equipment for the simultaneous control of air temperature, relative
humidity, purity, and motion.
Uses a fan
to discharge heat from the condenser coil to the outdoors.
unit located in the house that provides hot and cold air. It is
usually located in the attic, closet or garage. The heating element is
located in the air handler.
Thermal Unit. The amount of energy needed to change the temperature of
one pound of water by one degree Fahrenheit. In practical terms, it
represents a unit of measure of heat extracted from your home for
Central Air Conditioner System: System in which air is
treated at a central location and carried to and from the rooms by one
or more fans and a system of ducts.
Compressor: The pump that moves the refrigerant from the
indoor evaporator to the outdoor condenser and back to the evaporator
again. The compressor is often called "the heart of the system"
because it circulates the refrigerant through the loop.
unit of your air conditioning system. This is located on the ground or
on a roof. It consists of compressor, condenser and a fan.
A series or
network of tubes filled with refrigerant, normally located outside the
home, that removes heat from the hot, gaseous refrigerant so that the
refrigerant becomes liquid again.
or producing ability of a unit to remove heat from an enclosed space.
of Performance of a heat pump means the ratio of the rate of useful
heat output delivered by the complete heat pump unit (exclusive of
supplementary heating) to the corresponding rate of energy input, in
consistent units and under operating conditions.
Damper: A movable plate that opens and closes to control air
EER: Energy Efficiency Ratio means the ratio of the cooling
capacity of the air conditioner in British Thermal Units per hour, to
the total electrical input in watts under ARI-specified test
A series or
network of tubes filled with refrigerant located inside the home that
take heat and moisture out of indoor air as liquid refrigerant
Flexible duct tubing that comes in various sizes.
Heat Pump: An air conditioner capable of heating by
refrigeration. It may or may not include a capability for cooling.
Outside air or water is used as a heat source or heat sink, depending
upon whether the system is heating or cooling.
A measure of
the ability of a unit to add heat to an enclosed space.
Seasonal Performance Factor means the total heating output of a heat
pump in British Thermal Units during its normal usage period for
heating divided by the total electrical energy input in watt-hours
during the same period.
that controls the air conditioning system by monitoring humidity
This is the
wire that runs from the thermostat and controls your air conditioning
Energy Efficiency Ratio means the total cooling output of a central
air conditioner in British thermal units during its normal usage
period for cooling divided by the total electrical energy input in
watt-hours during the same period as determined using the ARI-specified
test procedure. This rating is only for units with cooling capacity
less than 65,000 Btu/hr. The higher the SEER, the more efficient the
unit. The more efficient the unit, the lower the operating cost.
air conditioner which combines both condenser and air handling
capabilities in a single packaged unit. Found commonly on manufactured
Return boxes that are affixed to the air handler for distribution of
Refrigerant: This is the real name for what people call
freon. It is the fluid and gas that evaporates and condenses
throughout your system, absorbing heat in the evaporator coil and then
releasing heat to the outside with the condenser coil.
Split System: The most common residential system in the
country. The system usually consists of an air handler (usually
located in the attic, a closet or in an attached garage), a condenser
which contains the compressor located outside the building and they
are both connected with copper.
coils located in the air handler that can be energized to provide
Thermostat: A thermostat consists of a sensors and relays
that monitor and control the functions of a heating and cooling
Ton: The unit of measurement for air conditioning system
capacity. One ton of air conditioning removes 12,000 Btu's of heat
energy per hour from a home. Central air conditioners are sized in
tons. Residential units usually range from 1 to 5 tons.
Zoning: A method of dividing a home into different comfort
zones so each zone can be independently controlled depending on use