The open area above the ceiling and under the roof deck of a steep-sloped roof.
Attic fan
A fan mounted on an attic wall used to exhaust warm attic air to the outside.
Attic vent
A passive or mechanical device used to ventilate an attic space, primarily to reduce heat buildup and moisture condensation.
Audit
The process of determining energy consumption, by various techniques, of a building or facility.
Auto scroll
Auto scroll is the same sabre saw feature as manual scroll plus the ability to switch to an automatic mode, wherein the blade can follow even intricate cuts by slightly guiding the saw in the direction of the cut.
Auto switch
The auto switch is a synchronized power switch that automatically turns an attached wet/dry vac or worklight on or off when power to a tool is turned on or off.
Automatic damper
A device that cuts off the flow of hot or cold air to or from a room as controlled by a thermostat.
Automatic meter reading system
A system that records the consumption of electricity, gas, water, etc, and sends the data to a central data accumulation device.
Auxiliary energy efficiency or system
Energy required to operate mechanical components of an energy system, or a source of energy or energy supply system to back-up another.
Availability
Describes the reliability of power plants. It refers to the number of hours that a power plant is available to produce power divided by the total hours in a set time period, usually a year.
