Description
Armstrong Air 14A43 Low / High Fire Pressure Switch – Dual-Stage OEM Control (Replaces 104549-01)
The Armstrong Air 14A43 Pressure Switch is an OEM dual-stage airflow control component designed for use in modulating and two-stage gas furnaces. With calibrated settings for both low fire (0.45″ VF) and high fire (0.90″ VF), this switch verifies inducer draft pressure before ignition at each burner stage, ensuring safe and efficient combustion.
Ideal for troubleshooting startup issues or replacing a worn component, the 14A43 helps prevent system lockouts, error codes, and unsafe furnace operation. It replaces Part Number 104549-01 and features factory-labeled calibration markings for easy identification.
Key Features:
-
OEM two-stage pressure switch for Armstrong Air furnaces
-
Ensures proper inducer airflow at low (0.45″ VF) and high (0.90″ VF) fire levels
-
Helps regulate ignition across multi-stage burner operation
-
Factory-calibrated for safe startup and sustained performance
-
Replaces part 104549-01
-
Clearly labeled: DNS2-1400-01B / P104549-01
Product Markings:
-
P104549-01
-
LOW FIRE = 0.45″ VF
-
HIGH FIRE = 0.90″ VF
-
DNS2-1400-01B
In Stock and ready to ship, this pressure switch is essential for maintaining combustion safety and proper function in Armstrong Air multi-stage heating systems.
Reviews
There are no reviews yet.