1,115 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Norristown: Horizon Services - Air Conditioning, Heating, Plumbing, & Electrical, CR Score 66/100; 4.7★ from 10,656 Google reviews; open 24/7.
Best for emergencies (open 24/7): Lowry Services, posts 24/7 hours; ranked #4 of 1,115.
Most-reviewed: Harris Plumbing, Heating, Air & Electrical, 11,049 Google reviews at 4.9★, the most of 1,115 ranked; ranked #14.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
1,115 Norristown HVAC contractors are ranked here by CR Score, from ten published factors. 437 are open 24/7, 700 open Saturdays and 552 open Sundays, based on posted hours. The median Google rating is 4.9★ across 1,115 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Horizon Services - Air Conditioning, Heating, Plumbing, & Electrical | 66 | 4.7★ (10,656) | Audubon, 4 mi away | 24/7 | Overall |
| 2 | Sila Heating, Air Conditioning, Plumbing & Electrical | 64 | 4.8★ (4,927) | King of Prussia, 3 mi away | Sat · Sun · Evenings | — |
| 3 | Donnelly's Plumbing, Cooling, Heating & Electric | 64 | 4.8★ (4,905) | Plymouth Meeting, 3 mi away | Sat · Sun · Evenings | — |
| 4 | Lowry Services | 64 | 4.8★ (4,471) | Harleysville, 10 mi away | 24/7 | Emergencies |
| 5 | Davis Modern Heating & Cooling | 64 | 4.8★ (616) | Norristown | 24/7 | — |
| 6 | IT Landes Home Service Team | 64 | 4.9★ (2,388) | Harleysville, 10 mi away | 24/7 | — |
| 7 | Mattioni Plumbing, Heating & Cooling | 64 | 5.0★ (667) | King of Prussia, 6 mi away | 24/7 | — |
| 8 | Quality Degree, Inc. | 63 | 4.9★ (2,683) | Phoenixville, 12 mi away | 24/7 | — |
| 9 | Adam Home Services | 63 | 4.8★ (3,232) | Broomall, 11 mi away | 24/7 | — |
| 10 | Harris Plumbing, Heating, Air & Electrical | 63 | 4.9★ (3,594) | Media, 14 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 in Norristown
Based in Audubon, 4 mi away
Ranked #1 because of its Google rating and trade focus: 4.7★ from 10,656 Google reviews, listed on Google as “HVAC contractor”.
Based in King of Prussia, 3 mi away
Ranked #2 because of its Google rating and trade focus: 4.8★ from 4,927 Google reviews, listed on Google as “HVAC contractor”.
Based in Plymouth Meeting, 3 mi away
Ranked #3 because of its Google rating and trade focus: 4.8★ from 4,905 Google reviews, listed on Google as “HVAC contractor”.
Based in Harleysville, 10 mi away
Ranked #4 because of its Google rating and trade focus: 4.8★ from 4,471 Google reviews, listed on Google as “HVAC contractor”.
Based in Norristown
Ranked #5 because of its Google rating and trade focus: 4.8★ from 616 Google reviews, listed on Google as “HVAC contractor”.
Based in Harleysville, 10 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 2,388 Google reviews, listed on Google as “HVAC contractor”.
Based in King of Prussia, 6 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 667 Google reviews, listed on Google as “HVAC contractor”.
Based in Phoenixville, 12 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 2,683 Google reviews, listed on Google as “HVAC contractor”.
Based in Broomall, 11 mi away
Ranked #9 because of its Google rating and trade focus: 4.8★ from 3,232 Google reviews, listed on Google as “HVAC contractor”.
Based in Media, 14 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 3,594 Google reviews, listed on Google as “HVAC contractor”.
Based in Lansdale, 7 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 928 Google reviews, listed on Google as “HVAC contractor”.
Based in King of Prussia, 6 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 648 Google reviews, listed on Google as “HVAC contractor”.
Based in West Chester, 15 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 3,053 Google reviews, listed on Google as “HVAC contractor”.
Based in Woodbury, 22 mi away
Ranked #14 because of its Google rating and review volume: 4.9★ from 11,049 Google reviews, the most in Norristown.
Based in West Chester, 16 mi away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 3,146 Google reviews, listed on Google as “HVAC contractor”.
Based in Kulpsville, 8 mi away
Ranked #16 because of its Google rating and trade focus: 4.8★ from 1,035 Google reviews, listed on Google as “HVAC contractor”.
Based in Philadelphia, 11 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 980 Google reviews, listed on Google as “HVAC contractor”.
Based in Souderton, 12 mi away
Ranked #18 because of its Google rating and trade focus: 4.9★ from 1,236 Google reviews, listed on Google as “Furnace repair service”.
Based in Hatboro, 16 mi away
Ranked #19 because of its Google rating and trade focus: 4.9★ from 2,538 Google reviews, listed on Google as “HVAC contractor”.
Based in Ardmore, 13 mi away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 1,287 Google reviews, listed on Google as “HVAC contractor”.
Based in Hatboro, 17 mi away
Ranked #21 because of its Google rating and trade focus: 4.8★ from 3,972 Google reviews, listed on Google as “HVAC contractor”.
Based in Chester Springs, 11 mi away
Ranked #22 because of its Google rating and trade focus: 4.9★ from 765 Google reviews, listed on Google as “HVAC contractor”.
Based in Willow Grove, 13 mi away
Ranked #23 because of its Google rating and trade focus: 4.9★ from 1,014 Google reviews, listed on Google as “HVAC contractor”.
Based in Ardmore, 10 mi away
Ranked #24 because of its Google rating and trade focus: 4.9★ from 617 Google reviews, listed on Google as “HVAC contractor”.
Based in Dresher, 12 mi away
Ranked #25 because of its Google rating and trade focus: 4.9★ from 853 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 1,115 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 Done Right | 4.8★ (286) | 8 mi |
| Budget Plumbing & Heating | 1.0★ (1) | In Norristown |
| Christian Heating, Cooling, Plumbing & Electrical | 4.9★ (121) | 5 mi |
| HVAC Plus Inc | In Norristown | |
| J & A Refrigeration | 4.5★ (2) | 10 mi |
| John McCuen Backflow Services | 5.0★ (2) | 10 mi |
| Koolair | 5.0★ (2) | 10 mi |
| Lowry Electric | 3.0★ (2) | 10 mi |
| Mountney Heating and Air Conditioning | 5.0★ (282) | 7 mi |
| Potts Brothers Air Masters Company | 4.9★ (124) | In Norristown |
| Prato Conditioned Air Services | 5.0★ (2) | 11 mi |
| Quality Norristown HVAC Repair | In Norristown | |
| Rinaldi Heating & Air Conditioning Inc | 5.0★ (2) | 8 mi |
| S & A Plumbing | 1.0★ (2) | 4 mi |
| SHANNON HEATING & COOLING | 5.0★ (2) | 3 mi |
| Steve Dunsmore's Plumbing & Heating | 5.0★ (2) | 9 mi |
| T Shannon Conaboy Plumbing & Heating | 4.5★ (2) | 10 mi |
| Toto's Heating & Cooling | 5.0★ (2) | 6 mi |
| Triac Mechanical Services | 5.0★ (2) | 10 mi |
| Wayne Siding, Windows and Roofing Installation Company | 5.0★ (2) | 6 mi |
National price ranges in USD, not adjusted for Norristown. 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 1,115 Norristown 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 Norristown 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 |