Rheem a243 1-speed Draft Inducer Motor 1/50 Hp 3400 Rpm 115V Replaces 7021-7790

Product Description

The Rheem a243 is a single-speed draft inducer motor built for residential and light commercial gas furnace applications. It operates at 115 volts and spins at 3400 RPM, delivering 1/50 horsepower to move combustion gases through the heat exchanger and out the flue. Draft inducer motors are a critical part of any forced-air heating system. They create the negative pressure needed to pull exhaust gases safely out of the combustion chamber before and during each heating cycle. Without a functioning inducer motor, the furnace pressure switch will not close and the unit will not fire. This makes the a243 a go-to replacement part for HVAC technicians servicing Rheem and Ruud furnaces in the field. The a243 is a shaded pole motor with sleeve bearings and an open enclosure design. It draws 1.36 amps at 60 hertz on a standard single-phase circuit. Rotation is clockwise when viewed from the shaft end. The outlet shape is round with no outlet flange, which matches the original factory configuration on compatible units. Insulation is Class B rated, and the motor includes thermal overload protection for added reliability during continuous operation. Maximum ambient temperature is 104 degrees Fahrenheit. The motor carries both CSA and UL approvals, meeting the safety standards HVAC professionals expect on certified equipment. This part directly replaces Rheem OEM part number 7021-7790, making it a precise drop-in swap for technicians who need to restore heating system operation quickly. Keeping a replacement inducer motor on the service van reduces callback time and gets heating systems back online faster during cold-weather demand peaks.

• Direct replacement for Rheem OEM part number 7021-7790
• Shaded pole motor with sleeve bearings, thermal overload protection, and Class B insulation
• CSA and UL approved for use in certified residential and commercial furnace applications

Product Highlights

The Rheem a243 draft inducer motor is a direct OEM replacement rated at 1/50 HP, 3400 RPM, and 115V for reliable furnace exhaust performance. It is built to match factory specs and restore heating system operation with a straightforward swap.

Product Information

Standard Information

• Brand: RHEEM
• Manufacturer Part Number: a243

Technical Specifications

• Voltage: 115V
• Amperage: 1.36 A
• Speeds: 1
• Horsepower: 1/50 HP
• RPM: 3400
• Rotation: Clockwise (CW)
• Motor Type: Shaded Pole
• Bearings: Sleeve
• Outlet Shape: Round
• Outlet Flange: No
• Hertz: 60 Hz
• Phase: 1
• Enclosure Type: Open
• Insulation Class: B
• Overload Protection: Thermal
• Max Ambient Temperature: 104 degrees Fahrenheit
• Approvals: CSA, UL
• OEM: Rheem