Armstrong 74W55 Blower-Compressor Air AssemblyArmstrong 74W55 is a compact blower comb air assembly designed for reliable performance across HVAC and industrial applications. Identified by part number Lb 94724aa, this unit delivers steady air flow while fitting into tight spaces. Built for durability, it supports consistent operation in demanding environments and serves as a dependable replacement part for existing Armstrong systems. Whether upgrading your airflow efficiency or replacing a worn

The Armstrong 57W95 supports consistent blower performance by maintaining a dependable seal throughout service life

Design: Pilot-Operated Diaphragm with Unique Double Disc

consistent burner response

Designed for long-term reliability

double-throw) configuration allows two independent circuits or signaling paths

Warranty: 5 years

The kit is designed for easy installation with standard thread and seal fittings

including AO Smith 9005963005 models

this part fits Trane heating systems that require a hot surface ignition

liquid propane gas

Inlet pressure 1/2 psi and an emergency exposure limit of 2

providing flexibility for light drying and debris removal around small components and work areas