HVAC (Heating, Ventilation, and Air Conditioning) systems are designed to control and maintain the temperature, humidity, and air quality within a building. These systems are crucial for creating a comfortable and healthy indoor environment in residential, commercial, and industrial settings.

Heating: HVAC systems provide heating during colder months using various methods such as furnaces, boilers, heat pumps, or electric heaters. They distribute heated air or water throughout the building to raise the indoor temperature.

Ventilation: HVAC systems ensure proper air circulation by exchanging stale indoor air with fresh outdoor air. Ventilation removes odors, pollutants, and excess moisture, improving indoor air quality. It also helps control humidity levels, preventing the growth of mold and mildew.

Air Conditioning: HVAC systems provide cooling during hot weather by removing heat from indoor air. This is typically achieved through refrigeration cycles, where air is cooled and dehumidified by passing over evaporator coils. The conditioned air is then distributed back into the building, maintaining a comfortable temperature.