Rcd hd42mq120 Ecm Blower Motor 1/3 Hp 1050 Rpm

Product Description

The RCD hd42mq120 is an electronically commutated motor (ECM) designed for blower applications in forced-air HVAC systems. Rated at 1/3 HP and 1,050 RPM, this single-phase motor operates on 115-120 volts AC at 50/60 Hz and is built for continuous running duty (S1). The NEMA 48 frame and counter-clockwise rotation make it a direct fit for residential air handler and furnace blower assemblies. Licensed HVAC technicians and mechanical contractors are the primary installers. The Class B insulation rating indicates a thermal tolerance appropriate for sustained blower operation in ducted residential systems.

This ECM blower motor is suited for residential forced-air systems where variable-speed or electronically controlled airflow is required. ECM motors are commonly found in high-efficiency furnaces and air handlers where reduced energy draw and precise CFM control are priorities. Typical installation scenarios include replacing a failed blower motor in an existing air handler or furnace during a service call or scheduled equipment repair. Verify rotation direction and frame size against the existing motor before installation.

Key Features

• ECM technology delivers improved efficiency over standard PSC blower motors
• Rated 1/3 HP at 1,050 RPM for consistent airflow delivery
• NEMA 48 frame for broad compatibility with standard blower housings
• Single-phase, 115-120 VAC operation at 50/60 Hz
• Counter-clockwise (CCW) rotation — confirm against existing motor orientation before ordering
• Class B insulation rating supports continuous running duty (S1)

Compatibility

Designed as an OEM-style replacement ECM blower motor for residential forced-air furnace and air handler systems requiring a NEMA 48 frame, 1/3 HP, 1,050 RPM, counter-clockwise motor at 115-120 VAC single phase.

Installation Notes

Installation should be performed by a licensed HVAC technician. Disconnect and lock out all electrical power to the air handler or furnace before removing the existing motor. Confirm shaft diameter, rotation direction, and frame size match the replacement unit prior to installation. Follow all applicable local mechanical and electrical codes during service.

Technical Specifications

• Motor Type: ECM (Electronically Commutated Motor)
• Motor HP: 1/3 HP
• RPM: 1,050
• Voltage: 115-120 VAC
• Phase: Single
• Cycle/Hertz: 50/60 Hz
• NEMA Frame: 48
• Rotation: Counter Clockwise (CCW)
• Duty: Continuous Running Duty (S1)
• Insulation Class: B
• Country of Origin: VNM

Standard Information

• Brand: RCD
• Manufacturer Part Number: hd42mq120