HVAC & heating in Round Lake, IL
6 hvac & heating listed in Round Lake, Illinois. 6 with a phone number and 4 with a website.
Round Lake accounts for 0.3% of the hvac & heating listed in Illinois.
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Quick answer
Round Lake, IL has 6 hvac & heating listed on USA Business Search. 6 list a phone number and 4 list a website. The most listings are in ZIP codes 60073.
Updated October 2026Biermann Heating & Air Conditioning
Duane Blanton Plumbing, Sewer, Heating & Cooling
Northeast Cooling, LLC.
FDI Insulation Inc.
R Value Insulation
How to choose an HVAC company in Round Lake
- Ask for a load calculation before you replace a system, not just a size match.
- Compare efficiency ratings (SEER2/AFUE) and available rebates.
- Ask what maintenance plans cost and what they cover.
Check the business: confirm a company's registration with the state in our Illinois business lookup guide, and licensed trades in the contractor license lookup guide.
Common questions
How many hvac & heating are listed in Round Lake, Illinois?
USA Business Search shows 6 hvac & heating in Round Lake. 6 list a phone number and 4 list a website.
Which ZIP codes do these listings cover?
They include ZIP codes 60073.
How do I choose an HVAC company in Round Lake?
Ask for a load calculation before you replace a system, not just a size match. Compare efficiency ratings (SEER2/AFUE) and available rebates. Ask what maintenance plans cost and what they cover. Check the license or registration through the Illinois business lookup guide.
How do I add or fix a listing?
Listings are free. Use Add your business, or the Claim or fix link on any listing.
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