Flue / Venting

Related terms

• Hazard

  A condition or activity with potential to cause harm — electrical, structural, dust, fall, or material (lead, asbestos). Identifying haza…

• Fuel Conversion

  Switching an appliance/home between gas, propane, and electric. Affects venting, gas sizing, electrical service, and rebate eligibility.

• First-Hour Rating / GPM

  How much hot water a heater delivers in a peak hour (tank) or gallons-per-minute (tankless). The right sizing metric, not just tank gallons.

• Furnace

  A forced-air heater burning gas/oil or using electric elements, distributing heat through ductwork. The most common U.S. central heating…

• Feeder

  The conductors carrying power from the main panel to a subpanel or large appliance disconnect.

• Galvanized Pipe

  Old zinc-coated steel supply pipe that corrodes and restricts flow internally. A common reason older homes need a repipe.

• Expansion Tank

  A small tank absorbing thermal expansion on a closed system (with a backflow preventer/PRV). Code-required in many areas to protect the h…

• Gas Line / CSST

  Fuel gas piping (black iron or flexible CSST). Adding a range, pro cooktop, tankless heater, or fireplace often requires sizing/extending…