Commercial HVAC appointment setting in Chicago: who to call first

10 things to know before prospecting HVAC in Chicago

1. 01676 nonresidential plumbing and HVAC contractors work the Chicago-Naperville metro (+14 in a year), about the national concentration.
2. 0212.2 larger HVAC-buying buildings per contractor ranks Chicago #25 of 100 markets.
3. 03The biggest buyer group is manufacturing plants: 3,247 sites with 20+ people.
4. 04Chicago-Naperville over-indexes on private K-12 schools at 1.48x the national mix, so build references inside that group.
5. 05Medical and dental office buildings added 956 establishments in a year: new sites without a mechanical contractor relationship.
6. 06Tier 1 is 2,921 sites with 50+ people among manufacturing plants and medical and dental office buildings; those deserve two or three contacts each.
7. 07Cook County, DuPage County and Will County hold 76% of the larger buildings across 12 counties.
8. 08Map the anchor owners first: Northwestern Medicine, University of Illinois Chicago and Chicago O'Hare International Airport run the kind of facilities that use HVAC work.
9. 092 named projects in the metro create HVAC work, starting with Bally’s Chicago Casino & Resort.
10. 10Milwaukee (71 miles) has more larger buildings per contractor, if your crews can cover it.

These are the 10 industries Abstrakt's SDRs call for HVAC work, with how many of each are in the Chicago-Naperville metro and who to ask for. Compared with the U.S. as a whole, Chicago-Naperville leans toward private K-12 schools (1.48x), manufacturing plants (1.38x) and commercial property management firms (1.32x). Build the list around those categories. Colleges and universities and hosting and data processing companies are thinner than the national mix, so treat them as selective targets.

1. 01
   Manufacturing plants3,247

   Ask for: Plant engineer 1,663 with 50+ on site 1.38x U.S. mix +174 in a year
2. 02
   Medical and dental office buildings2,177

   Ask for: Practice administrator or office manager 656 with 50+ on site 1.21x U.S. mix +956 in a year
3. 03
   Senior living and skilled nursing772

   Ask for: Executive director 602 with 50+ on site 0.59x U.S. mix +43 in a year
4. 04
   Commercial property management firms550

   Ask for: Property manager 1.32x U.S. mix +18 in a year
5. 05
   Private K-12 schools431

   Ask for: Business manager 223 with 50+ on site 1.48x U.S. mix +6 in a year
6. 06
   Hotels370

   Ask for: Director of engineering 144 with 50+ on site 0.72x U.S. mix +31 in a year
7. 07
   Warehousing and distribution343

   Ask for: Operations manager 210 with 50+ on site 1.22x U.S. mix +6 in a year
8. 08
   Hosting and data processing companies144

   Ask for: Critical facilities manager 80 with 50+ on site 0.58x U.S. mix +40 in a year
9. 09
   Hospital campuses122

   Ask for: Director of facilities or plant operations 118 with 50+ on site 0.67x U.S. mix +15 in a year
10. 10
    Colleges and universities78

    Ask for: Director of physical plant 67 with 50+ on site 0.50x U.S. mix

Locations are establishments with 20 or more employees (U.S. Census Bureau, County Business Patterns 2023); property management and similar companies are counted in full, whatever their size. Change and concentration: U.S. Bureau of Labor Statistics, Quarterly Census of Employment and Wages, private ownership, 2026 Q1.

676 nonresidential plumbing and HVAC contractors are based in the Chicago-Naperville metro. 14 more opened over the past year, so buyers are fielding new names. The trade is at about the national concentration. 12.2 larger HVAC-buying buildings per contractor puts Chicago 25 of 100 markets. That is more room per contractor than most metros, so systematic prospecting tends to find accounts nobody is working. If you can serve Milwaukee and Grand Rapids, they have more larger buildings per contractor than Chicago.

Tier 1 covers manufacturing plants, medical and dental office buildings and senior living and skilled nursing with 50 or more people on site.

Cook County, DuPage County and Will County hold 76% of the larger HVAC-buying sites across the 12-county metro. The other 9 counties split the remaining 24%, which is where Tier 1 accounts justify the drive and smaller sites do not.

Named, sourced projects in the metro, current as of 2026-07. Each one is a reason to call before the work is awarded.

Health systems, campuses, large employers and industrial parks hold the biggest concentrations of buildings in the metro. Each fact links to its source, checked 2026-10.

• Medical and dental office buildings: 956 more establishments than a year ago

  In this category the usual openings are new clinic openings, practice expansions, comfort complaints from patients and staff. New sites start without a mechanical contractor.

• Manufacturing plants: 174 more establishments than a year ago

  In this category the usual openings are line expansion, new shift, energy audit. New sites start without a mechanical contractor.

• Senior living and skilled nursing: 43 more establishments than a year ago

  In this category the usual openings are ownership change, state inspection findings, summer heat complaints. New sites start without a mechanical contractor.

More questions for every prospect type, and how to follow up after the meeting, are in the HVAC prospecting playbook.

If your crews travel, Milwaukee, South Bend, Grand Rapids and Madison are the closest metros we track. Here are the same counts used above for Chicago.

• Milwaukee, WI

  71 miles away, with 2,070 larger HVAC-buying buildings and 109 nonresidential plumbing and HVAC contractors, or 19.0 buildings per contractor (#1 of 100 markets); the largest buyer group is manufacturing plants, and it over-indexes on senior living and skilled nursing at 1.96x the national mix.

• South Bend, IN

  73 miles away, with 342 larger HVAC-buying buildings and 31 nonresidential plumbing and HVAC contractors, or 11.0 buildings per contractor (#30 of 100 markets); the largest buyer group is manufacturing plants.

• Grand Rapids, MI

  128 miles away, with 1,502 larger HVAC-buying buildings and 84 nonresidential plumbing and HVAC contractors, or 17.9 buildings per contractor (#3 of 100 markets); the largest buyer group is manufacturing plants.

• Madison, WI

  139 miles away, with 698 larger HVAC-buying buildings and 42 nonresidential plumbing and HVAC contractors, or 16.6 buildings per contractor (#5 of 100 markets); the largest buyer group is manufacturing plants, and it over-indexes on senior living and skilled nursing at 1.71x the national mix.

Illinois does not license general contractors at the state level. Roofing, fire sprinkler, and alarm contractors hold state licenses, while general contractor and electrical licensing is local (for example, the City of Chicago).

Confirm current rules with Illinois Department of Financial and Professional Regulation (IDFPR); Office of the Illinois State Fire Marshal.