HVAC Capacitor Cross Reference Guide – Dallas TX

HVAC capacitors are one of the most commonly replaced parts in air conditioning systems.
When a capacitor fails, technicians and homeowners often need a quick way to identify
the correct replacement.

This capacitor cross reference guide explains common capacitor sizes and how to
identify compatible replacements for residential air conditioning systems.

Many residential air conditioning systems use dual run capacitors.These capacitors support both the compressor and the condenser fan motor.Common capacitor sizes include:

• 35/5 µF

• 40/5 µF

• 45/5 µF

• 50/5 µF

• 55/5 µF

• 60/5 µF

Original Capacitor      Replacement
35/5 µF                 35/5 µF 440V
40/5 µF                 40/5 µF 440V
45/5 µF                 45/5 µF 440V
50/5 µF                 50/5 µF 440V
55/5 µF                 55/5 µF 440V

The microfarad rating must match exactly when replacing a capacitor.

The voltage rating can be equal or higher than the original capacitor.

HOW TO READ A CAPACITOR LABEL

Every capacitor has a label showing its microfarad rating and voltage.

Example:

45/5 µF 440V

This means:

• 45 microfarads for the compressor
• 5 microfarads for the condenser fan motor

Always replace the capacitor using the same microfarad rating.

Where to Buy HVAC Capacitors in Dallas

Dallas HVAC Parts in Garland carries a wide range of HVAC capacitors for residential air conditioning systems.

If you are unsure which capacitor you need, bring the original capacitor to our store and we will help match the correct replacement.

Our inventory includes common sizes such as:

• 35/5
• 40/5
• 45/5
• 50/5
• 55/5
• 60/5