HVAC controls systems are used to maintain the desired temperature inside a building. The goal is to keep occupants comfortable and the system operating at a maximum efficiency. The system uses a series of operations, also known as a logic statement, to automatically control the heating and cooling functions of a building. A logic statement is a series of commands that are automatically carried out by an HVAC system based on data inputted by a user.

In order to operate an HVAC system properly, it must meet specific requirements and specifications. The equipment used must comply with local and state codes. It should also meet the building codes of the building. In most cases, a building permit and a code compliance inspection are required for HVAC installations. Homeowners can often perform simple tasks like filter changes themselves, but larger projects require a licensed contractor.

Two types of HVAC systems are available: ductless and packaged. The former requires less space than the latter and is generally installed at the highest point of a building. The former offers better control of temperature within a structure than the latter. They are particularly appropriate for hotels and other venues. A packaged system consists of a condenser, evaporator, and compressor. The latter is typically installed on a house’s foundation and fulfills the cooling and heating needs of the building.

HVAC is an integral part of buildings, from single family homes to large office buildings. It controls temperature and humidity and makes the indoor environment comfortable. It also helps maintain the freshness of the air by using outdoor air.