19 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Farmington: Proservice, CR Score 63/100; 4.7★ from 246 Google reviews; open 7 days a week.
Best for emergencies (open 24/7): Flat River Heating & Cooling, LLC, posts 24/7 hours; ranked #6 of 19.
Most-reviewed: Midwest Appliance Repair, LLC, 1,233 Google reviews at 5.0★, the most of 19 ranked; ranked #14.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
19 Farmington HVAC contractors are ranked here by CR Score, from ten published factors. 5 are open 24/7, 12 open Saturdays and 7 open Sundays, based on posted hours. The median Google rating is 4.7★ across 19 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Proservice | 63 | 4.7★ (246) | Farmington | Sat · Sun · Evenings | Overall |
| 2 | B&G Heating & Cooling | 61 | 5.0★ (57) | Farmington | Sat · Sun · Evenings | — |
| 3 | Nicholson Heating & Air | 61 | 4.8★ (204) | Farmington | Sat · Evenings | — |
| 4 | Harris Heating & Cooling | 59 | 5.0★ (54) | Farmington | Sat | — |
| 5 | Crystal Heating & Cooling | 58 | 4.7★ (136) | Farmington | — | — |
| 6 | Flat River Heating & Cooling, LLC | 58 | 3.3★ (7) | Farmington | 24/7 | Emergencies |
| 7 | Twomey Heating & Cooling | 57 | 4.0★ (50) | Park Hills, 10 mi away | 24/7 | — |
| 8 | Yount's Commercial Refrign-AC | 56 | 4.0★ (11) | Park Hills, 7 mi away | Sat · Sun · Evenings | — |
| 9 | Koppeis Heating & Cooling | 55 | 4.6★ (27) | Farmington | — | — |
| 10 | Briley Heating And Cooling | 55 | 3.1★ (8) | Park Hills, 11 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and trade focus: 4.7★ from 246 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Farmington
Ranked #2 because of its Google rating and trade focus: 5.0★ from 57 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Farmington
Ranked #3 because of its Google rating and trade focus: 4.8★ from 204 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Farmington
Ranked #4 because of its Google rating and trade focus: 5.0★ from 54 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Farmington
Ranked #5 because of its Google rating and trade focus: 4.7★ from 136 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Farmington
Ranked #6 because of its Google rating and trade focus: 3.3★ from 7 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Park Hills, 10 mi away
Ranked #7 because of its Google rating and trade focus: 4.0★ from 50 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Park Hills, 7 mi away
Ranked #8 because of its Google rating and trade focus: 4.0★ from 11 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Farmington
Ranked #9 because of its Google rating and trade focus: 4.6★ from 27 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Park Hills, 11 mi away
Ranked #10 because of its Google rating and trade focus: 3.1★ from 8 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Park Hills, 4 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “HVAC contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in De Soto, 24 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Farmington
Ranked #13 because of its Google rating and trade focus: 4.8★ from 4 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in De Soto, 21 mi away
Ranked #14 because of its Google rating and review volume: 5.0★ from 1,233 Google reviews, the most in Farmington.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Park Hills, 7 mi away
Ranked #15 because of its Google rating and trade focus: 4.0★ from 21 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Festus, 24 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bonne Terre, 13 mi away
Ranked #17 because of its Google rating and trade focus: 3.7★ from 3 Google reviews, listed on Google as “Heating contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Park Hills, 6 mi away
Ranked #18 because of its Google rating and trade focus: 3.7★ from 22 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Park Hills, 8 mi away
Ranked #19 because of its Google rating and review volume: 4.7★ from 37 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
8 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 |
|---|---|---|
| Collins Heating & Cooling | 7 mi | |
| DM Electric Heating and Cooling | 9 mi | |
| Energy Solutions | In Farmington | |
| Grand Oaks Heating & Air | 5.0★ (2) | In Farmington |
| Lizenby Mechanical Service Inc. | 12 mi | |
| Sears Heating and Air Conditioning | In Farmington | |
| SERVPRO of Farmington | 4.8★ (68) | In Farmington |
| Ultra Heating and Cooling Repair Inc. | 5 mi |
National price ranges in USD, not adjusted for Farmington. 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 |
HVAC demand peaks in summer for cooling and in winter for heating. Spring and fall are the easiest times to book maintenance or a replacement.
We scored 19 Farmington 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 Farmington 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 |