Nordyne 1010439R Pressure Switch

The Nordyne 1010439R Pressure Switch is an essential safety part for many Heating, Ventilation, and Air Conditioning systems, especially in furnaces. This specific model is a pressure activated switch which is used to check and confirm that the required airflow is being supplied to the furnace. Its working depends on the ability to identify pressure variations in the system. The Pressure Switch designation is just as simple as labeling the part as a switch that is activated by pressure. The Pressure Ratings -0.60”/-1.50” water column is the only specification that explains how it works. These values are the pressure limits at which the switch toggles between its two electrical states.