The A11D-4 features a direct reading scale

Common Questions: How do I know if my furnace limit switch is bad

or physical wear from the frother blade if the motor shaft becomes misaligned

The capacitive technology is engineered to recover quickly from saturation without permanent damage or loss of accuracy

ensuring seamless plug-and-play installation without wiring harness adapters

Lennox 36M22 Blower Wheel R-410A The A11D-4 features a directAs a field technician, you know that a failed blower assembly can sideline a furnace and lead to unnecessary motor strain. The Lennox 36M22 Blower Wheel is a high performance 12" x 10 1 2" CW 1 2" Bore Wheel engineered for precise airflow in 12 inch residential and light commercial air handlers. This direct drive blower wheel features a 54 blade configuration designed to optimize static pressure and maintain manufacturer rated CFM in high efficiency