Commercial HVAC & Refrigeration FAQ
Why is my rooftop unit (RTU) not cooling?
Common causes include dirty condenser coils, failed fan motors, clogged filters, low refrigerant, or stuck economizers. RTUs in DFW often struggle during extreme heat due to high rooftop temperatures and heavy run times.
Why is my walk‑in cooler or freezer warming up?
This is usually caused by dirty condenser coils, iced evaporator coils, failed fans, refrigerant issues, or blocked airflow from overloaded shelving. Door gasket leaks are also common in high‑traffic kitchens.
Why does my ice machine stop making ice?
Ice machines shut down when they overheat, lose water flow, or develop scale buildup. In DFW kitchens, poor ventilation and hard water are the most common causes of ice machine failure.
Why is my commercial HVAC system short‑cycling?
Short‑cycling can be caused by dirty filters, oversized equipment, thermostat issues, low refrigerant, or overheating components. This problem increases energy costs and reduces equipment lifespan.
Why is my cooler or freezer icing up?
Ice buildup typically indicates airflow restrictions, failed defrost cycles, door gasket leaks, or evaporator fan issues. Excess humidity in DFW kitchens accelerates icing problems.
Why is my building experiencing uneven cooling or hot spots?
Blocked vents, disconnected ductwork, failing VAV boxes, stuck dampers, or RTU airflow issues can cause uneven temperatures. Multi‑tenant buildings in DFW often experience this due to aging duct systems.
Why is my commercial HVAC system making loud noises?
Grinding, rattling, or buzzing sounds may indicate failing motors, loose belts, damaged bearings, or debris in the condenser fan. Loud noises should be addressed immediately to prevent major failures.
Why is my walk‑in cooler leaking water?
Water leaks are commonly caused by clogged drain lines, iced evaporator coils, or damaged door gaskets. High humidity in North Texas makes drain clogs especially common.
How often should commercial HVAC and refrigeration equipment be serviced?
Most DFW businesses benefit from quarterly maintenance for HVAC and refrigeration systems. High‑use environments like restaurants may require monthly coil cleaning and filter changes.
Why does my RTU smell like burning or chemicals?
Burning smells may indicate electrical issues, overheated motors, or belt failure. Chemical smells may indicate refrigerant leaks. Shut the system down and call a licensed technician immediately.
Why is my cooler or freezer running constantly?
This can be caused by dirty coils, refrigerant issues, poor insulation, door gasket leaks, or high ambient temperatures. Continuous run time increases energy costs and shortens equipment life.
Why is my commercial thermostat or BAS not responding?
Power issues, locked settings, failed sensors, or communication errors can cause BAS or thermostat failures. Power outages in DFW often reset schedules or override settings.
What temperature should my walk‑in cooler or freezer be set to?
- Walk‑in coolers: 34–38°F
- Walk‑in freezers: –5 to 0°F Incorrect setpoints can cause icing, product loss, and compressor strain.
When should I call for emergency service?
Call immediately if you notice:
- Rapid temperature rise in coolers/freezers
- Repeated breaker trips
- Burning smells
- Heavy ice buildup
- No cooling during business hours
- Water leaks into occupied spaces
Call today for 24/7 emergency service!
We provide commercial HVAC and refrigeration service across the Dallas–Fort Worth Metroplex and beyond, including Dallas, Fort Worth, Arlington, Irving, Grand Prairie, Mesquite, Garland, Richardson, Plano, Frisco, McKinney, Denton, Carrollton, Lewisville, Hurst, Euless, Bedford, Mansfield, Burleson, Keller, Southlake, Grapevine, Coppell, Allen, and surrounding North Texas areas. Whether you need rooftop unit repair in Dallas, walk‑in cooler service in Fort Worth, ice machine repair in Arlington, commercial refrigeration troubleshooting in Irving, or emergency HVAC repair near me anywhere in DFW, our licensed technicians are ready to keep your business running smoothly.