1,525 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Harwood Heights: Deljo Heating, Cooling & Plumbing, CR Score 65/100; 4.9★ from 3,196 Google reviews; open 24/7.
Best for emergencies (open 24/7): All Temp Heating and Air Conditioning, posts 24/7 hours; ranked #2 of 1,525.
Most-reviewed: Four Seasons Heating, Air Conditioning, Plumbing, & Electric, 27,709 Google reviews at 4.7★, the most of 1,525 ranked; ranked #7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
1,525 Harwood Heights HVAC contractors are ranked here by CR Score, from ten published factors. 629 are open 24/7, 1,176 open Saturdays and 955 open Sundays, based on posted hours. The median Google rating is 4.9★ across 1,525 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Deljo Heating, Cooling & Plumbing | 65 | 4.9★ (3,196) | Chicago, 4 mi away | 24/7 | Overall |
| 2 | All Temp Heating and Air Conditioning | 64 | 4.9★ (2,253) | Chicago, 4 mi away | 24/7 | Emergencies |
| 3 | Besco Air Inc. | 64 | 4.9★ (1,342) | Chicago, 2 mi away | 24/7 | — |
| 4 | Freedom Heating, Cooling & Electrical | 64 | 4.9★ (2,121) | Franklin Park, 4 mi away | 24/7 | — |
| 5 | Shavitz Heating and Air Conditioning | 64 | 4.9★ (2,707) | Skokie, 6 mi away | 24/7 | — |
| 6 | Goode Plumbing | 64 | 4.8★ (2,374) | Chicago, 4 mi away | 24/7 | — |
| 7 | Four Seasons Heating, Air Conditioning, Plumbing, & Electric | 63 | 4.7★ (27,709) | Chicago, 15 mi away | 24/7 | Most reviews |
| 8 | ABC Plumbing, Sewer, Heating, Cooling & Electric | 63 | 4.7★ (22,524) | Arlington Heights, 15 mi away | 24/7 | — |
| 9 | Oasis Plumbing, Heating & Cooling | 63 | 4.9★ (1,055) | Chicago, 6 mi away | 24/7 | — |
| 10 | Guardian Heating & Cooling Service | 63 | 4.8★ (1,189) | Chicago, 5 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Ranked #1 because of its Google rating and trade focus: 4.9★ from 3,196 Google reviews, listed on Google as “HVAC contractor”.
Based in Chicago, 4 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 2,253 Google reviews, listed on Google as “HVAC contractor”.
Based in Chicago, 2 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 1,342 Google reviews, listed on Google as “HVAC contractor”.
Based in Franklin Park, 4 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 2,121 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Skokie, 6 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 2,707 Google reviews, listed on Google as “HVAC contractor”.
Based in Chicago, 4 mi away
Ranked #6 because of its Google rating and trade focus: 4.8★ from 2,374 Google reviews, listed on Google as “HVAC contractor”.
Based in Chicago, 15 mi away
Ranked #7 because of its Google rating and review volume: 4.7★ from 27,709 Google reviews, the most in Harwood Heights.
Based in Arlington Heights, 15 mi away
Ranked #8 because of its Google rating and trade focus: 4.7★ from 22,524 Google reviews, listed on Google as “HVAC contractor”.
Based in Chicago, 6 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 1,055 Google reviews, listed on Google as “HVAC contractor”.
Based in Chicago, 5 mi away
Ranked #10 because of its Google rating and trade focus: 4.8★ from 1,189 Google reviews, listed on Google as “HVAC contractor”.
Based in Chicago, 2 mi away
Ranked #11 because of its Google rating and trade focus: 4.8★ from 708 Google reviews, listed on Google as “HVAC contractor”.
Based in Northbrook, 13 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 3,150 Google reviews, listed on Google as “HVAC contractor”.
Based in Evanston, 9 mi away
Ranked #13 because of its Google rating and trade focus: 4.8★ from 2,300 Google reviews, listed on Google as “HVAC contractor”.
Based in Skokie, 6 mi away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 848 Google reviews, listed on Google as “Heating contractor”.
Based in Elmwood Park, 3 mi away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 420 Google reviews, listed on Google as “HVAC contractor”.
Based in Chicago, 3 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 272 Google reviews, listed on Google as “HVAC contractor”.
Based in Park Ridge, 3 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 389 Google reviews, listed on Google as “HVAC contractor”.
Based in Carol Stream, 16 mi away
Ranked #18 because of its Google rating and trade focus: 4.8★ from 7,723 Google reviews, listed on Google as “HVAC contractor”.
Based in Itasca, 12 mi away
Ranked #19 because of its Google rating and trade focus: 4.7★ from 4,969 Google reviews, listed on Google as “HVAC contractor”.
Based in Niles, 3 mi away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 337 Google reviews, listed on Google as “HVAC contractor”.
Based in Franklin Park, 3 mi away
Ranked #21 because of its Google rating and trade focus: 4.8★ from 450 Google reviews, listed on Google as “HVAC contractor”.
Based in Prospect Heights, 10 mi away
Ranked #22 because of its Google rating and trade focus: 4.9★ from 1,120 Google reviews, listed on Google as “Air conditioning repair service”.
Based in Northbrook, 11 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 697 Google reviews, listed on Google as “HVAC contractor”.
Based in Park Ridge, 3 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 161 Google reviews, listed on Google as “HVAC contractor”.
Based in Chicago, 4 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 187 Google reviews, listed on Google as “HVAC contractor”.
#1 to #25 are shown in full above. Here are #28 to #36, in CR Score order; each links to its profile. We publish the top 36 of 1,525 ranked HVAC contractors here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 28 | Intelligent Service: Plumbing, Heating, Cooling & Drain Cleaning | 61 | 4.8★ (1,364) | 10 mi |
| 29 | Leslie Heating, Cooling, Plumbing, & Electric | 61 | 4.8★ (3,089) | 14 mi |
| 36 | Citywide Supply and Service | 61 | 4.7★ (291) | 2 mi |
National price ranges in USD, not adjusted for Harwood Heights. 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 1,525 Harwood Heights 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 Harwood Heights 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 |