422 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Castle Shannon: CALFO Home Services, CR Score 66/100; 4.8★ from 3,299 Google reviews; open 24/7.
Best for emergencies (open 24/7): J&A Heating, Cooling, Plumbing, & Electrical, posts 24/7 hours; ranked #2 of 422.
Most-reviewed: J&A Heating, Cooling, Plumbing, & Electrical, 4,278 Google reviews at 4.8★, the most of 422 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
422 Castle Shannon HVAC contractors are ranked here by CR Score, from ten published factors. 140 are open 24/7, 228 open Saturdays and 180 open Sundays, based on posted hours. The median Google rating is 4.8★ across 422 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | CALFO Home Services | 66 | 4.8★ (3,299) | Pittsburgh, 4 mi away | 24/7 | Overall |
| 2 | J&A Heating, Cooling, Plumbing, & Electrical | 66 | 4.8★ (4,278) | West Mifflin, 5 mi away | 24/7 | Emergencies, Most reviews |
| 3 | Mark Allen Service Experts | 65 | 4.8★ (1,043) | Bethel Park, 1 mi away | 24/7 | — |
| 4 | Boehmer Heating & Cooling | 65 | 4.8★ (1,350) | Pittsburgh, 4 mi away | 24/7 | — |
| 5 | Denillo Heating & Cooling, Inc. | 65 | 4.9★ (707) | Bethel Park, 3 mi away | 24/7 | — |
| 6 | Gillece Services | 64 | 4.5★ (3,864) | Bridgeville, 5 mi away | 24/7 | — |
| 7 | Sureway Heating Cooling Plumbing | 64 | 4.9★ (608) | Bridgeville, 5 mi away | 24/7 | — |
| 8 | Armstrong Comfort Solutions | 64 | 4.9★ (1,265) | Pittsburgh, 10 mi away | 24/7 | — |
| 9 | Mitchell Plumbing, Heating, and Cooling | 64 | 5.0★ (4,264) | Bethel Park, 20 mi away | 24/7 | — |
| 10 | TUDI Mechanical Systems | 63 | 4.8★ (1,030) | McKees Rocks, 8 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: 4.8★ from 3,299 Google reviews, listed on Google as “HVAC contractor”.
Based in West Mifflin, 5 mi away
Ranked #2 because of its Google rating and review volume: 4.8★ from 4,278 Google reviews, the most in Castle Shannon.
Based in Bethel Park, 1 mi away
Ranked #3 because of its Google rating and trade focus: 4.8★ from 1,043 Google reviews, listed on Google as “HVAC contractor”.
Based in Pittsburgh, 4 mi away
Ranked #4 because of its Google rating and trade focus: 4.8★ from 1,350 Google reviews, listed on Google as “HVAC contractor”.
Based in Bethel Park, 3 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 707 Google reviews, listed on Google as “HVAC contractor”.
Based in Bridgeville, 5 mi away
Ranked #6 because of its Google rating and trade focus: 4.5★ from 3,864 Google reviews, listed on Google as “HVAC contractor”.
Based in Bridgeville, 5 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 608 Google reviews, listed on Google as “HVAC contractor”.
Based in Pittsburgh, 10 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 1,265 Google reviews, listed on Google as “HVAC contractor”.
Based in Bethel Park, 20 mi away
Ranked #9 because of its Google rating and review volume: 5.0★ from 4,264 Google reviews.
Based in McKees Rocks, 8 mi away
Ranked #10 because of its Google rating and trade focus: 4.8★ from 1,030 Google reviews, listed on Google as “HVAC contractor”.
Based in Pittsburgh, 12 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 1,453 Google reviews, listed on Google as “HVAC contractor”.
Based in Bethel Park, 3 mi away
Ranked #12 because of its Google rating and trade focus: 4.7★ from 603 Google reviews, listed on Google as “HVAC contractor”.
Based in Bethel Park, 4 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 307 Google reviews, listed on Google as “HVAC contractor”.
Based in Bethel Park, 1 mi away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 168 Google reviews, listed on Google as “HVAC contractor”.
Based in Fox Chapel, 14 mi away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 1,139 Google reviews, listed on Google as “HVAC contractor”.
Based in Baldwin, 2 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 126 Google reviews, listed on Google as “HVAC contractor”.
Based in Ambridge, 18 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 1,647 Google reviews, listed on Google as “HVAC contractor”.
Based in Pittsburgh, 5 mi away
Ranked #18 because of its Google rating and trade focus: 4.9★ from 215 Google reviews, listed on Google as “HVAC contractor”.
Based in Bethel Park, 3 mi away
Ranked #19 because of its Google rating and trade focus: 4.9★ from 1,068 Google reviews, listed on Google as “HVAC contractor”.
Based in Pittsburgh, 2 mi away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 89 Google reviews, listed on Google as “HVAC contractor”.
Based in Pittsburgh, 4 mi away
Ranked #21 because of its Google rating and trade focus: 4.7★ from 232 Google reviews, listed on Google as “HVAC contractor”.
Based in Pittsburgh, 16 mi away
Ranked #22 because of its Google rating and trade focus: 4.8★ from 1,123 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Pittsburgh, 13 mi away
Ranked #23 because of its Google rating and trade focus: 4.9★ from 476 Google reviews, listed on Google as “HVAC contractor”.
Based in McKeesport, 10 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 206 Google reviews, listed on Google as “HVAC contractor”.
Based in Pittsburgh, 11 mi away
Ranked #25 because of its Google rating and trade focus: 4.8★ from 418 Google reviews, listed on Google as “Air conditioning 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 422 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) | 1 mi |
| Contractors Grind | 5.0★ (2) | 6 mi |
| Craft Heating Company | 4.4★ (99) | 5 mi |
| Dr Home Rx | 5.0★ (2) | 5 mi |
| Dynamic Heating & Cooling Inc | 5.0★ (2) | 14 mi |
| Eastley Inc | 5.0★ (2) | 12 mi |
| Impact HVAC | 4.6★ (44) | 2 mi |
| JT ELECTRIC HEATING & COOLING | 4.6★ (38) | 3 mi |
| P C Mc Kenzie Co | 5.0★ (2) | 4 mi |
| Residential HVAC Services | 5.0★ (2) | 5 mi |
| Ruthrauff Service, LLC | 3.0★ (2) | 13 mi |
| Sears Heating and Air Conditioning | 4.0★ (2) | 14 mi |
| Service Equipment Co Inc | 3.0★ (2) | 11 mi |
| Ted Thompson Heating and Cooling | In Castle Shannon | |
| Thermaltech | 5.0★ (2) | 13 mi |
| Three Rivers Mechanical, LLC | 4.5★ (2) | 6 mi |
| Tom Kirchner Heating & Cooling | 4.5★ (2) | 3 mi |
| Tom Yocum Heating and Cooling | 5.0★ (2) | 8 mi |
| VIP Heat & a-C | 3.0★ (2) | 12 mi |
National price ranges in USD, not adjusted for Castle Shannon. 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 422 Castle Shannon 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 Castle Shannon 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 |