Trane Capacitor Parts

Trane Furnace and AC Capacitor Parts

Run capacitors are one of the most common HVAC failures across Trane furnaces and air conditioning systems. When your Trane air conditioner or furnace won't start, runs hot, or the outdoor condenser unit stays silent, a failed capacitor is often the culprit. Trane uses dual capacitors (motor + compressor in one unit) for central AC and single capacitors for furnace blower motors and inducer motors. Match the microfarad (µF) rating exactly — it's printed right on the old capacitor. Voltage can be equal or higher, but the µF must be precise or you risk damaging the motor or compressor.

Replacing a Trane capacitor is one of the fastest, least expensive HVAC repairs. A $15 to $40 part and 15 minutes of work often restores full cooling or heating. Use our Trane capacitor parts page to find your model number and get the exact replacement for your system.

• Outdoor AC unit won't run: Dual run capacitor (motor + compressor) has failed
• AC cools weakly or compressor clicks on/off: Compressor capacitor section is bad
• Furnace blower runs slow or won't start: Blower motor capacitor is failed
• Draft inducer motor hums but won't spin: Inducer motor capacitor is weak or dead
• Capacitor bulges, leaks, or smells burned: Replace immediately — never attempt to repair a damaged capacitor

Trane Capacitor Replacement Guide

Why do Trane capacitors fail?

Capacitors store electrical energy to start and run motors efficiently. Over time — typically 5 to 10 years — the electrolyte inside degrades from heat cycling. Summer heat stress is hardest on capacitors. A failed capacitor means the motor can't get the electrical boost it needs to start or run at full strength. On Trane systems, this shows as a silent outdoor unit (AC dead) or a slow/silent blower motor (furnace not blowing).

How do I find the right Trane capacitor?

The microfarad (µF) rating and voltage are printed on the capacitor's metal casing. For central AC, look at the dual capacitor in the outdoor condenser unit — it will show two µF values (e.g., 45+5 µF at 370V). For furnace blower motors, the capacitor is usually mounted near the motor. Write down the exact µF and voltage, then enter your Trane model number in our lookup tool. Trane's factory-certified positioning means the exact OEM capacitor maintains voltage regulation and longevity better than aftermarket alternatives.

What's the difference between a single and dual capacitor?

A single capacitor runs one motor (like a blower or inducer). A dual capacitor runs two motors simultaneously — the compressor and condenser fan in an air conditioning system. Dual capacitors are always larger and always two-in-one. Never substitute a single for a dual or vice versa. Trane systems clearly mark capacitor type on the unit. When in doubt, take a photo of your old capacitor and match it exactly using the model number.

Is it safe to replace a capacitor myself?

Capacitors store electrical charge even when power is off. Before touching any capacitor, discharge it safely using an insulated screwdriver across the terminals (touch both terminals simultaneously). Wear gloves. If you're uncomfortable working with electrical parts, hire a Trane-certified technician. Repair Clinic carries OEM Trane capacitors — the exact parts your system expects — so when you're ready to install, you'll have the right part for the job.

Order Trane Capacitor Replacement Parts Online

Ordering Trane capacitor replacement parts online is simple and hassle-free with Repair Clinic. Easily search by model number or part number to find the exact capacitor parts you need for your Trane HVAC system. From start capacitors to run capacitors and replacement capacitor kits, we carry the parts required for models like the Trane XR15, XL19i, and more.

With our Price Match Guarantee, you can be confident that you're getting competitive pricing on genuine OEM Trane capacitor parts. We also offer same-day shipping on orders placed by 9:00 PM ET, so you'll receive the parts you need quickly and efficiently.

Whether you're a homeowner or a professional HVAC technician, our extensive resources Our online repair library provides the videos, guides, and step-by-step instructions to support the repair. We provide troubleshooting articles, part testing guides, and step-by-step video walkthroughs to support your repair.

Locating the Model Number on Your Trane Furnace or AC

On Trane furnaces and central air conditioners, look for the model-number data plate on the side of the cabinet, inside the front access panel, or on the blower compartment door. For a heat pump or outdoor condenser, check the exterior nameplate before removing any panels. Record the complete model number, including letters and numbers, rather than the capacitor's rating or part number. Enter that model number in the search bar to narrow the entire Trane parts catalog to parts made for your HVAC unit, including the correct capacitor and related service parts. Matching the unit first helps you avoid comparing incompatible ratings and makes ordering the right replacement faster.