844 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Farmington Hills: Randazzo Heating & Cooling, CR Score 65/100; 4.9★ from 1,580 Google reviews; open 24/7.
Best for emergencies (open 24/7): Levine & Sons Plumbing, Heating & AC, posts 24/7 hours; ranked #3 of 844.
Most-reviewed: Thornton & Grooms, 15,592 Google reviews at 4.9★, the most of 844 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
844 Farmington Hills HVAC contractors are ranked here by CR Score, from ten published factors. 254 are open 24/7, 551 open Saturdays and 415 open Sundays, based on posted hours. The median Google rating is 4.8★ across 844 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Randazzo Heating & Cooling | 65 | 4.9★ (1,580) | Farmington Hills | 24/7 | Overall |
| 2 | Thornton & Grooms | 65 | 4.9★ (15,592) | Farmington Hills | Sat · Evenings | Most reviews |
| 3 | Levine & Sons Plumbing, Heating & AC | 65 | 4.8★ (5,322) | Southfield, 5 mi away | 24/7 | Emergencies |
| 4 | Ehlers Heating & Cooling | 64 | 4.9★ (1,199) | Livonia, 3 mi away | 24/7 | — |
| 5 | Robin Aire Service Company | 64 | 4.9★ (2,591) | Wixom, 8 mi away | 24/7 | — |
| 6 | Mrs. Michael Plumbers, Electricians, and HVAC Technicians | 63 | 4.8★ (565) | Farmington Hills | 24/7 | — |
| 7 | Crain Heating and Cooling | 63 | 4.9★ (1,422) | Livonia, 8 mi away | 24/7 | — |
| 8 | Carter's Plumbing, Heating & Cooling of Farmington Hills | 63 | 4.9★ (1,053) | Farmington Hills | Sat · Sun · Evenings | — |
| 9 | Harriman Heating & Air Conditioning | 63 | 4.8★ (1,520) | Farmington Hills | Sat · Sun · Evenings | — |
| 10 | Matheson Heating Air Plumbing | 63 | 4.9★ (1,350) | Milford, 9 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 1,580 Google reviews, listed on Google as “HVAC contractor”.
Based in Farmington Hills
Ranked #2 because of its Google rating and review volume: 4.9★ from 15,592 Google reviews, the most in Farmington Hills.
Based in Southfield, 5 mi away
Ranked #3 because of its Google rating and trade focus: 4.8★ from 5,322 Google reviews, listed on Google as “HVAC contractor”.
Based in Livonia, 3 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 1,199 Google reviews, listed on Google as “HVAC contractor”.
Based in Wixom, 8 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 2,591 Google reviews, listed on Google as “HVAC contractor”.
Based in Farmington Hills
Ranked #6 because of its Google rating and trade focus: 4.8★ from 565 Google reviews, listed on Google as “HVAC contractor”.
Based in Livonia, 8 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 1,422 Google reviews, listed on Google as “HVAC contractor”.
Based in Farmington Hills
Ranked #8 because of its Google rating and trade focus: 4.9★ from 1,053 Google reviews, listed on Google as “HVAC contractor”.
Based in Farmington Hills
Ranked #9 because of its Google rating and trade focus: 4.8★ from 1,520 Google reviews, listed on Google as “HVAC contractor”.
Based in Milford, 9 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 1,350 Google reviews, listed on Google as “HVAC contractor”.
Based in Farmington Hills
Ranked #11 because of its Google rating and trade focus: 4.9★ from 261 Google reviews, listed on Google as “HVAC contractor”.
Based in Farmington Hills
Ranked #12 because of its Google rating and trade focus: 5.0★ from 181 Google reviews, listed on Google as “HVAC contractor”.
Based in Auburn Hills, 11 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 1,067 Google reviews, listed on Google as “HVAC contractor”.
Based in Auburn Hills, 16 mi away
Ranked #14 because of its Google rating and trade focus: 4.8★ from 6,170 Google reviews, listed on Google as “HVAC contractor”.
Based in Novi, 5 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 270 Google reviews, listed on Google as “HVAC contractor”.
Based in Farmington, 3 mi away
Ranked #16 because of its Google rating and trade focus: 4.8★ from 347 Google reviews, listed on Google as “HVAC contractor”.
Based in Plymouth, 10 mi away
Ranked #17 because of its Google rating and trade focus: 4.8★ from 4,390 Google reviews, listed on Google as “HVAC contractor”.
Based in Auburn Hills, 10 mi away
Ranked #18 because of its Google rating and trade focus: 4.9★ from 681 Google reviews, listed on Google as “HVAC contractor”.
Based in Farmington Hills
Ranked #19 because of its Google rating and trade focus: 5.0★ from 64 Google reviews, listed on Google as “HVAC contractor”.
Based in Auburn Hills, 25 mi away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 8,968 Google reviews, listed on Google as “HVAC contractor”.
Based in Auburn Hills, 10 mi away
Ranked #21 because of its Google rating and trade focus: 4.9★ from 1,841 Google reviews, listed on Google as “HVAC contractor”.
Based in Livonia, 7 mi away
Ranked #22 because of its Google rating and trade focus: 4.8★ from 474 Google reviews, listed on Google as “HVAC contractor”.
Based in Warren, 15 mi away
Ranked #23 because of its Google rating and trade focus: 4.7★ from 3,170 Google reviews, listed on Google as “HVAC contractor”.
Based in Dearborn, 9 mi away
Ranked #24 because of its Google rating and trade focus: 4.7★ from 851 Google reviews, listed on Google as “HVAC contractor”.
Based in Farmington Hills
Ranked #25 because of its Google rating and trade focus: 4.6★ from 191 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 844 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 |
|---|---|---|
| . | 5.0★ (1) | In Farmington Hills |
| A Power Heating & Cooling Refrigeration | 4.9★ (103) | 11 mi |
| Affordable Comfort Heating and Cooling | 4.8★ (459) | 16 mi |
| Aladdin Heating & Cooling | 4.7★ (555) | 16 mi |
| CK Mechanical Heating and Cooling Inc. | 4.8★ (863) | 20 mi |
| D&D AC and Furnace Heating Repair | 5.0★ (2) | 9 mi |
| Duffy's Heating & Air Conditioning | 5.0★ (2) | In Farmington Hills |
| Edwards Plumbing & Heating | 4.3★ (2,053) | 14 mi |
| Fahrenheit Heating and Cooling | 4.9★ (68) | 7 mi |
| Heating & Cooling | 5.0★ (2) | 9 mi |
| Joe's Heating | 4.5★ (2) | 7 mi |
| Joshua & Sunny | 5.0★ (2) | 8 mi |
| JR Heating and Cooling | 5.0★ (2) | In Farmington Hills |
| KENS HOME CREATIONS | 5.0★ (2) | 6 mi |
| Next Level Mechanical | In Farmington Hills | |
| R & L Heating and Cooling | 4.8★ (702) | 19 mi |
| Rush Mechanical, LLC | 5.0★ (1) | In Farmington Hills |
| SERVPRO of Farmington & Farmington Hills | 4.6★ (57) | In Farmington Hills |
| Tempco Mechanical Contractors, Inc. | 5.0★ (2) | In Farmington Hills |
| THE LYONS' DEN: HVAC CARE AND REPAIR, LLC | 5.0★ (2) | 2 mi |
National price ranges in USD, not adjusted for Farmington Hills. 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 Michigan, Michigan LARA, Bureau of Construction Codes licenses Mechanical contractor licenses.
No chip usually means we have not matched a state record yet. Check the lookup yourself before you hire.
Guide checked October 2026. How we verify licenses
In Michigan, 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 844 Farmington Hills 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 Hills 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 |