21 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Mendota: Triple Service Inc., CR Score 68/100; 4.8★ from 699 Google reviews; open 24/7.
Best for emergencies (open 24/7): One Stop Heating & Cooling, posts 24/7 hours; ranked #2 of 21.
Most-reviewed: Summit Heating & Air Conditioning LLC, 155 Google reviews at 4.8★, the most of 21 ranked after Triple Service Inc.; ranked #9.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
21 Mendota HVAC contractors are ranked here by CR Score, from ten published factors. 10 are open 24/7, 10 open Saturdays and 10 open Sundays, based on posted hours. The median Google rating is 4.8★ across 21 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Triple Service Inc. | 68 | 4.8★ (699) | Mendota | 24/7 | Overall |
| 2 | One Stop Heating & Cooling | 62 | 5.0★ (31) | Mendota | 24/7 | Emergencies |
| 3 | Correa Heating & Air Conditioning | 61 | 5.0★ (20) | Mendota | 24/7 | — |
| 4 | Lanphierd Heating and Cooling | 59 | 5.0★ (70) | Ottawa, 19 mi away | 24/7 | — |
| 5 | Town & Country Services | 59 | 4.7★ (153) | Princeton, 22 mi away | 24/7 | — |
| 6 | John's Service and Sales, Inc. | 58 | 4.5★ (82) | Peru, 18 mi away | 24/7 | — |
| 7 | A&G Heating and Air Conditioning, LLC " Gas fireplace services" | 58 | 5.0★ (16) | Peru, 12 mi away | 24/7 | — |
| 8 | Hometown Heating & Cooling Co | 57 | 4.8★ (34) | Ottawa, 20 mi away | 24/7 | — |
| 9 | Summit Heating & Air Conditioning LLC | 56 | 4.8★ (155) | Spring Valley, 16 mi away | — | Most reviews |
| 10 | Starved Rock Heating & Cooling | 55 | 4.5★ (15) | Ottawa, 21 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 review volume: 4.8★ from 699 Google reviews, the most in Mendota.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Mendota
Ranked #2 because of its Google rating and trade focus: 5.0★ from 31 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Mendota
Ranked #3 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ottawa, 19 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 70 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Princeton, 22 mi away
Ranked #5 because of its Google rating and trade focus: 4.7★ from 153 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Peru, 18 mi away
Ranked #6 because of its Google rating and trade focus: 4.5★ from 82 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Peru, 12 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ottawa, 20 mi away
Ranked #8 because of its Google rating and trade focus: 4.8★ from 34 Google reviews, listed on Google as “Heating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Spring Valley, 16 mi away
Ranked #9 because of its Google rating and trade focus: 4.8★ from 155 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ottawa, 21 mi away
Ranked #10 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, 24 mi away
Ranked #11 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 Peru, 14 mi away
Ranked #12 because of its Google rating and trade focus: 4.8★ from 38 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sandwich, 25 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 106 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sandwich, 23 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Heating contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Rochelle, 24 mi away
Ranked #15 because of its Google rating and trade focus: 4.8★ from 24 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ottawa, 20 mi away
Ranked #16 because of its Google rating and trade focus: 3.3★ from 4 Google reviews, listed on Google as “Heating contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Princeton, 20 mi away
Ranked #17 because of its Google rating and trade focus: 4.7★ from 3 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Plano, 22 mi away
Ranked #18 because of its Google rating and trade focus: 4.0★ from 4 Google reviews, listed on Google as “Heating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ottawa, 19 mi away
Ranked #19 because of its Google rating and trade focus: 3.2★ from 5 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Ottawa, 20 mi away
Ranked #20 because of its Google rating and trade focus: 3.7★ from 3 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Ottawa, 20 mi away
Ranked #21 because of its Google rating and trade focus: 3.7★ from 12 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
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 |
|---|---|---|
| Campbell Plumbing & Heating | In Mendota | |
| Carl Ellberg Jr Plumbing & Heating | 21 mi | |
| Dan Whitlock Plumbing & Heating | 5.0★ (1) | 22 mi |
| Electric | 2.3★ (3) | In Mendota |
| Hornung Electric & Mechanical Inc. | 5.0★ (6) | In Mendota |
| J.W Duct Cleaning | 1.0★ (1) | 22 mi |
| Mendez General Contractor | 5.0★ (2) | 12 mi |
| Nickelsen Plumbing Heating & AC | 22 mi | |
| Senica Cooling & Heating | 14 mi | |
| Service Pros | 15 mi | |
| Turbaire one of Sandwich | 5.0★ (2) | 24 mi |
| Vitality HVAC/DUCT Cleaning | 5.0★ (1) | 16 mi |
National price ranges in USD, not adjusted for Mendota. 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 21 Mendota 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 Mendota 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 |