The heating, ventilating and air conditioning equipment that performs the heating and cooling functions indoors is called the HVAC System. The HVAC System is also responsible for providing fresh outdoor air inside. This outdoor air dilutes airborne contaminants that are present inside. If your HVAC system is properly designed, installed and maintained, it will provide a comfortable indoor environment all year long. HVAC Systems can have a very significant impact on the health and comfort of the occupants in a building. Improper ventilation and poor air quality can lead to discomfort and can even have health effects if not dealt with. New HVAC Systems have excellent mechanical and ventilation systems, and older HVAC Systems can be upgraded in order to maximize productivity and energy efficiency, as HVAC Systems account for 40 to 60 per cent of the energy used in commercial and residential buildings.

The ideal HVAC Systems consider all of the interrelated building systems while also addressing issues of indoor air quality, the environment, and energy efficiency. Routine preventative maintenance programs are also necessary for all HVAC Systems, regardless of whether they are new or refurbished. Technicians can perform a complete balancing and tuning of HVAC Systems, adjusting the system so that it performs at a satisfactory level. This is especially essential in commercial and industrial facilities, wherein chemical, radiological, or other hazardous contaminants can be found and must be adequately managed. HVAC Systems are also responsible for pressure control, which can regulate airborne particles, something that is essential in public places such as hospitals and medical facilities. With proper upkeep and maintenance, HVAC Systems provide comfort, cost efficiency, and the maximum operational capacity.