567 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Essex: Michael & Son Services, CR Score 65/100; 4.7★ from 8,039 Google reviews; open 24/7.
Best for emergencies (open 24/7): Complete Climate Services LLC, posts 24/7 hours; ranked #2 of 567.
Most-reviewed: Len The Plumber Heating & Air, LLC, 15,911 Google reviews at 4.7★, the most of 567 ranked; ranked #16.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
567 Essex HVAC contractors are ranked here by CR Score, from ten published factors. 175 are open 24/7, 344 open Saturdays and 260 open Sundays, based on posted hours. The median Google rating is 4.8★ across 567 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Michael & Son Services | 65 | 4.7★ (8,039) | Baltimore, 3 mi away | 24/7 | Overall |
| 2 | Complete Climate Services LLC | 63 | 5.0★ (786) | Baltimore, 6 mi away | 24/7 | Emergencies |
| 3 | Maryland Heating & Air | 63 | 4.9★ (369) | Essex | 24/7 | — |
| 4 | Contemporary Air Systems, Inc. | 63 | 5.0★ (195) | Essex | 24/7 | — |
| 5 | Hughes Mechanical, LLC | 63 | 4.8★ (408) | Essex | 24/7 | — |
| 6 | Boothe's Heating, Air, Plumbing, Drains & Electrical | 63 | 4.9★ (1,461) | Dundalk, 10 mi away | 24/7 | — |
| 7 | Horizon Services - Air Conditioning, Heating, Plumbing, & Electrical | 62 | 4.8★ (4,514) | Baltimore, 15 mi away | 24/7 | — |
| 8 | Reliability Home Services | 62 | 4.7★ (539) | Dundalk, 3 mi away | 24/7 | — |
| 9 | At Your Service Heating and Cooling LLC | 62 | 4.6★ (811) | Baltimore, 3 mi away | 24/7 | — |
| 10 | Albright's Mechanical Services | 62 | 4.8★ (530) | Essex | 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: 4.7★ from 8,039 Google reviews, listed on Google as “HVAC contractor”.
Based in Baltimore, 6 mi away
Ranked #2 because of its Google rating and trade focus: 5.0★ from 786 Google reviews, listed on Google as “HVAC contractor”.
Based in Essex
Ranked #3 because of its Google rating and trade focus: 4.9★ from 369 Google reviews, listed on Google as “HVAC contractor”.
Based in Essex
Ranked #4 because of its Google rating and trade focus: 5.0★ from 195 Google reviews, listed on Google as “HVAC contractor”.
Based in Essex
Ranked #5 because of its Google rating and trade focus: 4.8★ from 408 Google reviews, listed on Google as “HVAC contractor”.
Based in Dundalk, 10 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 1,461 Google reviews, listed on Google as “HVAC contractor”.
Based in Baltimore, 15 mi away
Ranked #7 because of its Google rating and trade focus: 4.8★ from 4,514 Google reviews, listed on Google as “HVAC contractor”.
Based in Dundalk, 3 mi away
Ranked #8 because of its Google rating and trade focus: 4.7★ from 539 Google reviews, listed on Google as “HVAC contractor”.
Based in Baltimore, 3 mi away
Ranked #9 because of its Google rating and trade focus: 4.6★ from 811 Google reviews, listed on Google as “HVAC contractor”.
Based in Essex
Ranked #10 because of its Google rating and trade focus: 4.8★ from 530 Google reviews, listed on Google as “HVAC contractor”.
Based in Rosedale, 2 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 400 Google reviews, listed on Google as “HVAC contractor”.
Based in Arbutus, 10 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 419 Google reviews, listed on Google as “HVAC contractor”.
Based in Dundalk, 3 mi away
Ranked #13 because of its Google rating and trade focus: 4.7★ from 247 Google reviews, listed on Google as “HVAC contractor”.
Based in Baltimore, 8 mi away
Ranked #14 because of its Google rating and trade focus: 4.8★ from 354 Google reviews, listed on Google as “HVAC contractor”.
Based in Joppatowne, 9 mi away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 244 Google reviews, listed on Google as “HVAC contractor”.
Based in Arbutus, 11 mi away
Ranked #16 because of its Google rating and review volume: 4.7★ from 15,911 Google reviews, the most in Essex.
Based in Annapolis, 23 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 2,904 Google reviews, listed on Google as “HVAC contractor”.
Based in Hanover, 15 mi away
Ranked #18 because of its Google rating and trade focus: 4.9★ from 2,167 Google reviews, listed on Google as “HVAC contractor”.
Based in Timonium, 13 mi away
Ranked #19 because of its Google rating and trade focus: 4.8★ from 614 Google reviews, listed on Google as “HVAC contractor”.
Based in Kew Gardens Hills, 8 mi away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 177 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Cockeysville, 11 mi away
Ranked #21 because of its Google rating and trade focus: 4.9★ from 726 Google reviews, listed on Google as “HVAC contractor”.
Based in Bel Air North, 19 mi away
Ranked #22 because of its Google rating and trade focus: 4.5★ from 7,297 Google reviews, listed on Google as “Heating contractor”.
Based in Edgewood, 13 mi away
Ranked #23 because of its Google rating and trade focus: 4.9★ from 337 Google reviews, listed on Google as “HVAC contractor”.
Based in Essex
Ranked #24 because of its Google rating and trade focus: 5.0★ from 32 Google reviews, listed on Google as “HVAC contractor”.
Based in Arbutus, 12 mi away
Ranked #25 because of its Google rating and trade focus: 4.9★ from 275 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 567 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 |
|---|---|---|
| Alban Mechanical | 3.0★ (2) | 12 mi |
| All About Everything HVAC & Maintenance | 3.0★ (2) | 13 mi |
| Bennett Air Care LLC | 5.0★ (2) | 9 mi |
| Capitol Boiler Works | 1.0★ (2) | 11 mi |
| Commercial CAD | 5.0★ (2) | 1 mi |
| D&J solutions LLC | 4.9★ (17) | 2 mi |
| DJE Plumbing and Heating | 5.0★ (2) | 7 mi |
| DM3 Heating & Air | 5.0★ (2) | 6 mi |
| East Coast Home Services | 5.0★ (1) | In Essex |
| Elite Heating And Cooling | 3.0★ (2) | 8 mi |
| Excel Services | 4.9★ (411) | 21 mi |
| Modern Comfort | In Essex | |
| One Hour Air Conditioning & Heating® of Harford County | 4.8★ (292) | 19 mi |
| R & G Plumbing & Heating | 5.0★ (2) | In Essex |
| Ready Air HVAC | 5.0★ (2) | 4 mi |
| Scardina Plumbing-Heating Inc | 5.0★ (2) | 7 mi |
| Shielded Edge Property Solutions | 5.0★ (2) | 12 mi |
| TRIO HVACR SERVICES | 5.0★ (2) | 1 mi |
| United Air Temp | 4.4★ (88) | 9 mi |
| Wrangler Plumbing & Heating | 5.0★ (2) | 12 mi |
National price ranges in USD, not adjusted for Essex. 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 567 Essex 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 Essex 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 |