Gas furnace parts

An inducer motor draws __________ air into the furnace.

An inducer motor creates a negative draft closing the __________ switch contacts.

When checking pressure switches the best practice is to use __________.

Igniters are made from silicon ________ or silicon carbide.

Flame sensor current is quantified in Micro ____________.

A limit switch is an overtemperature device use to prevent overheating of an appliance such as a furnace. Limit switches are in the normally ___________ position.

A rollout switch is ____________ resettable.

A fan switch is in the normally __________ position.

An air temperature rise is the temperature difference between the return and heated ___________ air.

Which tool would you not use when checking gas pressure on a furnace?