Air Conditioning Terminology


  • Ton of Cooling “Tonnage”- Capacities of air conditioners are rated in tons of cooling. 1 ton of cooling is equivalent to 12,000 BTU’s. Example 3 tons = 36,000 BTU’s

 

  • SEER - This term is used to identify the efficiency of the unit. It stands for Seasonal Energy Efficiency Ratio. The higher the number the more efficient the unit. Seer ratings range from 13 to 19 on new air conditioning / heating equipment. Seer ratings range from 12 down to 7 or lower on existing air conditioning / heating equipment.

 

  • Split System - An air conditioning setup that is comprised of an evaporator coil installed on an air handler or furnace and a condensing unit located outside. These components are connected with copper piping in which refrigerant flows. The split system is the most common for newer residential air conditioning in Phoenix, Arizona.

 

  • Packaged Unit -This is a air conditioning & heating system that is contained all in one cabinet usually located on the roof but can also be installed on the ground. The packaged unit is the most common type of air conditioning in Phoenix Arizona homes 10 years or older.

 

  • Mini Split - is a smaller split air conditioning system used to cool 1 or 2 rooms. The mini split air conditioning uses no duct work and is usually wall mounted but can be ceiling mounted also. Not a commonly used type of air conditioning in Phoenix Arizona.

 

  • Condenser – This is the part of the air conditioning system that is located outside on the ground. It contains the condensing coil, compressor and some electrical controls. Condensers for air conditioning in Phoenix Arizona will need to be replaced more often than the evaporator section.

 

  • Evaporator – This is the coil that is installed in your attic, closet or garage. It is normally placed on the discharge side of the blower assembly. This part is connected to the furnace for heating applications.

 

  • Refrigerant – The gas that is used to carry the heat from in your home to the outside.

 

  • R22 – The most common refrigerant used in today’s air conditioning systems. It is an HCFC (Hydrochlorofluorocarbon) refrigerant.

 

  • 410A – The recently developed replacement refrigerant for R22. R22 is scheduled for complete phase out in 2030 It is not mandatory to buy a 410 system at this time but it is a option. R22 will be around for a long time.