Plumbing device, used to prevent sewer gas from entering a building, by keeping a water seal in the drain.
A semiconductor in which holes carry the current; produced by doping an intrinsic semiconductor with an electron acceptor impurity (e.g., boron in silicon).
Unit that has the complete steam boiler ready to operate and the equipment necessary for connection to electrical, water and fuel systems.
Mortgage on both the purchased real estate and personal property of a durable type, with the entire amount financed is considered one mortgage.
Package unit or package system
A self-contained unit or system that has the Air Handler & Condenser in same unit. Normally placed outside the home and connected to a duct system by a penetration through the homes foundation. Except for geothermal which is a self-contained indoor unit that is place in a closet, attached garage, basement, or mechanical room.
Any of the commonly used packaged equipment assembly, such as an air compressor, which is mounted on a structural platform and ready to be installed and used.
Transfer of both real estate and personal property. Alternately, the putting together of a group of properties to be sold together, possibly at a discount price because several items are bought in combination.
Fibrous material that is used on faucets to prevent leaks.
The ratio of solar collector array area to actual land area.