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HVAC for office buildings in Las Colinas and Irving.

Rooftop units, VAV systems, IT-room cooling, garage ventilation — the equipment that keeps tenants comfortable and complaints off the property manager's desk.

Tenant floors

"Too cold here, too hot there."

The most common complaint in an office building, and usually not the rooftop unit's fault. Most multi-tenant floors are served by VAV boxes above the ceiling — each one a damper, a controller, often a reheat coil — and a thermostat on the wall.

Stuck or failed dampers
The box can't open or close, so one room gets all the air or none of it.
Sensors and thermostats
Moved, covered, or reading the wrong room after a remodel.
Layouts that changed
Offices built where there used to be open plan, with no rebalancing afterwards.
Reheat that doesn't
Perimeter rooms that stay cold on winter mornings.
A technician on a ladder with a ceiling tile removed, working on a VAV box and its controller above an office
A VAV box above an office ceiling.
A row of packaged rooftop units and exhaust fans on the roof of a mid-rise office building under a clear Texas sky
The roof of a mid-rise office building.
The roof

Rooftop units, exhaust, and what's around them.

Most low- and mid-rise offices here are cooled and heated by packaged rooftop units. We maintain and repair them — coils, belts, economizers, drains, electrical, refrigerant — and replace them with crane lifts planned for early mornings and weekends.

Larger buildings with central plants are different. Chillers and cooling towers are specialised work: tell us what your building has and we'll say plainly what we take on and what we don't.

Below ground

Garages and mechanical rooms.

Parking garages are ventilated by large fans, in many buildings switched by gas-detection controls. Fans and belts wear out quietly, and controls that never call for the fans go unnoticed until someone complains about the air.

  • Garage exhaust and supply fans: motors, belts, bearings.
  • Whether the fans actually respond to their controls.
  • Mechanical-room equipment within our scope, and a clear answer about what isn't.

Gas-detection sensors themselves are life-safety devices, often maintained by a specialist; we check that the ventilation responds and tell you if it doesn't.

A large ventilation fan mounted high on the wall of a concrete parking garage, lit by fluorescent light
Garage ventilation.
A small office IT room with network racks and a wall-mounted split-system indoor unit above them
An IT room with its own cooling.
The room that can't wait

IT and server rooms.

Cooling that has to run nights, weekends and holidays shouldn't depend on the building's schedule. We install and maintain dedicated split systems for IT rooms, check their drains and alarms, and make sure somebody gets told when one stops.

Landlord or tenant?

In many office leases, some systems belong to the landlord and some — supplemental units, IT-room cooling, tenant-installed equipment — to the tenant. We don't interpret leases, but we'll list what serves your space so the right party can decide.

Tell us about the building.

One call for the roof, the floors and the garage.

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