All AC and heat pump capacitors fail eventually. Capacitors are one of the most common parts that need to be replaced on residential air conditioning systems. They typically provide several years of service, but you'll need to replace them at least once if you keep the same air conditioner for more than ten years.
You should always replace the capacitor with the value specified by the manufacturer. If this is the start capacitor, then an increase of 10 mfd (14% higher) may be acceptable. But if this is the run capacitor then it could cause an increase in current flow and cause the compressor to overheat.
For AC capacitor replacement, anticipate spending between $150 and $400, depending on the capacitor's type and accessibility. A bad AC capacitor is a fairly minor repair, and most HVAC technicians will recommend a repair rather than replacing the unit when the capacitor is the problem.
Usually, it is a quick fix, but sometimes the failure can be caused by a much bigger problem. The most expensive part of an AC unit to replace and repair is the air compressor.
For most ACs, this is about 15 to 20 years. However, even though your air conditioner might be rated to last this long, this doesn't mean that all of its components will. In most households, AC capacitors need to be replaced approximately twice throughout an air conditioner's lifespan.
A sure sign of a bad AC capacitor is a humming sound from within the access panel. Any humming noises indicate a problem with the air conditioning system or the components of the AC unit. Try turning the power on and off again to see if it was a one-time issue with the motor or a recurring problem.
Since AC capacitors are high-voltage components that might cause significant injury to you even if the power is out, it is strongly recommended against changing them yourself. Follow any instructions provided with your new unit purchase if you're thinking about replacing your own AC capacitor filter.
However, if you have taken proper care of your equipment over the years, it may have plenty of life left. 14 to 20 years old: This is the average life span of well-maintained HVAC equipment. A breakdown at this age may warrant a replacement.
Does homeowners insurance cover air conditioner replacement? If your air conditioner is damaged or destroyed due to a covered peril, such as lightning or a windstorm, your homeowners insurance policy may pay to repair or replace the unit, up to your coverage limit and minus your homeowners insurance deductible.
Metal components, such as copper from the refrigerant lines and aluminum from the coils, are particularly valuable in recycling. The AC compressor often contains materials like copper and steel, which are in demand in recycling markets.
After having your helper shut the system off, you will want to stand next to the blower or the HVAC unit to hear if the unit makes any noises when it tries to start. If you don't hear anything and the unit doesn't try to start, the problem is due to something other than the capacitor.
Overheating. If your air conditioner is constantly running or is too old, this can cause the capacitor to overheat and fail. To prevent this, it's helpful to give your system a break every now and then by turning it off for a few hours. This will help prolong your air conditioner's life and its parts.
On average, AC capacitors last 10 years, but their life span can range anywhere from five years to 20.
If the capacitor is damaged or worn out, it can cause the compressor to work harder than it should, which can lead to a humming noise coming from the access panel of the condenser unit. Such a sound may also be coming from the AC's motor, so try turning the AC unit off and on once to see if that's the case.
Getting Regular Inspections
They will check your capacitor and be able to tell if it's near the end of its life. To prevent trouble, your technician might recommend replacing your capacitor before it dies.
Return the breaker to the breaker box, turn the main power on, and turn on the thermostat. Ensure the AC unit is working normally again. If you replaced the capacitor properly and the AC unit is still running slow or not dispensing cool air, there may be another problem.
The answer is yes; home warranties can cover HVAC, but it depends on the terms of your plan. This is one of the many reasons why paying attention to the plan you select when choosing a home warranty company is essential.
Contact your insurer to inquire about an endorsement or rider that specifically includes your AC unit. This will likely increase your premium, but it ensures protection against unexpected breakdowns or damages under covered perils. Documentation: Maintaining documentation is vital for a smooth claims process.
While every unit is different, and every homeowner has a different understanding of when their central air conditioner is broken beyond repair, it's fair to say that, with proper maintenance and care, you can expect a good 15 to 20 years of cooling from a new high efficiency air conditioning system.
Many HVAC technicians use the "5,000 rule" when making this decision. Simply multiply the age of the system by the repair cost. If it's under $5,000, consider a repair; if it's over $5,000, it's probably better off buying a new unit.
Repair: Older AC units typically have lower energy efficiency ratings (SEER), which means higher electricity costs. For instance, a 20-year-old unit may have a 10- or lower SEER.
If your aircon is older than 10 years and plagued with ongoing issues, you might want to consider replacing your air conditioner. A benefit of replacing your aircon is that you will get a more energy efficient model which would ultimately save you a lot of money on power bills.
Typically, AC capacitor replacement can be completed in a few hours or less. However, if your AC unit is older and more complex, AC capacitor replacement may take longer.
AC Unit Makes Clicking or Humming Sound While Running
If the capacitor has gone bad, the motor will still attempt to operate — but without the power necessary to do so, the motor can overwork and burn out, leading to major damage that can come with a hefty price tag.
Prices usually range from $200 to $400 depending on the type of capacitor and system you have. Photo: Courtesy of Angi member Kathy W. Photo: Courtesy of Angi member Kathy W. Replacing an AC capacitor costs $180 on average, including the price of the capacitor plus the cost of labor to install it.