Fast, affordable fix for the most common AC problem in Las Vegas. Usually completed same-day.
An AC capacitor is a small electrical component (about the size of a soda can) that stores and releases energy to start and keep your air conditioner's motors running. Think of it as a battery that gives your AC the power boost it needs to start and maintain operation.
In Las Vegas' extreme heat, capacitors work overtime and fail more frequently than in moderate climates. The constant demand during 110°F+ days puts enormous stress on this component, making capacitor failure the #1 most common AC repair in our area.
Outdoor unit completely dead or clicks but doesn't turn on
Takes several attempts to start or stutters when starting
Outdoor unit hums but fan doesn't spin
System turns on and off repeatedly
Sudden increase in electricity usage
System runs but doesn't cool effectively
A failing capacitor forces your AC compressor to work harder, which can lead to compressor failure—a $1,200-$3,500 repair. If you notice humming sounds or hard starting, shut off your AC immediately and call for service. A $150-300 capacitor replacement is far cheaper than a new compressor.
From diagnosis to testing, capacitor replacement takes 1-2 hours. Most technicians carry common capacitor sizes, making same-day service possible. This is one of the quickest and most affordable AC repairs.
Good News: Many companies waive the diagnostic fee if you proceed with the repair same-day. Always ask about this when calling. In Las Vegas' peak summer season, expect prices on the higher end of ranges due to increased demand.
Las Vegas outdoor units reach 150°F+ in direct sun
AC runs 12-24 hours/day during summer
Grid stress during peak demand
10-15 year lifespan reduced to 8-12 years here
Capacitor tested during tune-up
Reduces internal temperature
Reduces strain on system
Preventive replacement during maintenance
If your AC is 8-10 years old and the capacitor hasn't been replaced yet, consider preventive replacement during your annual tune-up. At $150-250, it's cheap insurance against summer breakdown. Technicians can test capacitance and recommend replacement if readings are declining, before complete failure occurs.
AC capacitor replacement costs $150-$400 in Las Vegas, with most homeowners paying $200-$300. This includes the capacitor itself ($15-75), labor ($75-200), and diagnostic fee ($75-125, often waived if repair completed). Emergency after-hours service adds $50-150.
AC capacitors typically last 10-20 years in moderate climates, but only 8-12 years in Las Vegas due to extreme heat and constant use. Systems that run 24/7 during summer months experience more stress. Annual maintenance helps identify weak capacitors before complete failure.
While technically possible, DIY capacitor replacement is not recommended. Capacitors store dangerous electrical charges even when power is off, and improper discharge can cause severe shock or death. Additionally, misdiagnosis is common—what seems like a capacitor failure could be a motor or compressor issue requiring different repairs.
A failing capacitor forces your compressor to work much harder, generating excessive heat and dramatically shortening compressor life. Compressor replacement costs $1,200-$3,500—much more than a $150-300 capacitor. If your AC is humming but not starting, turn it off immediately and call for service to prevent compressor damage.
Common signs include: AC won't start but hums, hard starting (multiple attempts needed), frequent on/off cycling, or weak cooling. Visual signs include bulging, leaking, or burnt appearance of the capacitor. A multimeter can measure microfarads to confirm, but professional diagnosis is recommended for safety and accuracy.
Get fast, affordable service from qualified HVAC technicians in Las Vegas