The traditional split system, with an outdoor and indoor component, is still the most popular residential air conditioning system today. A C wire, or a common cable, carries low voltage (24 V) power from the heating system to the thermostat. Most modern heating and cooling systems have C-wires, which ensures compatibility for the installation of all smart thermostats. Roof units are a type of air conditioning equipment that is installed on the roof of a building.
They are commonly found in commercial buildings, but can also be used in residential buildings to heat and cool large spaces, such as offices or warehouses. Roof units can be air-cooled or water-cooled systems. Air-cooled systems have a condenser located inside an attic or outside the roof of the building. The air inside the building passes over these coils and cools down before returning to the space being conditioned.
Water-cooled systems draw fresh air from an external source through their condensers and then flow through coils where it cools down before being pumped back to the building through an expansion coil or evaporative cooler. The C wire, or “common cable”, allows for a continuous flow of 24 VAC power to the thermostat. These five HVAC machines are the most common commercial HVAC equipment found in all types of buildings: split systems, C wires, roof units, air-cooled systems, and water-cooled systems. Split systems are the most popular type of residential air conditioning system today. They consist of two components: an outdoor unit and an indoor unit. The outdoor unit contains a compressor and condenser coil, while the indoor unit contains an evaporator coil and fan.
The C wire, or common cable, carries low voltage (24 V) power from the heating system to the thermostat. This ensures compatibility for the installation of all smart thermostats. Roof units are another type of air conditioning equipment that is installed on the roof of a building. They are commonly found in commercial buildings but can also be used in residential buildings to heat and cool large spaces such as offices or warehouses. Roof units can be either air-cooled or water-cooled systems. Air-cooled systems have a condenser located inside an attic or outside the roof of the building.
Water-cooled systems draw fresh air from an external source through their condensers and then flow through coils where it cools down before being pumped back to the building through an expansion coil or evaporative cooler. These five HVAC machines are essential for keeping buildings comfortable year round. Split systems, C wires, roof units, air-cooled systems, and water-cooled systems are all important components of any HVAC system.
