A generic term for an electrical conductor.

The transfer of heat through matter or space by means of electromagnetic waves.

Energy supplied during periods of relatively high system demands as specified by the supplier.

A wood or gas burning heating appliance that fits into the opening or protrudes on to the hearth of a conventional fireplace.

The process of breaking down organic material; reduction of the net energy level and change in physical and chemical composition of organic material.

This is an independent regulatory agency within the U.S. DOE that has jurisdiction over interstate electricity sales, wholesale electric rates, natural gas pricing, oil pipeline rates, and gas pipeline certification. It also licenses and inspects private, ...

An idealized process in which a working fluid (water, air, ammonia, etc) successively changes its state (from a liquid to a gas and back to a liquid) for the purpose of producing useful work or energy, or transferring energy.

A device that removes contaminants, by mechanical filtration, from the fresh air stream before the air enters the living space. Filters can be installed as part of a heating/cooling system through which air flows for the purpose of removing particulates b ...

A measure of the number of cycles or wavelengths of electrical energy per second; U.S. electricity supply has a standard frequency of 60 hertz.

The ability of a building construction assembly (partition, wall, floor, etc.) to resist the passage of fire. The rating is expressed in hours.

Features and vegetation on the outside of or surrounding a building for aesthetics and energy conservation.

A furnace/combustion chamber in which finely ground fuel is blown in spirals in the combustion chamber to maximize combustion efficiency.

A unit or measure of electricity supply or consumption of 1,000 Watts over the period of one hour; equivalent to 3,412 Btu.

A type of heating system where heat, resulting when electric current flows through an "element" or conductor, such as Nichrome, which has a high resistance, is radiated to a room.

An electrochemical battery that uses lead and lead oxide for electrodes and sulfuric acid for the electrolyte.

A measure of the amount of light incident on a surface; measured in foot-candles or Lux.

A material applied to window panes that controls heat gain and loss, reduces glare, minimizes fabric fading, and provides privacy. These films are retrofitted on existing windows.

A measure of the efficiency of an appliance's energy efficiency.

The period of low energy demand, as opposed to maximum, or peak, demand.

Any gaseous, liquid, or solid fuel used for indoor space heating.