Answering the common search for a 1/5 HP attic fan motor, this guide compares five replacement motors that fit 35407, 3C246A, and 4CH65 style attic fans. The selections are best for homeowners restoring attic ventilation, contractors upgrading existing units, and DIYers seeking quiet, reliable operation. Each option highlights compatibility, performance, and practical trade-offs to help you choose the right motor for your setup.
| Product | Best For | Key Benefit |
|---|---|---|
| VEVOR OEM Upgraded Condenser Fan Motor | Most versatile replacements | 1/5HP, reversible, includes capacitor |
| Sthovd 35407 Vent Attic Fan Motor | Quiet, stable operation | Stable 1500 RPM, low noise bearings |
| FIX ZHANG 35407 AIR Vent Replacement | Exact fit for AIR Vent models | Precise compatibility, copper-wound stator |
| ELECTRIC MOTOR WAREHOUSE 35407 Attic Fan Motor | Direct OEM aftermarket | 1/4 hp claim in listing, direct replacement |
| Motoasis F0510B2944 Power Vent Motor | Smart control & modern installs | Smart thermostat, easy 20-minute replacement |
VEVOR OEM Upgraded Condenser Fan Motor, 1/5HP
The VEVOR motor is designed as a 1/5 HP unit with 1075 RPM and 1.3 A, suitable for a wide range of attic fans that require 208-230 V operation. It includes an overheat protection feature and a capacitor, and it supports reversible rotation for flexible installation. This makes it a solid choice for homeowners seeking a ready-to-install replacement that can adapt to different attic fan configurations. Best for: those needing a versatile, safety-focused replacement that can fit multiple brands.
Caution: Verify compatibility with your existing wiring and capacitor if you plan to reuse a separate capacitor. Not all listings clearly confirm the exact shaft or mounting pattern for every model, so check your current setup before purchasing.
Sthovd 35407 Vent Attic Fan Motor
Sthovd’s replacement targets 35407/4310655 configurations with a 1500 RPM rating and 1/15 HP, 115V, 60 Hz operation. It emphasizes a quiet, precision-bearing construction for smooth air exchange and reduced vibration. Best for: buyers prioritizing low-noise operation and smooth, consistent ventilation performance.
Limitation: Some listings emphasize speed and noise characteristics, but installation details vary by model. Confirm shaft size and mounting style match your current fan before buying.
FIX ZHANG 35407 Air Vent Replacement Motor
This motor is described as a precise match for AIR Vent attic fans, with compatibility for 35407, DRE-PSC-127/20-4P1SP, F0812B3146, F0816B4732, and 4310655. It uses a copper-wound stator and robust rotor construction for efficiency, low noise, and extended service life. Best for: installations requiring exact compatibility and robust materials.
Limitation: Data highlights compatibility, but users should verify shaft dimensions and mounting hardware to ensure effortless retrofits.
ELECTRIC MOTOR WAREHOUSE 35407 Air Vent Attic Fan Motor
This replacement advertises direct OEM aftermarket compatibility for 35407 Air Vent units, with a 1/4 HP claim and 1600 RPM speed. It features a direct replacement approach intended to restore attic airflow quickly without requiring system upgrades. Best for: buyers seeking a straightforward, no-frills replacement that matches OEM form factor.
Caution: The listing mentions 1/4 HP in some variants; confirm your exact motor rating (HP, RPM) and shaft size before purchase to avoid mismatch.
Motoasis F0510B2944 Power Vent Motor with Thermostat
The Motoasis motor is designed for Lomanco 2000/2000TH and 1800 series, featuring an intelligent thermostat that adjusts operation to maintain attic temperatures. It comes with a universal installation kit and claims a 20-minute DIY replacement timeframe. Best for: homeowners who want temperature-controlled ventilation and a quicker install.
Limitation: This model emphasizes smart control; ensure your system supports the included thermostat and mounting kit. Replacement may involve a capacitor upgrade when implementing a thermostat-enabled motor.
Buying Guide: Key Considerations
- Compatibility: Confirm model numbers (35407, 3C246A, 4CH65) and shaft size (1/2″ diameter x 3″ with flats) before purchasing.
- Power and Speed: 1/5 HP options typically run around 1075–1600 RPM. Choose RPM that matches your existing attic fan to avoid under- or over-ventilation.
- Electrical Specs: Check voltage (115V or 120V common) and current draw (roughly 1.3–3.6 A). Ensure your circuit can handle the motor’s load.
- Bearings and Noise: Sleeve bearings with low friction are common for quiet operation. If noise is a priority, look for explicit low-noise claims or larger-diameter bearings.
- Overload Protection: Overheat protection helps prevent burnout. This is especially important in uninsulated attics with high temps.
- Installation Ease: Motors that come with mounting brackets and universal kits save time. DIY replacements often target 20–30 minutes.
- Capacitor Considerations: Some motors include a capacitor; in other cases, you’ll need to match or replace the capacitor separately for proper operation.
FAQ
- Q: What does 1/5 HP mean for attic fan motors? A: It indicates the motor’s mechanical power rating, influencing airflow and energy use.
- Q: Do I need to replace the capacitor when replacing a motor? A: Often yes, as the capacitor is matched to motor specs; verify when purchasing.
- Q: Can these motors fit multiple attic fan brands? A: Some are marketed as compatible with multiple models; always cross-check part numbers and shaft dimensions.
- Q: Is professional installation necessary? A: Many replacements are DIY-friendly, but consult a professional if the wiring or mounting looks complex.
- Q: Will a thermostat-equipped motor save energy? A: A smart thermostat can optimize fan run times, potentially reducing energy use in hot attics.
- Q: What if my fan uses a different RPM? A: Choose a motor with a matching or compatible RPM to preserve airflow performance.
