About Central Air Conditioning Systems
A residential split system central air conditioning system keeps your entire home cool in the warmer months, while it helps lower indoor humidity levels. System elements include a compressor, a fan, condenser coil, evaporator coil, and a refrigerant. The unit extracts heat from indoor air and transfers it outside, leaving the cooled indoor air to be re-circulated. The efficiency of central air conditioning systems is shown using SEER ratios.
Three elements make up a central air conditioning system with electricity as its power source. They are:
- An outdoor section (the condensing unit).
- A matching indoor gas or oil furnace with coil, or air handler.
- Ductwork to transfer the cooled air throughout the home.
A residential furnace keeps your home warm during the cold months, and can be an integral part of a central air conditioning and/or indoor air quality system. The basic components of a furnace system are:
- A burner, through which gas (natural or propane) or oil is delivered and burned.
- A heat exchanger, where the heat produced from the burning gas is transferred to the air distribution system.
- Ductwork to transfer the heated air throughout the home.
- A flue or vent pipe, to exhaust byproducts of combustion (such as water vapor and carbon dioxide) to the outside.