Dayton 1TDU2 PSC Direct-Drive Centrifugal Blower 1/2HP 115/230V 1162 CFM w/ Dual-Speed RPM

Condition: New, open box.

Dayton 1TDU2 is a direct-drive centrifugal (squirrel-cage) blower assembly using a PSC (Permanent Split Capacitor) motor and a forward-curved wheel. It’s built for dependable airflow in HVAC equipment, appliance convection, cabinet ventilation, and general-purpose air movement where a compact, integrated blower housing is preferred over belt-driven systems. The label confirms dual-voltage (115/230V) operation and free-air airflow rating of 1162 CFM @ 60 Hz, making it a strong choice for replacement and retrofit work where performance and mounting geometry must match.

Key Specifications

Blower 

• Brand / Series: Dayton
• Model: 1TDU2
• Airflow: 1162 CFM @ Free Air (60 Hz)
• Horsepower: 1/2 HP
• Voltage: 115/230 VAC
• Frequency: 50/60 Hz
• RPM: 1320 / 1380
• Amps:
  • 50 Hz: 4.8A (115V) / 2.5A (230V)
  • 60 Hz: 7.3A (115V) / 3.7A (230V)
• Thermal protector: Auto-reset (thermal protector: AUTO on warning label)
• Made in: China

Motor 

• Motor type: PSC (capacitor-run / permanent split capacitor)
• Insulation class: B
• Ambient rating: 40°C
• Bearings: Permanently lubricated ball bearings (no relubrication required)
• Motor safeguard: Auto (automatic thermal protection)
• Motor manufacturing model: MG1404340171210

Features

• PSC motor design for stable torque and reliable continuous operation
• Dual-voltage 115/230V flexibility for different installations
• Auto-reset thermal protection (motor will restart after cooling)
• Ball bearings, permanently lubricated (maintenance-friendly)
• Direct-drive blower wheel (no belts, fewer wear items)
• Forward-curved wheel suited to typical HVAC/static pressure ranges

Applications

• HVAC air movers in packaged equipment or custom air handlers
• Appliance convection (stove/heater convection blowers) where geometry matches
• Equipment cabinet/enclosure cooling
• General ventilation retrofits requiring a compact centrifugal blower

Spheres of Application

• Commercial HVAC service and maintenance
• Industrial controls and electrical cabinet ventilation
• Appliance repair and refurbishment
• OEM replacement/retrofit projects

Cross-Referenced Models

When cross-referencing blowers, the most accurate match is by Dayton model + housing orientation + wheel size + outlet. Common cross-reference styles include:

• Dayton 1TDU2 (direct model match)
• Related Dayton OEM blower families with similar HP/voltage/CFM (verify wheel/housing dimensions)

These are the model numbers you’ll most often see tied directly to 1TDU2 as the same fit/function family:

• Dayton 4C831 (commonly listed as the older/discontinued model that 1TDU2 replaces)

• Dayton 1TDU2A (listed by multiple aftermarket sellers as an interchange with 1TDU2)

• Fasco 7024-0788 (very commonly cross-referenced as equivalent to Dayton 1TDU2 / 4C831)

Note: Some sellers also mention “PTDU2” as a “direct replacement” naming for the same style blower assembly; treat it as a seller/aftermarket label unless you can tie it to a manufacturer datasheet.

Comparable Products

• Comparable PSC direct-drive centrifugal blowers in the 1/2 HP class, 115/230V, ~1300–1400 RPM range
• Similar “squirrel cage” blower assemblies from other HVAC aftermarket lines (Packard-style, Fasco-style, etc.) when dimensions and discharge match

1) Direct-fit aftermarket “complete blower assembly” replacements (closest match)

These are marketed specifically as drop-in replacements for 1TDU2 / 4C831 (same application class, similar electrical + airflow, typically include PSC motor + housing/wheel):

• NBK-20531 (aftermarket) – explicitly listed as replacing Dayton 1TDU2 / 4C831 / 1TDU2A and Fasco 7024-0788, with ~1202 CFM, 1/2 HP, 115/230V.

• Direct OEM aftermarket replacements sold under “interchange replacement blower” listings (same fitment set: 1TDU2 / 1TDU2A / 4C831, often also calls out Fasco 7024-0788).

2) Same “Dayton OEM replacement blower” family (confirm spec point)

If you’re comparing listings, note that the airflow is often stated at different static pressures:

• Grainger shows ~1,164 CFM (and also lists ~1,202 CFM @ 0.000 in SP on the same family listing).

• Zoro lists it as 1202 CFM and explicitly notes it replaces 4C831.

3) “Comparable style but NOT equivalent” Dayton model (different performance/voltage)

If you’re okay with different CFM and/or voltage, these are similar-style Dayton centrifugal blower assemblies, but not a 1TDU2 swap:

• Dayton 1TDT3 / 4C870 cross-reference family (commonly shown as ~559 CFM and 230V-only on cross-reference pages).

Larger System Use

This blower commonly serves as a subassembly inside:

• Air handling units / furnaces / make-up air cabinets (blower section + controls + filters + duct transitions)
• Heater/stove convection systems (blower + thermal switch + speed control where permitted/compatible)
• Enclosure ventilation packages (blower + inlet filter + thermostat/relay)

Key match points when replacing:

• Voltage (115 vs 230), RPM/speed requirement, outlet orientation, mounting holes, and wheel/housing fit.

Related

• direct drive squirrel cage blower
• PSC blower motor assembly 1/2 HP
• centrifugal fan housing with forward-curved wheel
• dual voltage 115/230V blower
• cabinet cooling air mover
• HVAC replacement blower wheel assembly
• “air mover for equipment enclosure” (alternate phrasing)

Common Requests:

1. “Dayton 1TDU2 blower replacement 1/2 HP 115/230V wiring diagram”
2. “How to wire Dayton PSC blower motor for 115V vs 230V (brown/grey capacitor leads)”
3. “Confirm Dayton 1TDU2 rotation CW/CCW from shaft end”
4. “Centrifugal blower 1/2 HP ~1160 CFM replacement for HVAC cabinet”
5. “PSC blower motor MG1404340171210 specs and compatible capacitor”

P127; HT9; GT00169