Lennox 29W09 Run Capacitor
The Lennox 29W09 Run Capacitor is a high-duty, 70/10 Microfarad 440Vac Round Dual Run Capacitor engineered to support the rigorous electrical demands of high-tonnage residential and commercial condensing units. This genuine OEM component is the direct replacement for 101074-04 and effectively replaces older Lennox catalog numbers like 100335-39 and 21W83. For HVACR professionals, this part provides the precise 70+10 MFD capacitance necessary to facilitate the synchronized starting and running of both the high-capacity compressor and the condenser fan motor within a single, space-saving round housing.
Operating with a 440V rating, this capacitor offers superior dielectric strength and thermal headroom compared to 370V alternatives, making it an essential service part for 13ACX and 14HPX series units. The Lennox 29W09 utilizes non-PCB internal fluids and is rated for 50/60Hz applications with a standard +/- 5% tolerance. When troubleshooting a system where the motor is humming but failing to turn over, or if you observe physical bulging at the terminals, this dual run capacitor restores the necessary phase shift to achieve proper starting torque and peak operational efficiency.
Key Benefits:
- Dual-Section Logic: Integrates 70 MFD for the compressor (Herm) and 10 MFD for the fan in one round can.
- OEM Compatibility: Specifically designed for Lennox, Armstrong, and Ducane equipment as a 101074-04 replacement.
- High-Voltage Stability: Rated for 440Vac to ensure reliability during voltage spikes and high-ambient temperature conditions.
- Optimized Performance: Sustains correct motor amperage draw to minimize winding heat and prevent premature motor failure.
Common Questions:
- Can I use an oval capacitor instead of this round 29W09? As long as the 70/10 MFD and 440V ratings match, an oval version can work electrically, but it may require a different mounting bracket or strap for secure installation.
- What happens if the fan 10 MFD side fails but the 70 MFD side is good? The compressor will run while the fan fails to start, leading to high-pressure trips. It is standard practice to replace the entire dual run capacitor rather than jumping in a secondary single-run capacitor.
- Why does my capacitor show 0.0 MFD when testing? This usually indicates an internal open circuit or a discharged safety internal pressure interrupter. Use a multimeter with capacitance mode between 'C' and 'Herm' or 'C' and 'Fan' to confirm failure.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $26.10
-65%$26.10
$9.13Lennox 29W09 Run Capacitor
The Lennox 29W09 Run Capacitor is a high-duty, 70/10 Microfarad 440Vac Round Dual Run Capacitor engineered to support the rigorous electrical demands of high-tonnage residential and commercial condensing units. This genuine OEM component is the direct replacement for 101074-04 and effectively replaces older Lennox catalog numbers like 100335-39 and 21W83. For HVACR professionals, this part provides the precise 70+10 MFD capacitance necessary to facilitate the synchronized starting and running of both the high-capacity compressor and the condenser fan motor within a single, space-saving round housing.
Operating with a 440V rating, this capacitor offers superior dielectric strength and thermal headroom compared to 370V alternatives, making it an essential service part for 13ACX and 14HPX series units. The Lennox 29W09 utilizes non-PCB internal fluids and is rated for 50/60Hz applications with a standard +/- 5% tolerance. When troubleshooting a system where the motor is humming but failing to turn over, or if you observe physical bulging at the terminals, this dual run capacitor restores the necessary phase shift to achieve proper starting torque and peak operational efficiency.
Key Benefits:
- Dual-Section Logic: Integrates 70 MFD for the compressor (Herm) and 10 MFD for the fan in one round can.
- OEM Compatibility: Specifically designed for Lennox, Armstrong, and Ducane equipment as a 101074-04 replacement.
- High-Voltage Stability: Rated for 440Vac to ensure reliability during voltage spikes and high-ambient temperature conditions.
- Optimized Performance: Sustains correct motor amperage draw to minimize winding heat and prevent premature motor failure.
Common Questions:
- Can I use an oval capacitor instead of this round 29W09? As long as the 70/10 MFD and 440V ratings match, an oval version can work electrically, but it may require a different mounting bracket or strap for secure installation.
- What happens if the fan 10 MFD side fails but the 70 MFD side is good? The compressor will run while the fan fails to start, leading to high-pressure trips. It is standard practice to replace the entire dual run capacitor rather than jumping in a secondary single-run capacitor.
- Why does my capacitor show 0.0 MFD when testing? This usually indicates an internal open circuit or a discharged safety internal pressure interrupter. Use a multimeter with capacitance mode between 'C' and 'Herm' or 'C' and 'Fan' to confirm failure.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Lennox 29W09 Run Capacitor is a high-duty, 70/10 Microfarad 440Vac Round Dual Run Capacitor engineered to support the rigorous electrical demands of high-tonnage residential and commercial condensing units. This genuine OEM component is the direct replacement for 101074-04 and effectively replaces older Lennox catalog numbers like 100335-39 and 21W83. For HVACR professionals, this part provides the precise 70+10 MFD capacitance necessary to facilitate the synchronized starting and running of both the high-capacity compressor and the condenser fan motor within a single, space-saving round housing.
Operating with a 440V rating, this capacitor offers superior dielectric strength and thermal headroom compared to 370V alternatives, making it an essential service part for 13ACX and 14HPX series units. The Lennox 29W09 utilizes non-PCB internal fluids and is rated for 50/60Hz applications with a standard +/- 5% tolerance. When troubleshooting a system where the motor is humming but failing to turn over, or if you observe physical bulging at the terminals, this dual run capacitor restores the necessary phase shift to achieve proper starting torque and peak operational efficiency.
Key Benefits:
- Dual-Section Logic: Integrates 70 MFD for the compressor (Herm) and 10 MFD for the fan in one round can.
- OEM Compatibility: Specifically designed for Lennox, Armstrong, and Ducane equipment as a 101074-04 replacement.
- High-Voltage Stability: Rated for 440Vac to ensure reliability during voltage spikes and high-ambient temperature conditions.
- Optimized Performance: Sustains correct motor amperage draw to minimize winding heat and prevent premature motor failure.
Common Questions:
- Can I use an oval capacitor instead of this round 29W09? As long as the 70/10 MFD and 440V ratings match, an oval version can work electrically, but it may require a different mounting bracket or strap for secure installation.
- What happens if the fan 10 MFD side fails but the 70 MFD side is good? The compressor will run while the fan fails to start, leading to high-pressure trips. It is standard practice to replace the entire dual run capacitor rather than jumping in a secondary single-run capacitor.
- Why does my capacitor show 0.0 MFD when testing? This usually indicates an internal open circuit or a discharged safety internal pressure interrupter. Use a multimeter with capacitance mode between 'C' and 'Herm' or 'C' and 'Fan' to confirm failure.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
