HVAC Controls, VFD and VAV Service in Dallas-Fort Worth
Good equipment still performs badly when the controls are wrong. Hot and cold spots, short cycling and high energy use often trace back to VAV boxes, variable frequency drives or control settings. Brico Mechanical LLC services the controls that make commercial HVAC systems work as designed.

Controls services
- VAV boxes: diagnostics and repair for variable air volume terminal units
- VFDs: variable frequency drive service for fans and pumps
- AAON equipment: service for AAON systems and their controls
- System controls: troubleshooting of HVAC control sequences and components
Problems controls service can solve
- Rooms that are too hot or too cold while others are comfortable
- Fans or pumps that run at the wrong speed
- Equipment that cycles on and off too often
- Alarms and faults that keep coming back
- Energy use that is higher than it should be
Why VFDs and VAVs matter
VFDs let motors run only as fast as the load requires, which saves energy and reduces wear. VAV boxes deliver the right amount of air to each zone. When either fails, comfort drops and the rest of the system works harder to compensate. A fast fix keeps the whole system in balance.
Service for AAON equipment
AAON equipment is common in commercial buildings. Our team services AAON units and the controls that run them, along with the other rooftop and air handling equipment in your building. See our RTU and commercial AC page for related work.
Controls FAQs
A VAV, or variable air volume, box controls how much conditioned air reaches a zone in a building. It helps keep each area at the right temperature.
A variable frequency drive adjusts the speed of a motor, such as a fan or pump, to match demand. This reduces energy use and wear on equipment.
Yes. AAON systems and controls are part of our regular service work.
Get controls help for your facility
Call 972-777-3776 or request service. Tell us about the comfort or control problem you are seeing.
