15 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Rock Falls: Loescher Heating & Air Conditioning, CR Score 65/100; 4.5★ from 133 Google reviews; open 24/7.
Best for emergencies (open 24/7): Comfort Zone Heating & Cooling, posts 24/7 hours; ranked #2 of 15.
Most-reviewed: Sauk Valley Plumbing & Heating, 74 Google reviews at 4.6★, the most of 15 ranked after Loescher Heating & Air Conditioning; ranked #10.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
15 Rock Falls HVAC contractors are ranked here by CR Score, from ten published factors. 5 are open 24/7, 7 open Saturdays and 5 open Sundays, based on posted hours. The median Google rating is 4.6★ across 15 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Loescher Heating & Air Conditioning | 65 | 4.5★ (133) | Sterling, 3 mi away | 24/7 | Overall |
| 2 | Comfort Zone Heating & Cooling | 63 | 5.0★ (24) | Rock Falls | 24/7 | Emergencies |
| 3 | Kness Heating & Cooling | 61 | 5.0★ (18) | Sterling, 1 mi away | 24/7 | — |
| 4 | Davis Complete Heating & Cooling | 60 | 4.7★ (48) | Sterling, 2 mi away | Sat | — |
| 5 | Sterling Heating & Cooling | 59 | 4.1★ (22) | Sterling, 1 mi away | Sat · Sun · Evenings | — |
| 6 | Eikenberry Sheet Metal Works | 57 | 4.0★ (4) | Rock Falls | 24/7 | — |
| 7 | MO-ST Plumbing & Mechanical, LLC | 57 | 4.3★ (41) | Rock Falls | — | — |
| 8 | D & W Air Solutions, Inc | 56 | 4.2★ (32) | Rock Falls | — | — |
| 9 | SPK Plumbing & Heating | 56 | 5.0★ (57) | Rock Falls | — | — |
| 10 | Sauk Valley Plumbing & Heating | 56 | 4.6★ (74) | Rock Falls | — | Most reviews |
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: 4.5★ from 133 Google reviews, the most in Rock Falls.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rock Falls
Ranked #2 because of its Google rating and trade focus: 5.0★ from 24 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sterling, 1 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 18 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sterling, 2 mi away
Ranked #4 because of its Google rating and trade focus: 4.7★ from 48 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sterling, 1 mi away
Ranked #5 because of its Google rating and trade focus: 4.1★ from 22 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rock Falls
Ranked #6 because of its Google rating and trade focus: 4.0★ from 4 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rock Falls
Ranked #7 because of its Google rating and trade focus: 4.3★ from 41 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rock Falls
Ranked #8 because of its Google rating and trade focus: 4.2★ from 32 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rock Falls
Ranked #9 because of its Google rating and review volume: 5.0★ from 57 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rock Falls
Ranked #10 because of its Google rating and review volume: 4.6★ from 74 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dixon, 9 mi away
Ranked #11 because of its Google rating and trade focus: 3.4★ from 18 Google reviews, listed on Google as “Heating contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Dixon, 11 mi away
Ranked #12 because of its Google rating and trade focus: 3.9★ from 30 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rock Falls
Ranked #13 because of its Google rating and review volume: 4.7★ from 24 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sterling, 5 mi away
Ranked #14 because of its Google rating and trade focus: 4.7★ from 27 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dixon, 14 mi away
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.
1 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 |
|---|---|---|
| Galt heating and cooling | 5.0★ (1) | 2 mi |
National price ranges in USD, not adjusted for Rock Falls. 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 Illinois, 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 15 Rock Falls 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 Rock Falls 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 |