Product Overview
The Mars 11970 is a round start capacitor engineered to deliver the high-torque energy burst needed to get single-phase HVAC motors up and running quickly and reliably. With a wide capacitance range of 270–324 microfarads and a 330VAC rating, this capacitor is suited for a variety of motor starting applications across residential and light commercial HVAC equipment.
Key Specifications
- Capacitance Range: 270–324 Microfarad (MFD/µF)
- Voltage Rating: 330VAC
- Form Factor: Round
- Type: Start Capacitor
- Brand: Mars (Motor & Armature)
- SKU / Part Number: 11970
Features & Benefits
- Wide MFD tolerance range (270–324 µF) ensures compatibility across multiple motor platforms
- 330VAC rating provides reliable performance in standard single-phase HVAC circuits
- Round housing design fits common capacitor mounting brackets and housings
- Built for intermittent-duty start applications — energizes the start winding to initiate motor rotation, then disengages
- Durable construction designed to withstand the repeated charge/discharge cycles of motor starting
Typical Applications
- Air conditioner and heat pump compressor motors
- Condenser fan motors
- Blower and evaporator fan motors
- Residential and light commercial HVAC equipment requiring motor start assistance
Why Choose Mars Capacitors
Mars (Motor & Armature) is a trusted name in HVAC electrical components, known for producing capacitors that meet or exceed OEM specifications. The 11970 start capacitor is a dependable replacement or upgrade choice for technicians who need a quality part that installs quickly and performs consistently in the field.







