9 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Vermillion: Kalins Indoor Comfort, CR Score 68/100; 4.9★ from 593 Google reviews; open 24/7.
Best for emergencies (open 24/7): Steve's Comfort Systems, posts 24/7 hours; ranked #2 of 9.
Most-reviewed: Kalins Indoor Comfort, 377 Google reviews at 5.0★, the most of 9 ranked after Kalins Indoor Comfort; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
9 Vermillion HVAC contractors are ranked here by CR Score, from ten published factors. 7 are open 24/7, 7 open Saturdays and 7 open Sundays, based on posted hours. The median Google rating is 4.9★ across 9 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Kalins Indoor Comfort | 68 | 4.9★ (593) | Vermillion | 24/7 | Overall |
| 2 | Steve's Comfort Systems | 62 | 4.6★ (37) | Vermillion | 24/7 | Emergencies |
| 3 | Kalins Indoor Comfort | 62 | 5.0★ (377) | Yankton, 25 mi away | 24/7 | Most reviews |
| 4 | James Heating & Cooling | 58 | 3.7★ (3) | Vermillion | 24/7 | — |
| 5 | Yankton Heating & Cooling | 58 | 4.8★ (53) | Yankton, 22 mi away | 24/7 | — |
| 6 | Dakota Comfort Heating & AC LLC | 58 | 5.0★ (44) | Sioux City, 23 mi away | 24/7 | — |
| 7 | Grassland Heating and Cooling | 57 | 5.0★ (23) | Yankton, 22 mi away | 24/7 | — |
| 8 | G Pulse Plumbing, Heating, and Cooling | 56 | 5.0★ (4) | Vermillion | — | — |
| 9 | Larry's Heating & Cooling | 56 | 4.7★ (14) | Vermillion | — | — |
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 review volume: 4.9★ from 593 Google reviews, the most in Vermillion.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Vermillion
Ranked #2 because of its Google rating and trade focus: 4.6★ from 37 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Yankton, 25 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 377 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Vermillion
Ranked #4 because of its Google rating and trade focus: 3.7★ from 3 Google reviews, listed on Google as “Heating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Yankton, 22 mi away
Ranked #5 because of its Google rating and trade focus: 4.8★ from 53 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sioux City, 23 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 44 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Yankton, 22 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 23 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Vermillion
Ranked #8 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “HVAC contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Vermillion
Ranked #9 because of its Google rating and trade focus: 4.7★ from 14 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
National price ranges in USD, not adjusted for Vermillion. 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 South Dakota, 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 9 Vermillion 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 Vermillion 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 |