Tuesday, March 26, 2013

HVAC Vocabulary Part One


Understanding what the terms are can help you save time and money when you need HVAC service.

AFUE - Annual Fuel Utilization Efficiency. A measurement used to rate furnace efficiencies by dividing the ratio of heat output by heat input.

Air Balance Test - A test used to measure airflow across a tower or air handler system.

Air Conditioner - A device that changes humidity levels, temperature or quality of air.

Air Handler - Parts of a system including the fan-blower, filter and housing. The portion of the central air conditioning or heat pump system that moves heated or cooled air throughout a home’s ductwork. 

Burner Orifice - The opening in the burner through which the gas or fuel passes prior to combustion.

Capacity - HVAC capacity is the output produced by the heating or cooling unit and is measured in BTUs per hour. For cooling it is sometimes expressed in "tons."

CFM - Cubic Feet per Minute. A measurement of airflow volume.

Charging a System - Adding coolant, or refrigerant, to an HVAC system.

Coil Cleaning - The act of removing or cleaning dirt, dust, grime, hair and oils from either an indoor or outdoor evaporator or condenser coil.

Compressor - A pump that increases the pressure of gas. The motor in the compressor is the main consumer of energy. If the compressor operates out of its original design, it will effect energy consumption.

Condenser Fan - A fan that passes air over the condenser coil to facilitate the removal of heat from the refrigerant.

Contactor - A switch that can repeatedly cycle, making and breaking an electrical circuit. When sufficient current flows through the A-coil built into the contactor, the resulting magnetic field causes the contacts to be pulled in or closed.

Damper - Found at the exit point of ductwork, this plate usually contains grates that can be opened or closed to control the flow of air into a zone.

Dehumidifier - A device that removes humidity, or moisture, from the air.

Diffuser - A grille over an air supply duct with vanes that distribute the discharging air in a specific pattern or direction.

Speaking of understanding if you have an AC question you should be calling Aaron’s Mechanical Service a call at 623-388-4436.

Aaron’s Mechanical Service
623-388-4436
info@aaronsmechanicalservice.com
http://aaronsmechanicalservice.com

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