Receptacle / Outlet

Related terms

• Tamper-Resistant Receptacle

  An outlet with internal shutters preventing object insertion, code-required in dwelling living spaces.

• Recessed Can / LED Downlight

  Ceiling-flush lighting on a planned grid. IC-rated/airtight housings are required in insulated ceilings to prevent heat and air-leak issues.

• Radiant Floor Heat

  Warming a space via tubing or electric mats under the floor. Even, comfortable heat; best designed in during a remodel when floors are open.

• Recirculation Pump

  A pump delivering near-instant hot water at fixtures by keeping the line warm. Saves water; adds energy unless on a timer/demand control.

• Plenum

  The main air chamber off the furnace/air handler from which supply ducts branch and into which the return delivers.

• Refrigerant

  The working fluid that carries heat in an AC/heat pump. R-410A is being phased down to lower-GWP refrigerants (e.g., R-454B) under EPA ru…

• PEX

  Cross-linked polyethylene supply tubing — flexible, freeze-tolerant, fast to install with fewer joints. The dominant modern repipe material.

• Register / Grille

  The supply outlet (register, with damper) and return inlet (grille) terminating the duct in each room.