The most important component of virtually every system in the HVAC industry is the fan impeller. It has a large effect on energy consumption, acoustics and efficiency of the entire air conditioning system. No matter if you require a plug or plenum fan, an un-housed fan or a fan with a scroll housing, using EC or AC motors in 50 or 60 Hz, constructed of aluminum, carbon steel or other alloy – the fan wheel solution from punker will always result in the optimal ventilation solution for your HVAC application.