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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.

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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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.

Control

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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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.

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.

Furnace

Indoor unit that uses gas to heat your home in the winter

 

Head Pressure
Pressure that exists in condensing side of refrigerating systems.

 

Heat Pump

Outdoor unit that warms your home in the winter and cools your home in the summer with quiet, reliable efficiency.

 

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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Liquid Line
Tube that carries liquid refrigerant from the condenser or liquid receiver to the refrigerant control mechanism.

 

Low Side
The parts of the refrigerating system subject to the evaporator pressure

 

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.

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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