ESP Universal Air Pressure Switch (Part #NS2-0000-31)
USD 22.49 USD
Specifications
| Brand | ESP |
| Country Of Origin | United States |
Proving Airflow: The suction creates a slight vacuum (negative pressure). This pressure travels through a small rubber hose directly to this pressure switch. A failing draft inducer motor. If the air pressure is too low, the switch will stay open and prevent the furnace from firing up.