home
We speak HVAC so you don't have to
CONNECT with us!

our tools and detailed reports
can help you choose the best
furnace, boiler, heat pump or
central air conditioner.

Intermittent Ignition Device (IID)

more HVAC definitions

IIDs are linked to a furnace or boiler's thermostat and light the pilot by means of a spark or other heat source when needed. IIDs are more fuel-efficient than the traditional approach of maintaining a continuously burning pilot flame.

Copyright 2002 - 2014 furnacecompare.com