Commercial Heating and Rooftop HVAC Service
For a business, a heating failure is a business problem before it is a mechanical one. Our commercial work is organised around getting the space usable again and keeping the disruption to your operation as small as the job allows.
Tell us what the system is doing when you call — that decides which truck and which parts head to your address.
Rooftop units and packaged equipment
Packaged rooftop units carry most of the retail, office and restaurant space in Chicago and the surrounding suburbs, and their heat sections fail in predictable ways: ignition controls, gas valves, flame rollout and limit switches, cracked heat exchangers, induced-draft motors, belts and bearings, economizer dampers stuck in the wrong position, and control boards.
We diagnose on the roof, confirm the fault, and report what we found with the repair options. Where an economizer or a control problem is making the space uncomfortable while the equipment itself is fine, we say that rather than selling a repair the building does not need.
Unit heaters, make-up air and commercial boilers
Warehouses, shops and back-of-house spaces run on gas unit heaters and infrared equipment. Restaurants and other buildings with heavy exhaust depend on make-up air units, and when make-up air is down the building goes negative — doors get hard to open, exhaust hoods stop pulling properly and the heat that is being produced goes straight out.
Commercial boilers serving radiators, unit ventilators or hydronic loops need the same disciplined approach we take on residential systems, scaled up: low-water cutoffs, feed and return piping, circulators and pumps, zone controls, combustion and safeties.
Controls and building comfort complaints
A large share of commercial heating complaints are control problems, not equipment failures. Thermostats and sensors placed badly, schedules that were never updated after a tenant change, failed relays, zone dampers stuck open or closed, and setpoints fighting each other between adjacent zones all produce spaces that are too hot and too cold at the same time.
We trace the sequence of operation, verify what the controls are actually commanding, and correct the configuration. Fixing controls is usually the cheapest comfort improvement available in a commercial building.
Working around your operating hours
We schedule commercial work around your hours wherever the job allows — early mornings before opening, after close, or on your slowest day. Where a shutdown is unavoidable we tell you upfront how long it will be and what will be affected, so you can plan staffing and communicate with tenants.
For property managers with several buildings, we can consolidate visits and keep the reporting and invoicing straightforward. Preventive maintenance on heat sections, belts, filters, controls and combustion before the heating season is the most reliable way to avoid a mid-winter shutdown.
Replacement planning
Rooftop and commercial heating equipment reaches a point where continuing to repair it is a poor use of a maintenance budget. We plan replacements around your operating calendar and budget cycle: equipment selection, curb adaptation, crane and rigging logistics, gas and electrical work, controls, and the shortest realistic outage.
Where a building has several units of similar age, we help stage the replacements over multiple budget years rather than presenting one unaffordable project.
Where we do this work
We work from 2093 Rand Rd, Des Plaines, IL 60016 and cover Cook and DuPage county communities plus Chicago. Every community is listed on our service areas page, or start with one of these:
Questions we are asked about this service
Do you service rooftop units in Chicago and the suburbs?
Yes. We work on packaged rooftop equipment for retail, office, restaurant and light-industrial buildings throughout Chicago and the surrounding Cook and DuPage county suburbs. For Chicago addresses call 773-250-6060; for the suburbs call 847-550-3322.
Can the work be scheduled outside business hours?
Wherever the job allows, yes — early mornings, after close, or on your slowest day. Tell us your operating hours when you call and we will schedule around them.
Why is one part of our space always cold?
In commercial buildings this is more often a controls or distribution problem than an equipment failure: a stuck zone damper, a sensor in a bad location, an outdated schedule or an economizer bringing in outside air when it should not. We check the controls before recommending equipment.
Do you offer preventive maintenance agreements?
Yes. Scheduled maintenance covers heat sections, combustion, belts, filters, coils and controls, which is the practical way to reduce mid-season failures. We can consolidate visits across multiple properties for management companies.
Related services
Guides worth reading
Every article is on our plumbing and HVAC guides page.
Schedule this service
Call 847-550-3322 for Des Plaines and the suburbs, or 773-250-6060 in Chicago. You can also request service online.