610 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Eldersburg: F.H. Furr Plumbing, Heating, Air Conditioning & Electrical, CR Score 64/100; 4.7★ from 1,847 Google reviews; open 24/7.
Best for emergencies (open 24/7): Horizon Services - Air Conditioning, Heating, Plumbing, & Electrical, posts 24/7 hours; ranked #3 of 610.
Most-reviewed: Len The Plumber Heating & Air, LLC, 15,911 Google reviews at 4.7★, the most of 610 ranked; ranked #27.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
610 Eldersburg HVAC contractors are ranked here by CR Score, from ten published factors. 174 are open 24/7, 362 open Saturdays and 271 open Sundays, based on posted hours. The median Google rating is 4.8★ across 610 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | F.H. Furr Plumbing, Heating, Air Conditioning & Electrical | 64 | 4.7★ (1,847) | Eldersburg | 24/7 | Overall |
| 2 | Thomas D. Stern Air Experts Inc. | 63 | 5.0★ (699) | Eldersburg | Sat · Sun · Evenings | — |
| 3 | Horizon Services - Air Conditioning, Heating, Plumbing, & Electrical | 63 | 4.8★ (4,514) | Baltimore, 12 mi away | 24/7 | Emergencies |
| 4 | Farnen & Dermer | 62 | 4.8★ (931) | Owings Mills, 9 mi away | 24/7 | — |
| 5 | Triple E | 62 | 4.9★ (469) | Reisterstown, 8 mi away | 24/7 | — |
| 6 | GAC Services | 62 | 4.9★ (6,908) | Gaithersburg, 22 mi away | 24/7 | — |
| 7 | First Class Mechanical | 61 | 4.9★ (580) | Westminster, 11 mi away | 24/7 | — |
| 8 | Brothers HVAC LLC | 61 | 4.9★ (76) | Eldersburg | 24/7 | — |
| 9 | One Hour Air Conditioning & Heating® of Mount Airy | 61 | 4.7★ (852) | Mount Airy, 10 mi away | 24/7 | — |
| 10 | Apple Plumbing, Heating, & Air | 60 | 4.9★ (679) | Westminster, 15 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 Eldersburg
Based in Eldersburg
Ranked #1 because of its Google rating and trade focus: 4.7★ from 1,847 Google reviews, listed on Google as “HVAC contractor”.
Based in Eldersburg
Ranked #2 because of its Google rating and trade focus: 5.0★ from 699 Google reviews, listed on Google as “HVAC contractor”.
Based in Baltimore, 12 mi away
Ranked #3 because of its Google rating and trade focus: 4.8★ from 4,514 Google reviews, listed on Google as “HVAC contractor”.
Based in Owings Mills, 9 mi away
Ranked #4 because of its Google rating and trade focus: 4.8★ from 931 Google reviews, listed on Google as “HVAC contractor”.
Based in Reisterstown, 8 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 469 Google reviews, listed on Google as “HVAC contractor”.
Based in Gaithersburg, 22 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 6,908 Google reviews, listed on Google as “Heating contractor”.
Based in Westminster, 11 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 580 Google reviews, listed on Google as “HVAC contractor”.
Based in Eldersburg
Ranked #8 because of its Google rating and trade focus: 4.9★ from 76 Google reviews, listed on Google as “HVAC contractor”.
Based in Mount Airy, 10 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, 15 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 679 Google reviews, listed on Google as “HVAC contractor”.
Based in Westminster, 5 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 90 Google reviews, listed on Google as “HVAC contractor”.
Based in Gaithersburg, 20 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 1,701 Google reviews, listed on Google as “HVAC contractor”.
Based in Owings Mills, 8 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 180 Google reviews, listed on Google as “HVAC contractor”.
Based in Eldersburg
Ranked #14 because of its Google rating and trade focus: 5.0★ from 40 Google reviews, listed on Google as “HVAC contractor”.
Based in Baltimore, 23 mi away
Ranked #15 because of its Google rating and trade focus: 4.7★ from 8,039 Google reviews, listed on Google as “HVAC contractor”.
Based in Gaithersburg, 20 mi away
Ranked #16 because of its Google rating and trade focus: 4.8★ from 2,083 Google reviews, listed on Google as “HVAC contractor”.
Based in Eldersburg
Ranked #17 because of its Google rating and trade focus: 5.0★ from 30 Google reviews, listed on Google as “HVAC contractor”.
Based in Rockville, 24 mi away
Ranked #18 because of its Google rating and trade focus: 4.7★ from 5,985 Google reviews, listed on Google as “HVAC contractor”.
Based in Baltimore, 21 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 786 Google reviews, listed on Google as “HVAC contractor”.
Based in Columbia, 17 mi away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 658 Google reviews, listed on Google as “HVAC contractor”.
Based in Gaithersburg, 20 mi away
Ranked #21 because of its Google rating and trade focus: 4.8★ from 1,700 Google reviews, listed on Google as “HVAC contractor”.
Based in Westminster, 12 mi away
Ranked #22 because of its Google rating and review volume: 5.0★ from 2,777 Google reviews.
Based in Eldersburg
Ranked #23 because of its Google rating and trade focus: 5.0★ from 216 Google reviews, listed on Google as “Plumber”.
Based in Arbutus, 17 mi away
Ranked #24 because of its Google rating and trade focus: 4.9★ from 419 Google reviews, listed on Google as “HVAC contractor”.
Based in Timonium, 17 mi away
Ranked #25 because of its Google rating and trade focus: 4.8★ from 614 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 610 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 - PTH Dryer Vent Cleaning & Air Duct Cleaning Services Co, MD 21784 | 5.0★ (4) | In Eldersburg |
| A Quality HVAC | 5.0★ (2) | In Eldersburg |
| Air Source Inc. | 5.0★ (1) | In Eldersburg |
| Arundel Service Experts | 4.7★ (472) | 20 mi |
| ASC HVAC | 4.7★ (13) | In Eldersburg |
| Bad Monkey Electric (Tim Kyle Electric Company) | 4.9★ (217) | In Eldersburg |
| Beltway Air Conditioning, Heating & Plumbing | 4.9★ (90) | 14 mi |
| Bilo Services | 5.0★ (1) | In Eldersburg |
| Brosenne Electric Service Inc | 4.9★ (250) | In Eldersburg |
| Flow Environmental Home Services | In Eldersburg | |
| Fresh Air Concepts, LLC | 4.9★ (217) | 20 mi |
| Honest Mechanical Contracting | In Eldersburg | |
| JC & JC HVAC | 4.7★ (503) | 21 mi |
| Liberty Plumbing & Heating, Inc. | In Eldersburg | |
| Mayne Source Heating & Air | 5.0★ (2) | In Eldersburg |
| O'Brians Plumbing & Heating | 5.0★ (1) | In Eldersburg |
| Target Electric Co | 4.6★ (7) | In Eldersburg |
| Tario HVAC, LLC | 4.9★ (142) | 17 mi |
| Tulip Carpet Cleaning Eldersburg | 4.9★ (43) | In Eldersburg |
| Vito Services | 4.7★ (1,351) | 24 mi |
National price ranges in USD, not adjusted for Eldersburg. 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 610 Eldersburg 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 Eldersburg 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 |