242 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Westminster: Apple Plumbing, Heating, & Air, CR Score 65/100; 4.9★ from 679 Google reviews; open 24/7.
Best for emergencies (open 24/7): First Class Mechanical, posts 24/7 hours; ranked #2 of 242.
Most-reviewed: Horizon Services - Air Conditioning, Heating, Plumbing, & Electrical, 4,514 Google reviews at 4.8★, the most of 242 ranked; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
242 Westminster HVAC contractors are ranked here by CR Score, from ten published factors. 63 are open 24/7, 117 open Saturdays and 92 open Sundays, based on posted hours. The median Google rating is 4.9★ across 242 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Apple Plumbing, Heating, & Air | 65 | 4.9★ (679) | Westminster | 24/7 | Overall |
| 2 | First Class Mechanical | 65 | 4.9★ (580) | Westminster | 24/7 | Emergencies |
| 3 | Tim Kyle Electric, Heating & Cooling | 64 | 5.0★ (2,777) | Westminster | 24/7 | — |
| 4 | F.H. Furr Plumbing, Heating, Air Conditioning & Electrical | 64 | 4.7★ (1,847) | Eldersburg, 6 mi away | 24/7 | — |
| 5 | Fire n Ice Hvac, Inc | 63 | 5.0★ (90) | Westminster | 24/7 | — |
| 6 | Horizon Services - Air Conditioning, Heating, Plumbing, & Electrical | 62 | 4.8★ (4,514) | Baltimore, 21 mi away | 24/7 | Most reviews |
| 7 | Triple E | 62 | 4.9★ (469) | Reisterstown, 13 mi away | 24/7 | — |
| 8 | Farnen & Dermer | 61 | 4.8★ (931) | Owings Mills, 16 mi away | 24/7 | — |
| 9 | One Hour Air Conditioning & Heating® of Mount Airy | 60 | 4.7★ (852) | Mount Airy, 16 mi away | 24/7 | — |
| 10 | Long Mechanical Services LLC | 60 | 5.0★ (19) | Westminster | 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 679 Google reviews, listed on Google as “HVAC contractor”.
Based in Westminster
Ranked #2 because of its Google rating and trade focus: 4.9★ from 580 Google reviews, listed on Google as “HVAC contractor”.
Based in Westminster
Ranked #3 because of its Google rating and review volume: 5.0★ from 2,777 Google reviews.
Based in Eldersburg, 6 mi away
Ranked #4 because of its Google rating and trade focus: 4.7★ from 1,847 Google reviews, listed on Google as “HVAC contractor”.
Based in Westminster
Ranked #5 because of its Google rating and trade focus: 5.0★ from 90 Google reviews, listed on Google as “HVAC contractor”.
Based in Baltimore, 21 mi away
Ranked #6 because of its Google rating and review volume: 4.8★ from 4,514 Google reviews, the most in Westminster.
Based in Reisterstown, 13 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 469 Google reviews, listed on Google as “HVAC contractor”.
Based in Owings Mills, 16 mi away
Ranked #8 because of its Google rating and trade focus: 4.8★ from 931 Google reviews, listed on Google as “HVAC contractor”.
Based in Mount Airy, 16 mi away
Ranked #9 because of its Google rating and trade focus: 4.7★ from 852 Google reviews, listed on Google as “HVAC contractor”.
Based in Westminster
Ranked #10 because of its Google rating and trade focus: 5.0★ from 19 Google reviews, listed on Google as “HVAC contractor”.
Based in Westminster
Ranked #11 because of its Google rating and trade focus: 4.7★ from 30 Google reviews, listed on Google as “HVAC contractor”.
Based in Owings Mills, 14 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 180 Google reviews, listed on Google as “HVAC contractor”.
Based in Westminster
Ranked #13 because of its Google rating and trade focus: 5.0★ from 357 Google reviews, listed on Google as “HVAC contractor”.
Based in Westminster
Ranked #14 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “HVAC contractor”.
Based in Frederick, 24 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 1,623 Google reviews, listed on Google as “HVAC contractor”.
Based in Hanover, 15 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 134 Google reviews, listed on Google as “HVAC contractor”.
Based in Timonium, 21 mi away
Ranked #17 because of its Google rating and trade focus: 4.8★ from 614 Google reviews, listed on Google as “HVAC contractor”.
Based in Frederick, 22 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 906 Google reviews, listed on Google as “HVAC contractor”.
Based in Westminster
Ranked #19 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “HVAC contractor”.
Based in Hanover, 15 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 73 Google reviews, listed on Google as “HVAC contractor”.
Based in Eldersburg, 23 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 699 Google reviews, listed on Google as “HVAC contractor”.
Based in Frederick, 24 mi away
Ranked #22 because of its Google rating and trade focus: 4.8★ from 537 Google reviews, listed on Google as “HVAC contractor”.
Based in Hampstead, 11 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 33 Google reviews, listed on Google as “HVAC contractor”.
Based in Eldersburg, 16 mi away
Ranked #24 because of its Google rating and trade focus: 4.9★ from 76 Google reviews, listed on Google as “HVAC contractor”.
Based in Frederick, 24 mi away
Ranked #25 because of its Google rating and trade focus: 4.8★ from 414 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 242 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 |
|---|---|---|
| A Quality HVAC | 5.0★ (2) | 6 mi |
| Air Zone Systems, Inc | 5.0★ (2) | In Westminster |
| AM/PM Emergency Services a division of Robert E Clubb & Associates | 5.0★ (2) | 19 mi |
| ASC HVAC | 4.7★ (13) | 19 mi |
| Brick Street Plumbing & HVAC | 4.2★ (364) | 25 mi |
| ClemAIR Heating & Cooling, LLC | 5.0★ (9) | 19 mi |
| Complete HVAC Services, Inc. | 5.0★ (4) | 12 mi |
| Dalton Air Conditioning Repair | 5.0★ (44) | 23 mi |
| Forever Air Duct Cleaning | 5.0★ (6) | 20 mi |
| Free Da Block Drain Cleaning Services, LLC, | 5.0★ (20) | 23 mi |
| Husky Home Services | 4.8★ (40) | 22 mi |
| Incro Tech LLC | In Westminster | |
| K & W Masonry Restoration | 3.0★ (2) | 18 mi |
| Mayne Source Heating & Air | 5.0★ (2) | 15 mi |
| McClure Company | 2.0★ (1) | In Westminster |
| Michael Runk Plumbing & Heating | 5.0★ (1) | In Westminster |
| Quartner’s | 4.6★ (22) | 22 mi |
| SERVPRO of Carroll County | 4.6★ (159) | In Westminster |
| Strive Heating and Cooling LLC | 5.0★ (1) | In Westminster |
| United Air Temp | 4.4★ (88) | 24 mi |
National price ranges in USD, not adjusted for Westminster. 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 Maryland, Maryland State Board of Heating, Ventilation, Air-Conditioning and Refrigeration Contractors licenses Heating, ventilation, air conditioning and refrigeration work.
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
HVAC demand peaks in summer for cooling and in winter for heating. Spring and fall are the easiest times to book maintenance or a replacement.
We scored 242 Westminster 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 Westminster 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 |