Heating, cooling and air conditioning (HVAC) systems can be described as technology for the indoor environments that enhances comfort for the occupants. The main aim of the HVAC systems is to ensure that the occupants of a given indoor space are comfortable by having a good supply of quality air as well as ensuring that the temperatures are optimum without being too cold or too hot. The design of the HVAC systems is based on various principles in disciplines such as thermodynamics, heat transfer as well as fluid mechanics. This heating and cooling systems are used in areas where conditions for safe and healthy living are regulated through the use of fresh air from the outdoor environment. Family homes, hotels, apartments, office and industrial buildings, hospitals as well as ships and the submarines are the various places that can use the HVAC systems for a comfortable living.
Ventilation is one of the process enhanced through the HVAC system where the indoor air is replaced with the outdoor air to enhance good quality of the indoor air. The air quality is enhanced through temperature control through cooling, replenishment of oxygen as well as removing dust, smoke, moisture, odours, airborne bacteria, carbon dioxide among other substances and gases. Other than exchanging the indoor and outdoor air, the HVAC system which is a mechanical form of ventilation ensures that air is circulated evenly within the room to ensure uniform good air quality. The mechanical form of air ventilation is used as a backup as well as to supplement the natural ventilation methods such as the opened windows, trickle vents and the louvers. Through proper ventilation, a building is cooled releasing excessive heat.
When the temperatures are very low in the outdoor environment, the indoor environment is also affected making the living conditions uncomfortable and unbearable. Heating can be done through appliances that have designed to generate heat into a building commonly referred to as heaters. Furnace, boiler, heat pumps that heat water, steam, furnace rooms and electricity are some of the sources of heat for heating the indoor environment where once heat is generated, it is distributed throughout the building through various processes including radiation, convection and conduction.
Fuels used by the various sources of heat can produced hazardous by-products due to incomplete combustion as a result of reduced oxygen such as carbon monoxide which are a health hazard to the occupants in case inhaled. In a building when in need of heating and cooling apparatus, one needs to get professional service provider. For safe installation, the professionals have the knowledge and skills as well as the right tools and equipment to do the installation.