Required: HVAC Unitary skills: split system - all brands up to 120 tons, mini-split system – up to 3 tons heat pump and all brands Multi-Zone, VRV Heat Pump and VRV Heat Recovery, roof top units – all brands up to 150+ tons, water source heat pumps – all brands up to 120 tons, self-contained systems – water-cooled and air cooled with remote condenser and CRAC units – Leibert/data-aire/Stultz. Diagnose HVAC system performance through observation, testing, and setup based on trade/position and equipment type/size: Split systems up to 120 tons, mini split systems, 3 tons/multizone.