17 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Monmouth: IHC Heating & Cooling LLC, CR Score 60/100; 5.0★ from 43 Google reviews.
Best for emergencies (open 24/7): Hawk Heating And Cooling, posts 24/7 hours; ranked #2 of 17.
Most-reviewed: Neil Thomas Plumbing & Heating Inc., 83 Google reviews at 4.4★, the most of 17 ranked; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
17 Monmouth HVAC contractors are ranked here by CR Score, from ten published factors. 4 are open 24/7, 8 open Saturdays and 7 open Sundays, based on posted hours. The median Google rating is 4.6★ across 17 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | IHC Heating & Cooling LLC | 60 | 5.0★ (43) | Monmouth | — | Overall |
| 2 | Hawk Heating And Cooling | 60 | 5.0★ (8) | Monmouth | 24/7 | Emergencies |
| 3 | Doug Miller Heating and Cooling | 59 | 4.8★ (37) | Galesburg, 16 mi away | 24/7 | — |
| 4 | Basio Plumbing, Heating & Air | 58 | 4.4★ (77) | Galesburg, 15 mi away | 24/7 | — |
| 5 | Lambasio Incorporated | 57 | 4.6★ (81) | Galesburg, 15 mi away | — | — |
| 6 | Neil Thomas Plumbing & Heating Inc. | 56 | 4.4★ (83) | Galesburg, 16 mi away | — | Most reviews |
| 7 | Maska Heating and Cooling | 56 | 4.8★ (21) | Galesburg, 15 mi away | — | — |
| 8 | Hawk Heating and Cooling | 56 | 5.0★ (3) | Monmouth | Sat · Sun · Evenings | — |
| 9 | Clinton HVAC & Plumbing | 56 | 4.4★ (19) | Clinton, 23 mi away | 24/7 | — |
| 10 | AMP Companies, Inc. | 55 | 4.6★ (38) | Galesburg, 17 mi away | — | — |
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 43 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Monmouth
Ranked #2 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Heating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Galesburg, 16 mi away
Ranked #3 because of its Google rating and trade focus: 4.8★ from 37 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Galesburg, 15 mi away
Ranked #4 because of its Google rating and review volume: 4.4★ from 77 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Galesburg, 15 mi away
Ranked #5 because of its Google rating and trade focus: 4.6★ from 81 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Galesburg, 16 mi away
Ranked #6 because of its Google rating and review volume: 4.4★ from 83 Google reviews, the most in Monmouth.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Galesburg, 15 mi away
Ranked #7 because of its Google rating and trade focus: 4.8★ from 21 Google reviews, listed on Google as “HVAC contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Monmouth
Ranked #8 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Clinton, 23 mi away
Ranked #9 because of its Google rating and trade focus: 4.4★ from 19 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Galesburg, 17 mi away
Ranked #10 because of its Google rating and trade focus: 4.6★ from 38 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Galesburg, 14 mi away
Ranked #11 because of its Google rating and trade focus: 4.4★ from 7 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Galesburg, 19 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Galesburg, 15 mi away
Ranked #13 because of its Google rating and trade focus: 4.4★ from 25 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Galesburg, 14 mi away
Ranked #14 because of its Google rating and trade focus: 4.1★ from 32 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Monmouth
Ranked #15 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Burlington, 25 mi away
Ranked #16 because of its Google rating and trade focus: 4.2★ from 5 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Benton Harbor, 15 mi away
Ranked #17 because of its Google rating and trade focus: 4.4★ from 7 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 Monmouth. 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 17 Monmouth 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 Monmouth 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 |