30 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Ottawa: Dalton's Heating and Cooling LLC, CR Score 68/100; 5.0★ from 715 Google reviews; open 24/7.
Best for emergencies (open 24/7): All Seasons Air Conditioning, Heating, & Plumbing, posts 24/7 hours; ranked #2 of 30.
Most-reviewed: Santa Fe Heating & Air, 1,397 Google reviews at 4.9★, the most of 30 ranked; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
30 Ottawa HVAC contractors are ranked here by CR Score, from ten published factors. 11 are open 24/7, 16 open Saturdays and 14 open Sundays, based on posted hours. The median Google rating is 4.9★ across 30 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Dalton's Heating and Cooling LLC | 68 | 5.0★ (715) | Ottawa | 24/7 | Overall |
| 2 | All Seasons Air Conditioning, Heating, & Plumbing | 63 | 4.8★ (111) | Ottawa | 24/7 | Emergencies |
| 3 | Santa Fe Heating & Air | 62 | 4.9★ (1,397) | Gardner, 24 mi away | 24/7 | Most reviews |
| 4 | Cloud Heating & Air Conditioning | 62 | 4.9★ (932) | Lawrence, 22 mi away | 24/7 | — |
| 5 | Dunco Heating, Cooling & Plumbing | 62 | 4.9★ (907) | Lawrence, 23 mi away | 24/7 | — |
| 6 | AA Drain Medic | 61 | 4.8★ (78) | Ottawa | Sat · Sun | — |
| 7 | KB Complete Plumbing, Heating, Cooling & Electrical Inc. | 60 | 5.0★ (243) | Lawrence, 23 mi away | 24/7 | — |
| 8 | Westerhouse Heating and Cooling, Inc. | 60 | 5.0★ (255) | Eudora, 23 mi away | 24/7 | — |
| 9 | Hiatt Service LLC | 59 | 5.0★ (117) | Ottawa | — | — |
| 10 | Wilson Home Comfort | 59 | 5.0★ (140) | Bonner Springs, 10 mi away | Sat · Evenings | — |
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: 5.0★ from 715 Google reviews, listed on Google as “Furnace repair service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ottawa
Ranked #2 because of its Google rating and trade focus: 4.8★ from 111 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Gardner, 24 mi away
Ranked #3 because of its Google rating and review volume: 4.9★ from 1,397 Google reviews, the most in Ottawa.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lawrence, 22 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 932 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lawrence, 23 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 907 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ottawa
Ranked #6 because of its Google rating and trade focus: 4.8★ from 78 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lawrence, 23 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 243 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Eudora, 23 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 255 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ottawa
Ranked #9 because of its Google rating and trade focus: 5.0★ from 117 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bonner Springs, 10 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 140 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lawrence, 22 mi away
Ranked #11 because of its Google rating and trade focus: 4.8★ from 51 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Gardner, 22 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 33 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lawrence, 21 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 348 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lawrence, 23 mi away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 155 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Gardner, 24 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 39 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lawrence, 22 mi away
Ranked #16 because of its Google rating and trade focus: 4.5★ from 15 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ottawa
Ranked #17 because of its Google rating and trade focus: 4.8★ from 111 Google reviews, listed on Google as “Appliance repair service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Topeka, 15 mi away
Ranked #18 because of its Google rating and trade focus: 4.9★ from 86 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ottawa
Ranked #19 because of its Google rating and trade focus: 3.9★ from 29 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lawrence, 24 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Gardner, 24 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 26 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Paola, 21 mi away
Ranked #22 because of its Google rating and trade focus: 4.7★ from 83 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Spring Hill, 19 mi away
Ranked #23 because of its Google rating and trade focus: 4.6★ from 21 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lawrence, 21 mi away
Ranked #24 because of its Google rating and trade focus: 3.9★ from 8 Google reviews, listed on Google as “Heating contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Paola, 22 mi away
Ranked #25 because of its Google rating and trade focus: 4.6★ from 29 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#1 to #25 are shown in full above. Here are #26 to #30, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Homer’s River City Heating and Cooling, Inc. | 49 | 4.5★ (17) | 22 mi |
| 27 | Airtek Heating & Cooling | 49 | 4.7★ (15) | 23 mi |
| 28 | Freunds Service Inc | 49 | 3.3★ (3) | 22 mi |
| 29 | P1 Construction, LLC | 48 | 3.6★ (13) | 23 mi |
| 30 | U.S. Engineering | 48 | 5.0★ (4) | 23 mi |
12 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 |
|---|---|---|
| Carrier Sales & Services | 22 mi | |
| Chambers Mechanical Heating & AC | 5.0★ (1) | 23 mi |
| Hiatt Cooling & Heating | In Ottawa | |
| Holsinger Heating and Cooling | 5.0★ (1) | 16 mi |
| KC Pier Foundation and Basement Waterproofing | 5.0★ (65) | In Ottawa |
| Lippert Mechanical | 24 mi | |
| River City Heating & Cooling | 3.0★ (2) | 19 mi |
| RME Heating and AC LLC | 22 mi | |
| Scruggs Services | 17 mi | |
| Uncle Sam Services | 15 mi | |
| USA Mechanical Inc | 22 mi | |
| WileyHVAC LLC | 24 mi |
National price ranges in USD, not adjusted for Ottawa. 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 |
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 30 Ottawa 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 Ottawa 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 |