341 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Carmel: Williams Comfort Air - Heating Cooling Plumbing Electrical, CR Score 67/100; 4.8★ from 6,610 Google reviews; open 24/7.
Best for emergencies (open 24/7): Good Guys Home Services, posts 24/7 hours; ranked #2 of 341.
Most-reviewed: Mister Quik Home Services, 8,281 Google reviews at 4.6★, the most of 341 ranked; ranked #22.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
341 Carmel HVAC contractors are ranked here by CR Score, from ten published factors. 163 are open 24/7, 246 open Saturdays and 206 open Sundays, based on posted hours. The median Google rating is 4.9★ across 341 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Williams Comfort Air - Heating Cooling Plumbing Electrical | 67 | 4.8★ (6,610) | Carmel | 24/7 | Overall |
| 2 | Good Guys Home Services | 65 | 4.9★ (2,347) | Westfield, 4 mi away | 24/7 | Emergencies |
| 3 | Summers Plumbing Heating & Cooling | 65 | 4.9★ (3,098) | Noblesville, 7 mi away | 24/7 | — |
| 4 | Action Air | 65 | 4.9★ (2,360) | Fishers, 6 mi away | 24/7 | — |
| 5 | Appel Heating & Air Conditioning | 65 | 4.9★ (653) | Carmel | 24/7 | — |
| 6 | Peterman Brothers Heating Cooling Plumbing | 65 | 4.8★ (3,128) | Fishers, 6 mi away | 24/7 | — |
| 7 | One Hour Heating & Air Conditioning | 64 | 4.8★ (7,717) | Indianapolis, 12 mi away | 24/7 | — |
| 8 | Plumbing Heating Paramedics | 64 | 4.8★ (2,410) | Noblesville, 7 mi away | 24/7 | — |
| 9 | Chapman Heating, Air Conditioning & Plumbing | 64 | 4.9★ (6,786) | Indianapolis, 16 mi away | 24/7 | — |
| 10 | Service Plus Heating, Cooling, Plumbing & Electrical | 64 | 4.8★ (5,277) | Indianapolis, 6 mi away | Sat · Sun · Evenings | — |
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: 4.8★ from 6,610 Google reviews, listed on Google as “Furnace repair service”.
Based in Westfield, 4 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 2,347 Google reviews, listed on Google as “HVAC contractor”.
Based in Noblesville, 7 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 3,098 Google reviews, listed on Google as “HVAC contractor”.
Based in Fishers, 6 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 2,360 Google reviews, listed on Google as “HVAC contractor”.
Based in Carmel
Ranked #5 because of its Google rating and trade focus: 4.9★ from 653 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Fishers, 6 mi away
Ranked #6 because of its Google rating and trade focus: 4.8★ from 3,128 Google reviews, listed on Google as “HVAC contractor”.
Based in Indianapolis, 12 mi away
Ranked #7 because of its Google rating and trade focus: 4.8★ from 7,717 Google reviews, listed on Google as “HVAC contractor”.
Based in Noblesville, 7 mi away
Ranked #8 because of its Google rating and trade focus: 4.8★ from 2,410 Google reviews, listed on Google as “HVAC contractor”.
Based in Indianapolis, 16 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 6,786 Google reviews, listed on Google as “HVAC contractor”.
Based in Indianapolis, 6 mi away
Ranked #10 because of its Google rating and trade focus: 4.8★ from 5,277 Google reviews, listed on Google as “HVAC contractor”.
Based in Indianapolis, 7 mi away
Ranked #11 because of its Google rating and trade focus: 4.8★ from 1,795 Google reviews, listed on Google as “HVAC contractor”.
Based in Indianapolis, 17 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 5,732 Google reviews, listed on Google as “HVAC contractor”.
Based in Indianapolis, 9 mi away
Ranked #13 because of its Google rating and trade focus: 4.8★ from 2,006 Google reviews, listed on Google as “HVAC contractor”.
Based in Zionsville, 9 mi away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 1,154 Google reviews, listed on Google as “HVAC contractor”.
Based in Noblesville, 7 mi away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 874 Google reviews, listed on Google as “HVAC contractor”.
Based in Indianapolis, 9 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 1,103 Google reviews, listed on Google as “HVAC contractor”.
Based in Westfield, 4 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 475 Google reviews, listed on Google as “HVAC contractor”.
Based in Carmel
Ranked #18 because of its Google rating and trade focus: 5.0★ from 143 Google reviews, listed on Google as “HVAC contractor”.
Based in Indianapolis, 11 mi away
Ranked #19 because of its Google rating and trade focus: 4.9★ from 1,435 Google reviews, listed on Google as “HVAC contractor”.
Based in Fishers, 6 mi away
Ranked #20 because of its Google rating and trade focus: 4.8★ from 765 Google reviews, listed on Google as “HVAC contractor”.
Based in Indianapolis, 11 mi away
Ranked #21 because of its Google rating and trade focus: 4.8★ from 1,782 Google reviews, listed on Google as “Furnace repair service”.
Based in Indianapolis, 8 mi away
Ranked #22 because of its Google rating and review volume: 4.6★ from 8,281 Google reviews, the most in Carmel.
Based in Fishers, 5 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 818 Google reviews, listed on Google as “HVAC contractor”.
Based in Carmel
Ranked #24 because of its Google rating and trade focus: 4.7★ from 306 Google reviews, listed on Google as “HVAC contractor”.
Based in Brownsburg, 17 mi away
Ranked #25 because of its Google rating and trade focus: 4.9★ from 2,232 Google reviews, listed on Google as “Furnace repair service”.
#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 341 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 |
|---|---|---|
| AA Heating and Cooling | In Carmel | |
| Aire Serv of Carmel | 5.0★ (47) | 6 mi |
| Comfort Master Heating & Air Conditioning | 3.0★ (2) | 10 mi |
| Duct Doctors, Inc. | In Carmel | |
| Exact Temp Heating & Cooling | 5.0★ (2) | In Carmel |
| Fishers Best Plumbing HVAC | 5.0★ (1) | In Carmel |
| Harbour GeoThermal | 1.0★ (1) | In Carmel |
| Innovative Mechanical Solutions, Inc. | 4.0★ (2) | In Carmel |
| intelli-building Control & Solutions LLC | In Carmel | |
| Irish Air | 4.9★ (850) | 22 mi |
| LB Heating and Cooling LLC | 5.0★ (2) | 12 mi |
| MacLellan HVAC and Mechanical, Inc. | 3.0★ (2) | 9 mi |
| Mr. Plumber by Metzler & Hallam | 4.9★ (4,594) | In Carmel |
| New Phase Comfort Heating and Cooling, LLC | 4.5★ (60) | In Carmel |
| Peterman Brothers Heating Cooling Plumbing | 4.9★ (1,629) | 24 mi |
| Smart HVAC LLC. | In Carmel | |
| TCS - Temp Control Services, Inc. | In Carmel | |
| TechPro Mechanical | 5.0★ (5) | In Carmel |
| The Roof Squad | 4.9★ (208) | In Carmel |
| Varsity Zone HVAC of Fishers | 4.9★ (90) | 7 mi |
National price ranges in USD, not adjusted for Carmel. 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 Indiana, 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 341 Carmel 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 Carmel 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 |