424 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Carnegie: J&A Heating, Cooling, Plumbing, & Electrical, CR Score 93/100; 4.8★ from 4,278 Google reviews; open 24/7.
Best for emergencies (open 24/7): CALFO Home Services, posts 24/7 hours; ranked #2 of 424.
Most-reviewed: Mitchell Plumbing, Heating, and Cooling, 4,264 Google reviews at 5.0★, the most of 424 ranked after J&A Heating, Cooling, Plumbing, & Electrical; ranked #10.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
424 Carnegie HVAC contractors are ranked here by CR Score, from 8 published factors. 139 are open 24/7, 228 open Saturdays and 180 open Sundays, based on posted hours. The median Google rating is 4.8★ across 424 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | J&A Heating, Cooling, Plumbing, & Electrical | 93 | 4.8★ (4,278) | West Mifflin, 9 mi away | 24/7 | Overall |
| 2 | CALFO Home Services | 93 | 4.8★ (3,299) | Pittsburgh, 8 mi away | 24/7 | Emergencies |
| 3 | Boehmer Heating & Cooling | 93 | 4.8★ (1,350) | Pittsburgh, 4 mi away | 24/7 | — |
| 4 | Sureway Heating Cooling Plumbing | 92 | 4.9★ (608) | Bridgeville, 4 mi away | 24/7 | — |
| 5 | Armstrong Comfort Solutions | 92 | 4.9★ (1,265) | Pittsburgh, 8 mi away | 24/7 | — |
| 6 | White Heating Inc | 92 | 4.9★ (1,453) | Pittsburgh, 10 mi away | 24/7 | — |
| 7 | Denillo Heating & Cooling, Inc. | 92 | 4.9★ (707) | Bethel Park, 6 mi away | 24/7 | — |
| 8 | TUDI Mechanical Systems | 92 | 4.8★ (1,030) | McKees Rocks, 5 mi away | 24/7 | — |
| 9 | Mark Allen Service Experts | 92 | 4.8★ (1,043) | Bethel Park, 5 mi away | 24/7 | — |
| 10 | Mitchell Plumbing, Heating, and Cooling | 92 | 5.0★ (4,264) | Bethel Park, 21 mi away | 24/7 | Most reviews |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Ranked #1 in Carnegie
Based in West Mifflin, 9 mi away
Ranked #1 because of its Google rating and review volume: 4.8★ from 4,278 Google reviews, the most Google reviews on this list (4,278).
Based in Pittsburgh, 8 mi away
Ranked #2 because of its Google rating and availability: 4.8★ from 3,299 Google reviews, open 24/7.
Based in Pittsburgh, 4 mi away
Ranked #3 because of its Google rating and availability: 4.8★ from 1,350 Google reviews, open 24/7.
Based in Bridgeville, 4 mi away
Ranked #4 because of its Google rating and availability: 4.9★ from 608 Google reviews, open 24/7.
Based in Pittsburgh, 8 mi away
Ranked #5 because of its Google rating and availability: 4.9★ from 1,265 Google reviews, open 24/7.
Based in Pittsburgh, 10 mi away
Ranked #6 because of its Google rating and availability: 4.9★ from 1,453 Google reviews, open 24/7.
Based in Bethel Park, 6 mi away
Ranked #7 because of its Google rating and availability: 4.9★ from 707 Google reviews, open 24/7.
Based in McKees Rocks, 5 mi away
Ranked #8 because of its Google rating and availability: 4.8★ from 1,030 Google reviews, open 24/7.
Based in Bethel Park, 5 mi away
Ranked #9 because of its Google rating and availability: 4.8★ from 1,043 Google reviews, open 24/7.
Based in Bethel Park, 21 mi away
Ranked #10 because of its Google rating and review volume: 5.0★ from 4,264 Google reviews, 4,264 Google reviews.
Based in Bridgeville, 4 mi away
Ranked #11 because of its Google rating and availability: 4.5★ from 3,864 Google reviews, open 24/7.
Based in Ambridge, 13 mi away
Ranked #12 because of its Google rating and availability: 4.9★ from 1,647 Google reviews, open 24/7.
Based in Fox Chapel, 15 mi away
Ranked #13 because of its Google rating and availability: 4.9★ from 1,139 Google reviews, open 24/7.
Based in Bethel Park, 7 mi away
Ranked #14 because of its Google rating and availability: 4.9★ from 307 Google reviews, open 24/7.
Based in Pittsburgh, 5 mi away
Ranked #15 because of its Google rating and availability: 4.9★ from 215 Google reviews, open 24/7.
Based in Bethel Park, 6 mi away
Ranked #16 because of its Google rating and availability: 4.7★ from 603 Google reviews, open 24/7.
Based in Pittsburgh, 7 mi away
Ranked #17 because of its Google rating and availability: 4.8★ from 418 Google reviews, open 24/7.
Based in Baldwin, 5 mi away
Ranked #18 because of its Google rating and availability: 5.0★ from 126 Google reviews, open 24/7.
Based in Bethel Park, 5 mi away
Ranked #19 because of its Google rating and availability: 4.9★ from 168 Google reviews, open 24/7.
Based in Pittsburgh, 3 mi away
Ranked #20 because of its Google rating and availability: 4.7★ from 232 Google reviews, open 24/7.
Based in Bellevue, 6 mi away
Ranked #21 because of its Google rating and availability: 5.0★ from 112 Google reviews, open 24/7.
Based in Bridgeville, 2 mi away
Ranked #22 because of its Google rating and availability: 4.9★ from 90 Google reviews, open 24/7.
Based in Pittsburgh, 4 mi away
Ranked #23 because of its Google rating and availability: 4.9★ from 103 Google reviews, open 24/7.
Based in Ambridge, 10 mi away
Ranked #24 because of its Google rating and availability: 4.9★ from 278 Google reviews, open 24/7.
Based in Coraopolis, 8 mi away
Ranked #25 because of its Google rating and availability: 4.9★ from 209 Google reviews, open 24/7.
#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 424 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 |
|---|---|---|
| Air Innovation HVAC | 5.0★ (2) | 3 mi |
| Caruso Heating & Air Conditioning | 1.0★ (2) | 5 mi |
| Contractors Grind | 5.0★ (2) | 5 mi |
| Craft Heating Company | 4.4★ (99) | 2 mi |
| Don Bigley Plumbing Co. Inc. | 4.6★ (41) | In Carnegie |
| Dr Home Rx | 5.0★ (2) | 6 mi |
| Feeney Brothers mini splits | In Carnegie | |
| HP4 Enterprises LLC | 5.0★ (1) | In Carnegie |
| Independent Mechanical, Inc. | 5.0★ (3) | In Carnegie |
| M J Flaherty Plumbing & Heating | 5.0★ (1) | In Carnegie |
| Mold Medics | 5.0★ (682) | In Carnegie |
| One Hour Heating & Air | 4.9★ (1,068) | 6 mi |
| P C Mc Kenzie Co | 5.0★ (2) | 4 mi |
| R B Vet Co | 5.0★ (2) | In Carnegie |
| Residential HVAC Services | 5.0★ (2) | 1 mi |
| Service Equipment Co Inc | 3.0★ (2) | 8 mi |
| Shapel General Contracting, Inc. | In Carnegie | |
| Staab & Sons, Inc. | 4.5★ (78) | 5 mi |
| Tom Kirchner Heating & Cooling | 4.5★ (2) | 6 mi |
| Top Tech | 4.5★ (26) | In Carnegie |
National price ranges in USD, not adjusted for Carnegie. 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 Pennsylvania, 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 424 Carnegie 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 Carnegie 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 |