25 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Dubuque: Birch Heating & Cooling, CR Score 67/100; 4.8★ from 464 Google reviews; open 24/7.
Best for emergencies (open 24/7): Molo Companies, posts 24/7 hours; ranked #4 of 25.
Most-reviewed: ServiceOne Heating, Cooling, Plumbing, and Electrical, 665 Google reviews at 4.8★, the most of 25 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
25 Dubuque HVAC contractors are ranked here by CR Score, from ten published factors. 6 are open 24/7, 7 open Saturdays and 7 open Sundays, based on posted hours. The median Google rating is 4.4★ across 25 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Birch Heating & Cooling | 67 | 4.8★ (464) | Dubuque | 24/7 | Overall |
| 2 | ServiceOne Heating, Cooling, Plumbing, and Electrical | 63 | 4.8★ (665) | Dubuque | — | Most reviews |
| 3 | All Seasons Heating & Cooling | 59 | 4.7★ (151) | Dubuque | — | — |
| 4 | Molo Companies | 58 | 3.6★ (20) | Dubuque | 24/7 | Emergencies |
| 5 | Haverland Heating & Cooling | 58 | 4.1★ (9) | Dubuque | 24/7 | — |
| 6 | HVAC Services: Heating & Air Conditioning | 57 | 4.4★ (10) | Dubuque | Sat · Sun · Evenings | — |
| 7 | Element Heating & Cooling LLC | 57 | 4.9★ (41) | Dubuque | — | — |
| 8 | Sanco Thermo King - Dubuque | 57 | 4.9★ (34) | Dubuque | — | — |
| 9 | Geisler Brothers Co | 55 | 4.7★ (21) | Dubuque | — | — |
| 10 | J Brimeyer Heating Cooling Fireplace Inc | 55 | 4.3★ (6) | Asbury, 12 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and trade focus: 4.8★ from 464 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dubuque
Ranked #2 because of its Google rating and review volume: 4.8★ from 665 Google reviews, the most in Dubuque.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dubuque
Ranked #3 because of its Google rating and trade focus: 4.7★ from 151 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dubuque
Ranked #4 because of its Google rating and trade focus: 3.6★ from 20 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dubuque
Ranked #5 because of its Google rating and trade focus: 4.1★ from 9 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dubuque
Ranked #6 because of its Google rating and trade focus: 4.4★ from 10 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dubuque
Ranked #7 because of its Google rating and trade focus: 4.9★ from 41 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dubuque
Ranked #8 because of its Google rating and trade focus: 4.9★ from 34 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dubuque
Ranked #9 because of its Google rating and trade focus: 4.7★ from 21 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Asbury, 12 mi away
Ranked #10 because of its Google rating and trade focus: 4.3★ from 6 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Platteville, 19 mi away
Ranked #11 because of its Google rating and trade focus: 4.2★ from 15 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dubuque
Ranked #12 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Dubuque
Ranked #13 because of its Google rating and trade focus: 4.4★ from 15 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dubuque
Ranked #14 because of its Google rating and trade focus: 4.4★ from 11 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dubuque
Ranked #15 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Asbury, 4 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dubuque
Ranked #17 because of its Google rating and trade focus: 4.3★ from 7 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Asbury, 10 mi away
Ranked #18 because of its Google rating and trade focus: 4.2★ from 5 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Platteville, 19 mi away
Ranked #19 because of its Google rating and trade focus: 4.5★ from 46 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dubuque
Ranked #20 because of its Google rating and trade focus: 4.3★ from 18 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Platteville, 15 mi away
Ranked #21 because of its Google rating and trade focus: 4.7★ from 12 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dubuque
Ranked #22 because of its Google rating and review volume: 4.9★ from 27 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Platteville, 19 mi away
Ranked #23 because of its Google rating and trade focus: 4.3★ from 21 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Platteville, 23 mi away
Ranked #24 because of its Google rating and trade focus: 4.4★ from 8 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Platteville, 18 mi away
Ranked #25 because of its Google rating and trade focus: 4.0★ from 3 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
7 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 |
|---|---|---|
| Crawford Company North | 4.9★ (37) | In Dubuque |
| Dubuque Plumbing & Heating | In Dubuque | |
| Four Seasons Geothermal Heating & Cooling | 5.0★ (2) | In Dubuque |
| Harkness Heating & Cooling Llc | 19 mi | |
| Mississippi Valley Plumbing-Heating | In Dubuque | |
| Schwartz Plumbing & Heating | 4.0★ (2) | In Dubuque |
| Vyverberg | In Dubuque |
National price ranges in USD, not adjusted for Dubuque. 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 Iowa, Iowa Plumbing and Mechanical Systems Board (Department of Inspections, Appeals and Licensing) licenses Mechanical (HVAC, refrigeration, hydronic) licenses.
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
In Iowa, 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 25 Dubuque 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 Dubuque 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 |