51 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Marion: Pass One Hour Heating & Air Conditioning, CR Score 95/100; 4.9★ from 2,143 Google reviews; open 24/7.
Best for emergencies (open 24/7): RSP Heating and Cooling, posts 24/7 hours; ranked #2 of 51.
Most-reviewed: RSP Heating and Cooling, 1,882 Google reviews at 4.9★, the most of 51 ranked after Pass One Hour Heating & Air Conditioning; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
51 Marion HVAC contractors are ranked here by CR Score, from 8 published factors. 20 are open 24/7, 26 open Saturdays and 23 open Sundays, based on posted hours. The median Google rating is 4.9★ across 51 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Pass One Hour Heating & Air Conditioning | 95 | 4.9★ (2,143) | Herrin, 5 mi away | 24/7 | Overall |
| 2 | RSP Heating and Cooling | 95 | 4.9★ (1,882) | Carterville, 6 mi away | 24/7 | Emergencies, Most reviews |
| 3 | Parker Heating & Cooling | 93 | 4.8★ (636) | Marion | 24/7 | — |
| 4 | Charlie's Air Conditioning & Heating | 93 | 5.0★ (777) | Carterville, 8 mi away | 24/7 | — |
| 5 | Bailey's Heating & Cooling | 92 | 5.0★ (236) | Marion | 24/7 | — |
| 6 | Webb's Heating & Air Conditioning | 92 | 4.9★ (379) | Herrin, 6 mi away | 24/7 | — |
| 7 | Unrivaled Heating and Cooling | 91 | 5.0★ (61) | Marion | 24/7 | — |
| 8 | Ponder Service Inc | 89 | 4.7★ (66) | Marion | 24/7 | — |
| 9 | SI Furnace Man Heating and Cooling | 89 | 4.9★ (27) | Marion | 24/7 | — |
| 10 | Bayer Heating and Cooling | 86 | 5.0★ (13) | Herrin, 6 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and review volume: 4.9★ from 2,143 Google reviews, the most Google reviews on this list (2,143).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Carterville, 6 mi away
Ranked #2 because of its Google rating and availability: 4.9★ from 1,882 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Marion
Ranked #3 because of its Google rating and availability: 4.8★ from 636 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Carterville, 8 mi away
Ranked #4 because of its Google rating and availability: 5.0★ from 777 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Marion
Ranked #5 because of its Google rating and availability: 5.0★ from 236 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Herrin, 6 mi away
Ranked #6 because of its Google rating and availability: 4.9★ from 379 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Marion
Ranked #7 because of its Google rating and availability: 5.0★ from 61 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Marion
Ranked #8 because of its Google rating and availability: 4.7★ from 66 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Marion
Ranked #9 because of its Google rating and availability: 4.9★ from 27 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Herrin, 6 mi away
Ranked #10 because of its Google rating and availability: 5.0★ from 13 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Marion
Ranked #11 because of its Google rating and availability: 5.0★ from 5 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Marion
Ranked #12 because of its Google rating and trade focus: 4.6★ from 114 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in West Frankfort, 10 mi away
Ranked #13 because of its Google rating and availability: 5.0★ from 43 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Herrin, 8 mi away
Ranked #14 because of its Google rating and availability: 4.3★ from 61 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in West Frankfort, 12 mi away
Ranked #15 because of its Google rating and availability: 5.0★ from 14 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Marion
Ranked #16 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “Heating contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Murphysboro, 23 mi away
Ranked #17 because of its Google rating and availability: 4.7★ from 54 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Harrisburg, 22 mi away
Ranked #18 because of its Google rating and availability: 4.4★ from 44 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Benton, 21 mi away
Ranked #19 because of its Google rating and availability: 4.7★ from 15 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Marion
Ranked #20 because of its Google rating and trade focus: 4.9★ from 88 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Carterville, 9 mi away
Ranked #21 because of its Google rating and availability: 2.4★ from 9 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Murphysboro, 22 mi away
Ranked #22 because of its Google rating and availability: 4.2★ from 5 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Marion
Ranked #23 because of its Google rating and trade focus: 3.4★ from 7 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Herrin, 7 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Marion
Ranked #25 because of its Google rating and trade focus: 4.9★ from 41 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
#1 to #25 are shown in full above. Here are #28 to #28, in CR Score order; each links to its profile. We publish the top 28 of 51 ranked HVAC contractors here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 28 | Jacobs Air Conditioning & Heating | 78 | 4.9★ (345) | 16 mi |
National price ranges in USD, not adjusted for Marion. 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 51 Marion 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 Marion 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 |