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Rooftop UnitsSeptember 8, 20255 min read
Understanding Rooftop HVAC Units (RTUs)
A guide for commercial building owners and property managers on packaged rooftop HVAC units, economizers, and maintenance needs.
Commercial buildings throughout Troy, Sterling Heights, Warren, and Oakland/Macomb counties commonly rely on packaged rooftop units (RTUs) for heating and cooling.
What Makes RTUs Unique Unlike split residential systems with an indoor furnace and outdoor condenser, a rooftop unit houses all heating, cooling, fan, and control components in a single weatherproof cabinet mounted on a roof curb. This saves interior floor space and keeps mechanical noise outside tenant areas.
The Importance of the Economizer Most modern commercial rooftop units feature an economizer assembly. When outdoor temperatures and humidity are favorable (such as cool spring or autumn mornings), motorized dampers modulate to pull in fresh outdoor air for "free cooling," reducing wear on the compressors.
Routine Rooftop Maintenance Because rooftop units are exposed to direct sunlight, snow, high winds, and roof grit, regular inspections are vital: - Blower belt tension and alignment - Burner and heat exchanger integrity for winter safety - Filter changes tailored to commercial air volumes - Electrical contactor inspection to prevent compressor motor burnout
A1 Precision Heating and Cooling brings 38 years of HVAC industry experience to commercial rooftop unit inspections and service.
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A1 Precision Heating and Cooling provides expert diagnostics across Macomb and Oakland Counties:
Need Professional HVAC Help?
Contact Tom Matti and A1 Precision Heating and Cooling. 38 years of HVAC industry experience serving Metro Detroit.