United CoolAir Corporation is expanding their broad line of portable a/c and heating units to include a Portable Compact Trailer. This new US DOT Rated compact trailer is 20% smaller than their original system and includes features like a 2” tubular frame, dual axle wheels, hydraulic brakes and two leveling jacks. Air conditioner capacities are 20, 25 and 30 tons using R-410a refrigerant. There are three 20” duct collars for supply and return air and includes a standard ESP of 1.5”. A VFD option and drive package for up to 3” ESP is also available and contact the factory for that and other configurations. Dual refrigerant circuits are provided for reliability along with a unit-mounted circuit breaker. Available options include Camlock Power Connections, electric heat up to 60kW, low ambient operation and remote thermostat.