Commercial heating and cooling in Chicago Heights
When a shop, office or restaurant is too cold or too hot, customers leave and staff lose focus. Mountain Top services commercial heating, cooling and boilers in Chicago Heights and the South Suburbs.
We work on commercial properties as well as homes, including boiler installation for commercial buildings. We offer a 1-hour emergency response, 24/7, when a breakdown cannot wait.
Why customers choose us for commercial HVAC work
A system that is down usually costs a business more than the repair itself. We will find out what is wrong, explain what it takes to fix it and let you decide how to proceed. Our licensed, bonded and insured technicians handle commercial repairs, installations and maintenance so your equipment keeps doing its job.

What our commercial HVAC service includes
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Commercial heating
Repair and installation for commercial heating systems.
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Commercial cooling
Repair and installation for commercial air conditioning.
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Commercial boilers
Boiler installation and repair for commercial buildings.
- 04
Maintenance
Tune-ups that help equipment get through the season.
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Emergency service
We offer a 1-hour emergency response, 24/7.
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Clear explanations
What is wrong and what it takes to fix it, before any work begins.
Things worth thinking about
Do not wait for peak season
Heating and cooling equipment fails when it is working hardest. A check before the season costs less than downtime during it.
Track what keeps breaking
Frequent repairs on the same equipment are a sign to compare repair against replacement.
Tell us how the space is used
Hours, foot traffic and equipment loads all affect what your system needs.
Four steps from first call to finished job
Every job follows the same four steps, whether it is a furnace repair or a new boiler.
- 01
Call or text
Tell us what is going on, by phone or by text.
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We find the cause
A licensed technician diagnoses the problem before recommending anything.
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You get the full picture
What is wrong, what it takes to fix and what your options are. The decision is yours.
- 04
We do the work
Repair or installation by a licensed, bonded and insured crew.
Commercial FAQ
Serving Chicago Heights and the South Suburbs. Not seeing your question? Call or text 708-407-6296.
Do you service commercial properties?
Yes. We work on residential and commercial properties across Chicago Heights and the South Suburbs.
Do you install commercial boilers?
Yes. Boiler installation for commercial buildings is part of what we do.
Do you offer emergency service for businesses?
Yes. We offer a 1-hour emergency response, 24/7. Call or text 708-407-6296.
Related services
Ready to get started?
Tell us what is going on with your commercial HVAC and we will take it from there.