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Page 8 - Capacitor
Shop By Part Category
# HVAC Capacitors - Run, Start & Dual Capacitors
Shop genuine OEM capacitors for air conditioning systems, heat pumps, and furnace blower motors. We stock a complete selection of run capacitors, start capacitors, and dual run capacitors from all major HVAC brands at our Westland, Michigan warehouse.
## Why Buy Capacitors From Technical Hot & Cold?
**Extensive Inventory**
We maintain one of the largest capacitor inventories in Michigan. From 5 MFD to 80 MFD, oval to round, 370V to 440V - we have the capacitor you need in stock.
**Real Parts, Fast Shipping**
Every capacitor is stocked in our Westland warehouse, not dropshipped. Orders placed before 3PM EST ship the same business day.
**OEM Quality**
We stock genuine capacitors from trusted manufacturers. No cheap imports or questionable brands - just reliable, high-quality components.
**Expert Guidance**
Not sure which capacitor you need? Our team can help you identify the correct MFD rating, voltage, and terminal configuration for your application.
## Types of HVAC Capacitors We Carry
### Run Capacitors
Single-section run capacitors remain energized while the motor operates, improving efficiency and extending motor life. Available in:
- Round metal can style (most common)
- Oval metal can style
- Voltage ratings: 370V and 440V
- MFD ratings: 5, 7.5, 10, 12.5, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80 MFD
- All with mounting bracket and terminals
### Dual Run Capacitors
Dual capacitors serve both the compressor and fan motor in AC systems. Two capacitance values in one convenient package.
- Common combinations: 35+5, 40+5, 45+5, 50+5, 60+5, 80+5 MFD
- 370V and 440V ratings
- Oval metal can design
- Saves space and simplifies wiring
### Start Capacitors
Start capacitors provide extra starting torque for compressors and motors, then disconnect once running.
- High MFD values: 88-108, 108-130, 130-156, 161-193, 216-259, 270-324 MFD
- Used with potential relays or start relays
- Hard start kit components
- 110V and 220V ratings
### Turbo Capacitors (Hard Start Kits)
Complete hard start capacitor kits with integrated relay for compressors that struggle to start.
## Popular Capacitor Brands
- **Turbo** - Industry standard HVAC capacitors
- **Titan** - High-quality replacement capacitors
- **Mars** - Reliable capacitors for all applications
- **Supco** - Professional-grade HVAC capacitors
- **GE/Genteq** - Original equipment manufacturer
- **Carrier** - OEM capacitors for Carrier equipment
- **Trane** - OEM capacitors for Trane systems
## How to Identify the Right Capacitor
Check your old capacitor for these specifications:
1. **MFD (Microfarad) Rating** - Must match exactly or within ±6%
2. **Voltage Rating** - New capacitor must be equal or higher (370V or 440V)
3. **Terminal Configuration** - Match the terminal arrangement
4. **Physical Size** - Ensure it fits in the available space
5. **Shape** - Round or oval to match mounting bracket
## Capacitor Selection Guide
### For Air Conditioner Compressors:
- 1 ton: 15-25 MFD
- 1.5 ton: 20-30 MFD
- 2 ton: 25-35 MFD
- 2.5 ton: 30-40 MFD
- 3 ton: 35-45 MFD
- 3.5 ton: 40-50 MFD
- 4 ton: 45-55 MFD
- 5 ton: 55-70 MFD
### For Condenser Fan Motors:
- Typically 5-7.5 MFD for residential systems
- 10-15 MFD for commercial applications
### For Furnace Blower Motors:
- 3-15 MFD depending on motor size
- Check motor nameplate for exact rating
## Common Capacitor Symptoms
Replace your capacitor if you notice:
- AC compressor won't start or hums
- AC cycles on and off frequently
- Reduced cooling capacity
- Higher than normal energy bills
- Compressor runs hot
- Fan motor won't start
- Bulging or leaking capacitor case
- Capacitor reads out of tolerance (±6%)
## Capacitor Safety Information
⚠️ **IMPORTANT SAFETY WARNINGS:**
- Capacitors store electrical charge even when power is off
- Always discharge capacitors before handling
- Use insulated tools rated for electrical work
- Turn off all power before servicing
- Never touch terminals while system is energized
- Dispose of old capacitors properly
## Capacitor Installation Tips
**Proper Discharge Procedure:**
1. Turn off all power to the unit
2. Use insulated screwdriver to short terminals
3. Verify no charge remains with multimeter
4. Then safely remove old capacitor
**Installation Best Practices:**
- Mount capacitor securely with bracket
- Use proper wire gauge and connectors
- Ensure tight terminal connections
- Keep capacitor away from heat sources
- Route wires to prevent chafing
- Label wires before disconnecting old capacitor
## Capacitor FAQs
**Q: Can I use a higher MFD capacitor than specified?**
A: No. Use only the MFD value specified on your equipment or within ±6%. Higher values can damage the motor.
**Q: Can I use a 440V capacitor when 370V is specified?**
A: Yes. Higher voltage rating is acceptable and may provide longer life. Never use lower voltage.
**Q: How long do HVAC capacitors last?**
A: Typically 10-20 years, but heat, cycling, and power quality affect lifespan. Check annually as preventive maintenance.
**Q: Can I test a capacitor myself?**
A: Yes, with a capacitance meter or multimeter with capacitance function. Reading should be within ±6% of rated MFD.
**Q: Do you offer local pickup in Westland, MI?**
A: Absolutely! Visit our warehouse for immediate pickup. We'll help you find the right capacitor.
## Contractor Bulk Pricing
Stock your service vehicle with commonly-used capacitors. We offer:
- Volume discounts on case quantities
- Mix-and-match bulk pricing
- Fast order processing for contractors
- Technical support for tricky applications
Call us about contractor accounts and special pricing!
## Need Help Selecting a Capacitor?
Our HVAC parts specialists are here to help! Contact us:
- **Phone:** [Your phone number]
- **Email:** [Your email]
- **Hours:** [Your business hours]
- **Location:** Westland, MI - Local pickup available
**Browse our capacitor selection below or contact us for expert assistance!**
Can't find what you're looking for?
If you don't see your model or part, call us! Our friendly technicians are standing by. We can help you find the part you need with guaranteed fitment. Speak with us today at (734) 326-3900.
