Commercial HVAC Rooftop Unit Services in Houston

Since 1976, Douglas Mechanical Inc. has provided Houston and the surrounding areas with commercial HVAC rooftop unit maintenance & commercial HVAC services. HVAC rooftop units are our specialty!

Rooftop units or RTUs are in all shapes and sizes.  Capacities range from 1-1/2-tons to over 25-tons.  Power sources range from 230Volt single phase to 460Volt three-phase.  Refrigerant bases are R22 to 410A.  And heat sources can be electric, propane, or gas.  The HVAC technicians at Douglas Mechanical, Inc. are trained and experienced in  commercial HVAC services and repairs for all types, makes, and models. We also do commercial HVAC rooftop unit installation all over the city of Houston.

• From simple filter changes to changing and adjusting belts and greasing bearings to chemically cleaning coils, let us help with commercial HVAC services or preventive maintenance.
• When it comes to replacement, we have options to possibly utilize your existing curb or choose the unit best for your application and employ a curb adapter. Keep your building pressurized with motorized outside air dampers, protect your exterior coils with hail guards, and protect your ductwork and space from water damage with condensate float switches.