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Air Conditioner
- Outdoor unit that cools
the hottest days with reliability you can
count on, Year after Year.
Air Conditioning
Control of temperature, humidity, air movement,
and cleaning of air in a confined space.
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Air Handler
- Indoor
unit that works with an air conditioner or
heat pump to circulate conditioned air in
home that use electricity instead of gas.
Variable speed models increase efficiency.
Amperage
Electron or current
flow past a given point in a circuit.
ARI
The Air Conditioning and Refrigeration Institute
is an organization created by HVAC manufacturers
to ensure an acceptable level of quality within
the industry. ARI is a voluntary, nonprofit
organization which publishes ratings standards
and benchmarks for testing cooling and heating
products.
Brazing
Method of joining
metals with nonfrerrous (without iron) filler
using heat between 800deg. and melting point of
base metals.
BTU
Short for British Thermal Unit. The amount of
heat required to raise or lower the temperature
of one pound of water by one degree Fahrenheit.
BTUH
The heat transfer rate of HVAC equipment is
measured in British Thermal Units per Hour.
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Capacitor
Electrical
storage device used to start and run circuits on
many electric motors.
Capacity
Usually measured in BTUs or tons, capacity
refers to an air conditioning or heating unit 's
ability to cool or heat a space. For instance, a
20-ton air conditioning unit has twice the
capacity of a 10-ton unit.
Central Air
Conditioning
A system capable of
providing heating, cooling, humidifying and
dehumidifying.
CFM
A unit to express movement of volume, including
air in Cubic Feet per Minute. A 400 CFM air
handler moves 400 cubic feet in one minute.
Charge
Amount of refrigerant
placed in a refrigerating unit.
Code
Installation
Air Conditioning
installation that conforms to the applicable
codes.
Compressor
The compressor plays an integral role in cooling
your home. It is the device responsible for
pumping refrigerant through the refrigerant
lines and the coil, making the transfer of heat
from inside your house to the outdoors possible.
Condensate
A fluid formed when
a gas is cooled to its liquid state.
Condenser
The coil responsible for dissipating heat to the
surrounding, outside air. Also called the
condenser coil, or outdoor coil, its role is
reversed when a heat pump is used in heating
mode.
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Control
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Easy-to-use, Easy-to-read,
attractively designed thermostats that
maximize temperature control.
dB
The relative loudness of a sound is expressed in
dB, short for decibel. As an example, the sound
of a human voice talking is around 70 dB. (See
also SRN.)
Diagnostics
The process of
identifying or determining the nature and
circumstances of an existing condition.
Downflow
A term used to describe the direction of airflow
through a furnace. A downflow furnace takes
return air from the top, heats it, and then
delivers the warm air from the bottom.
Duct/Ductwork/Ducting
A central heating and air conditioning system
uses many components to heat or cool air. This
warm or cool air is then transferred to
different registers throughout the house via
special, flexible, large-diameter pipes or
ducts. The system of ducts throughout your house
is often referred to as ductwork or ducting.
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EER
Energy Efficiency Ratio. The ratio of the
cooling capacity of the air conditioner in BTUs
per hour to the total electrical input in watts.
This measure is determined by comparing test
units to ARI specifications.
Efficiency
A general term used to describe how effectively
a heat pump, air conditioning system, or furnace
converts energy in to energy out. The higher the
number, the more efficient the unit, and the
lower the operating costs.
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Efficiency Ratio
- SEER
(Seasonal Energy Efficiency Ration)
and HSPF
(Heating Seasonal Performance Factor)
are measure of efficiency for heat
pumps. SEER and HSPF rating, the more money
you save. All American Standard systems
satisfy or exceed minimum government SEER
and HSPF standards.
click here for annual savings
Evaporator Coil/Evaporator
An integral part of the indoor unit of a heat
pump or air conditioning system. So called
because when warm air passes over a coil filled
with liquid refrigerant, the refrigerant itself
evaporates and absorbs some of the heat. This
gas refrigerant is then pumped to the outdoor
coil, where it releases heat into the
surrounding air and returns to its liquid state.
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Furnace
- Indoor
unit that uses gas to heat your home in the
winter
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- Head
Pressure
Pressure that exists in
condensing side of refrigerating systems.
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- Heat
Pump
- Outdoor
unit that warms your home in the winter and
cools your home in the summer with quiet,
reliable efficiency.
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- High Efficiency Fan
Motor
- Delivers exceptional
airflow and efficiency.
High Side
The part of a
refrigerating system subject to the condenser
pressure.
Horizontal Flow
A term used to describe the direction of airflow
through a furnace. A horizontal flow furnace
takes return air from one side, heats it, and
then delivers the warm air from the other side.
HSPF
Heating Seasonal Performance Factor. It measures
the efficiency of the heating portion of your
heat pump. The Department of Energy minimum is
6.8. (Similar to SEER.)
Humidifier
Usually available as an optional accessory, a
humidifier is used to inject water vapor into
the dry, heated air expelled from a furnace/air
handler. The benefits can be improved efficiency
and a more comfortable living environment.
Humidity
Moisture. Dampness in
the air.
HVAC
Heating, Ventilating and Air Conditioning. Used
to refer to the industry at large, particularly
dealers of heating and air conditioning
equipment.
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Kilowatt
A unit used to express 1,000 Watts. Denoted as
"kW." Note that the "W" in "kW" is always
capitalized because the Watt unit was named
after a person.
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Liquid Line
Tube that
carries liquid refrigerant from the
condenser or liquid receiver to the
refrigerant control mechanism.
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- Low
Side
The parts of the
refrigerating system subject to the
evaporator pressure
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Multispeed Fan Motor
- Works
quietly and efficiently to circulate
conditioned air throughout your home.
Package Unit
Equipment in which all heating and cooling
components are located in one cabinet. Installed
either beside or on top of a home or business.
Reclaiming
Taking refrigerant
that has been removed from a system and
processing it in accordance with EPA rules.
Refrigerant
The liquid used to absorb and transfer heat from
one part of the home comfort system to another.
Refrigerant Lines
Copper lines used to transfer the refrigerant
between the outdoor unit and the indoor unit.
Reverse
Valve
Device used to reverse
direction of the refrigerant flow, depending
upon wheather heating or cooling is desired.
SEER
Seasonal Energy Efficiency Rating. Used to
express the efficiency of an air conditioning
unit, or a heat pump in cooling mode. The higher
the SEER rating, the more efficient the unit.
The Department of Energy minimum is 10 SEER.
click here for annual savings
Split System
A home comfort system that uses an indoor and an
outdoor component to deliver comfortable air to
a living environment.
Thermostat
A temperature-measuring device used to control
the operation of home comfort systems to
maintain a comfortable temperature within the
house. Programmable thermostats allow you to
program different temperatures for different
times of the day.
Ton
The ton ratings you see here have nothing to do
with the weight of the unit. In fact a ton is
simply 12,000 BTUs (see BTU definition on this
page). A typical home cooling/heating system
uses heat pumps or air conditioners with a
capacity of between 1.5 and 5 tons.
- Two
~ Step Single Duration Compressor
- Provides
two stages of cooling for a higher level of
efficiency that most single-compressor
units.
Upflow
A term used to describe the direction of airflow
through a furnace. An upflow furnace takes
return air from the bottom, heats it, and then
delivers the warm air from the top.
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Variable Speed Fan Motor
- Designed
to vary in speed based on cooling
requirements, it provides higher efficiency
and quieter performance.
Watt/Watts
Electrical power, also expressed as 'W' . For
example, a 100W globe consumes 100 Watts of
electrical power. The W in Watt is always
uppercased, because it is named after a person.
Zone/Zoning
A home may be divided into several different
areas, or zones, to better control the
temperatures throughout the house. The process
of dividing your home into different zones is
called zoning.
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