google reviews, listed on Google as “HVAC contractor”.
Based in Mokena, 8 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 664 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Alsip, 7 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 842 Google reviews, listed on Google as “Heating contractor”.
Based in Bridgeview, 10 mi away
Ranked #7 because of its Google rating and trade focus: 4.7★ from 4,200 Google reviews, listed on Google as “HVAC contractor”.
Based in Steger, 9 mi away
Ranked #8 because of its Google rating and trade focus: 4.8★ from 1,449 Google reviews, listed on Google as “Furnace repair service”.
Based in Tinley Park, 14 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 2,423 Google reviews, listed on Google as “HVAC contractor”.
Based in Mokena, 7 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 440 Google reviews, listed on Google as “HVAC contractor”.
Based in Plainfield, 9 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 408 Google reviews, listed on Google as “HVAC contractor”.
Based in Alsip, 7 mi away
Ranked #12 because of its Google rating and trade focus: 4.8★ from 600 Google reviews, listed on Google as “HVAC contractor”.
Based in Mokena, 8 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 428 Google reviews, listed on Google as “Furnace repair service”.
Based in Oak Lawn, 9 mi away
Ranked #14 because of its Google rating and trade focus: 4.8★ from 783 Google reviews, listed on Google as “HVAC contractor”.
Based in Frankfort, 11 mi away
Ranked #15 because of its Google rating and trade focus: 4.8★ from 1,060 Google reviews, listed on Google as “HVAC contractor”.
Based in Crown Point, 21 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 4,666 Google reviews, listed on Google as “HVAC contractor”.
Based in Mokena, 8 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 282 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Alsip, 7 mi away
Ranked #18 because of its Google rating and trade focus: 4.8★ from 269 Google reviews, listed on Google as “HVAC contractor”.
Based in Hazel Crest, 2 mi away
Ranked #19 because of its Google rating and trade focus: 4.8★ from 100 Google reviews, listed on Google as “HVAC contractor”.
Based in Frankfort, 11 mi away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 430 Google reviews, listed on Google as “HVAC contractor”.
Based in Countryside, 6 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 109 Google reviews, listed on Google as “HVAC contractor”.
Based in Mokena, 9 mi away
Ranked #22 because of its Google rating and trade focus: 4.8★ from 440 Google reviews, listed on Google as “HVAC contractor”.
Based in Orland Park, 9 mi away
Ranked #23 because of its Google rating and trade focus: 4.6★ from 899 Google reviews, listed on Google as “HVAC contractor”.
Based in Tinley Park, 6 mi away
Ranked #24 because of its Google rating and trade focus: 4.8★ from 201 Google reviews, listed on Google as “HVAC contractor”.
Based in Tinley Park, 6 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 92 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 973 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 |
|---|---|---|
| ABC Plumbing, Sewer, Heating, Cooling & Electric | 4.8★ (1,107) | 22 mi |
| Air-ease Heating & Cooling | 4.6★ (28) | 3 mi |
| All You Need Heating, Ventilation, AC & Refrigeration Professionals | 4.9★ (53) | 4 mi |
| Appliance Repair By TMK | 3.5★ (2) | 9 mi |
| Artesian Plumbing, Heating & Cooling, Inc. | 3.0★ (2) | 8 mi |
| Calumet Heating & Cooling | 3.0★ (2) | 3 mi |
| CMK Contractors Inc | 5.0★ (2) | 3 mi |
| Coleman LLC | 5.0★ (2) | 8 mi |
| Cotton Construction | 5.0★ (2) | 9 mi |
| Dynamic Heating & Piping | 1.0★ (2) | 4 mi |
| Heat Medics Heating & Cooling, LLC | 5.0★ (131) | 11 mi |
| Heating And Air Conditioning | 4.5★ (34) | 4 mi |
| HVAC Masters | 5.0★ (2) | 7 mi |
| Posen Heating & Air Services | 5.0★ (2) | 2 mi |
| Preferred Comfort | 5.0★ (2) | 8 mi |
| Rashad's Heating & Cooling LLC | 4.6★ (51) | 6 mi |
| Rps Heating & Air | 5.0★ (2) | 6 mi |
| SAI Mechanical | 5.0★ (2) | 8 mi |
| Smg hvac | 5.0★ (2) | 5 mi |
| Temperature Control Solutions | 5.0★ (2) | 7 mi |
National price ranges in USD, not adjusted for Markham. 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 973 Markham 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 Markham 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 |