Glossary

A manufactured wood panel made out of 1 2 wood chips and glue. Often used as a substitute for plywood […]

The path of electrical flow from a power source through an outlet and back to ground.

A device which looks like a switch and is usually located inside the electrical breaker panel or circuit breaker box.

Optimum fire rating issued by Underwriters Laboratories on roofing. The building codes in some areas require this type of roofing

Combination doors or windows used over regular openings. They provide winter insulation and summer protection and often have self-storing or

The ductwork installed to bring fresh, outside air to the furnace and/or hot water heater. Normally two separate supplies of

The part of a boiler, furnace, or woodstove where the burn occurs; normally lined with firebrick or molded or sprayed

A mechanical device that pressurizes a gas in order to turn it into a liquid, thereby allowing heat to be