Top 50 of 196 HVAC contractors, in emergency orderUpdated 0 paid placements in this rankingHow we rank
24 of the 50 HVAC contractors on this list post 24/7 hours. 24/7 businesses come first, then same-day, each ranked by CR Score with availability weighted higher.
#1 for emergency heating and cooling in DeKalb: Service Now Home Services, open 24/7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
| Rank | Business | CR Score | Google rating | Based in | Hours |
|---|---|---|---|---|---|
| 1 | Service Now Home Services | 67 | 4.9★ (879) | DeKalb | 24/7 |
| 2 | Hero Heating & Air Conditioning | 64 | 4.8★ (209) | DeKalb | 24/7 |
| 3 | Comfort Ness Heating & Cooling | 64 | 5.0★ (127) | DeKalb | 24/7 |
| 4 | Joiner's HVAC, Inc. | 64 | 5.0★ (129) | DeKalb | 24/7 |
| 5 | Smith-Dahlquist, Inc. | 63 | 4.9★ (194) | Sycamore, 5 mi away | 24/7 |
| 6 | All-Star Heating & Air Conditioning Inc. | 63 | 4.5★ (138) | DeKalb | 24/7 |
| 7 | McNally's Heating and Cooling | 62 | 4.9★ (2,593) | Batavia, 24 mi away | 24/7 |
| 8 | Cady Heating and Cooling | 62 | 4.8★ (128) | Sycamore, 5 mi away | 24/7 |
| 9 | G & R Heating and Air | 62 | 4.8★ (2,067) | Gilberts, 23 mi away | 24/7 |
| 10 | One Hour Heating & Air Conditioning | 62 | 4.9★ (1,873) | Saint Charles, 25 mi away | 24/7 |
24/7 hours mean the business says its phone is answered around the clock. Arrival time depends on where the crew is. Ask for an arrival window when you call.
Open 24/7 · 4.9 from 879 Google reviews
#2Hero Heating & Air Conditioning
Open 24/7 · 4.8 from 209 Google reviews
#3Comfort Ness Heating & Cooling
Open 24/7 · 5.0 from 127 Google reviews
Open 24/7 · 5.0 from 129 Google reviews
Open 24/7 · 4.9 from 194 Google reviews
#6All-Star Heating & Air Conditioning Inc.
Open 24/7 · 4.5 from 138 Google reviews
#7McNally's Heating and Cooling
Open 24/7 · 4.9 from 2,593 Google reviews
Open 24/7 · 4.8 from 128 Google reviews
24/7 first, then same-day service, then the rest. Each group is in CR Score order on emergency weights. The full ranking of all 196 is on the HVAC contractors page.
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 879 Google reviews, listed on Google as “Heating contractor”.
Based in DeKalb
Ranked #2 because of its Google rating and trade focus: 4.8★ from 209 Google reviews, listed on Google as “HVAC contractor”.
Based in DeKalb
Ranked #3 because of its Google rating and trade focus: 5.0★ from 127 Google reviews, listed on Google as “HVAC contractor”.
Based in DeKalb
Ranked #4 because of its Google rating and trade focus: 5.0★ from 129 Google reviews, listed on Google as “HVAC contractor”.
Based in Sycamore, 5 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 194 Google reviews, listed on Google as “HVAC contractor”.
Based in DeKalb
Ranked #6 because of its Google rating and trade focus: 4.5★ from 138 Google reviews, listed on Google as “HVAC contractor”.
Based in Batavia, 24 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 2,593 Google reviews, listed on Google as “HVAC contractor”.
Based in Sycamore, 5 mi away
Ranked #8 because of its Google rating and trade focus: 4.8★ from 128 Google reviews, listed on Google as “HVAC contractor”.
Based in Gilberts, 23 mi away
Ranked #9 because of its Google rating and trade focus: 4.8★ from 2,067 Google reviews, listed on Google as “HVAC contractor”.
Based in Saint Charles, 25 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 1,873 Google reviews, listed on Google as “HVAC contractor”.
Based in Elgin, 23 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 1,021 Google reviews, listed on Google as “HVAC contractor”.
Based in Aurora, 25 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 1,637 Google reviews, listed on Google as “HVAC contractor”.
Based in Elgin, 21 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 776 Google reviews, listed on Google as “HVAC contractor”.
Based in Elgin, 23 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 784 Google reviews, listed on Google as “HVAC contractor”.
Based in Geneva, 24 mi away
Ranked #15 because of its Google rating and trade focus: 4.8★ from 1,224 Google reviews, listed on Google as “HVAC contractor”.
Based in Rockford, 18 mi away
Ranked #16 because of its Google rating and trade focus: 4.8★ from 463 Google reviews, listed on Google as “HVAC contractor”.
Based in DeKalb
Ranked #17 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “HVAC contractor”.
Based in Sycamore, 5 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 38 Google reviews, listed on Google as “HVAC contractor”.
Based in Hampshire, 16 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 153 Google reviews, listed on Google as “HVAC contractor”.
Based in Elburn, 14 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 103 Google reviews, listed on Google as “HVAC contractor”.
Based in Aurora, 23 mi away
Ranked #21 because of its Google rating and trade focus: 4.9★ from 440 Google reviews, listed on Google as “HVAC contractor”.
Based in Rochelle, 16 mi away
Ranked #22 because of its Google rating and trade focus: 4.9★ from 154 Google reviews, listed on Google as “HVAC contractor”.
Based in Montgomery, 25 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 434 Google reviews, listed on Google as “Furnace repair service”.
Based in North Aurora, 23 mi away
Ranked #24 because of its Google rating and trade focus: 4.9★ from 422 Google reviews, listed on Google as “HVAC contractor”.
Based in Sycamore, 5 mi away
Ranked #25 because of its Google rating and trade focus: 4.6★ from 47 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.
Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 HVAC contractors are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.
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 |
|---|---|---|
| Reputation | 15% | Google star rating, adjusted for how many reviews back it |
| Credentials | 15% | Active state license, bond and workers’ comp on file |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list |
| Recency | 5% | Share of reviews from the last 12 months |
| Availability | 15% | Weekly open hours, Saturday, Sunday, 24/7 or same-day |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) |
| Proximity | 5% | Based in the city scores highest, less the farther away it is |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are |