Heating, ventilation and air conditioning systems, also known as HVAC systems, provide heating and cooling to residential and commercial buildings. HVAC systems can be found in almost all indoor climate situations and are used as a means to maintain a healthy and pleasant environment. In manufacturing, HVAC can be a key part of various manufacturing processes as well as health and safety. HVAC systems are becoming increasingly popular in new construction projects around the world. This is in part driven by increased legal requirements regarding ventilation. Ventilation in the HVAC system involves the removal of moisture, heat, odors, smoke, dust, airborne bacteria, carbon dioxide, and other gases as well as temperature control and oxygen replenishment.