Commercial HVAC · Southeast Wisconsin
Commercial HVAC that keeps your doors open
From rooftop units to boiler rooms, Sutton Mechanical helps Sussex-area businesses avoid costly downtime with experienced service and honest recommendations.
24-Hour Emergency Service · Office Mon–Fri 7 AM – 4 PM
Commercial HVAC services
Rooftop Units (RTUs)
New RTU installation, diagnostics, repair, and seasonal service for packaged rooftop heating and cooling equipment.
Unit Heaters
Install, repair, and service for gas-fired unit heaters in shops, warehouses, garages, and loading areas.
Commercial Boilers
Boiler service, repair, and hydronic heating systems kept ready for Wisconsin winters.
Exhaust Fans & Make-Up Air
Exhaust, make-up air, and ventilation systems that keep your space comfortable, balanced, and safe.
Ductless Mini-Splits
Targeted heating and cooling for offices, server rooms, additions, and spaces your main system can't reach.
Controls & Thermostats
Thermostats, scheduling, and controls set up so your equipment runs when you need it and saves when you don't.
Service Agreements
Scheduled preventive maintenance to reduce breakdowns, extend equipment life, and plan repairs before they become emergencies.
Diagnostics & Repair
24+ years of troubleshooting means finding the real problem fast and getting your building back up and running.
24-Hour Emergency Service
No heat or no cooling after hours? Call or text any time and get help when your business needs it.
Any brand, any application
We work on the equipment you already have
Every building is different. Instead of pushing one manufacturer, we service and repair the brands already on your roof and in your mechanical room, and when it's time to replace, we recommend equipment based on your building and how you use it.
Businesses we serve
Why a service agreement pays off
Equipment that's cleaned, checked, and tested on schedule breaks down less, runs more efficiently, and gives you time to plan for repairs instead of reacting to emergencies.
- Scheduled seasonal inspections
- Filter changes, cleaning, and testing
- Early warning on parts that are wearing out
- A single local contact who knows your building
Talk to us about your building.
Call or text the owner directly. Straight answers, honest recommendations. 24-hour emergency service available.