The Dayton 1TDP3 is a direct-replacement blower motor engineered to swap in wherever the original Dayton 4C443 or Fasco 7021-4931 has failed. With a 75 CFM airflow rating, 3020 RPM output, and a 4-inch outlet flange, it restores proper ventilation and heat distribution without modification. Automatic overload protection and sealed ball bearings keep it running reliably over the long haul.
Blower motors in RV furnaces, air handlers, and ventilation units take a beating -- constant cycling, temperature swings, and vibration all accelerate wear. When your original Dayton 4C443 or Fasco 7021-4931 burns out or loses torque, the 1TDP3 steps in as a confirmed replacement without requiring new brackets, wiring harnesses, or adapters.
At 0.45 amps draw and 115V AC input, this motor is a light load on your shore power or generator circuit. The 60 Hz rating matches standard North American electrical systems, making it straightforward to wire into any existing single-phase AC setup.
Delivers consistent 75 cubic feet per minute to keep heat or conditioned air moving through the duct system at the designed rate.
Sealed ball bearings reduce friction and resist wear far better than sleeve bearings, extending service life in high-cycle applications.
Built-in thermal overload automatically cuts power if the motor overheats, then resets -- protecting the motor and your wiring.
Standard 4-inch OD outlet flange connects directly to existing ductwork without reducers or adapters in most replacement scenarios.
This motor is a verified drop-in for the following original equipment parts:
If your existing motor carries one of these part numbers on its label, the 1TDP3 is the correct replacement. Cross-reference your motor's voltage (115V), frequency (60 Hz), and outlet flange diameter (4 inches) before ordering if the label is damaged or missing.
The 1TDP3 is rated for a maximum inlet air temperature of 104 deg F (40 deg C). This is important in furnace applications where return air or enclosure temperatures can climb. Ensure the motor is positioned to draw cooler ambient air rather than recirculated heated air to stay within this limit.
The 1TDP3 is designed for straightforward replacement in systems that previously used the 4C443 or Fasco 7021-4931. Standard installation steps apply:
The 1TDP3 is typically found in smaller forced-air furnaces, in-line duct fans, and ventilation air handlers that use 115V AC power. It is well-suited for: