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There are several AC unit problems to troubleshoot, but luckily you can identify them by keeping a close eye on your system. Look out for the following signs that your AC needs repair:

• Unusual noises during operation

• AC unit blows warm air

• AC unit doesn’t come on or turn off with temperature changes

• Strange odors come through the vents

• AC unit cycles on and off rapidly

• Indoor air is more humid or less comfortable than usual

• AC unit keeps tripping your breaker

• Fan in the outdoor compressor doesn’t operate when the AC is on

An HVAC system typically lasts between 10 and 30 years, with an average lifespan of 15 to 25 years. The longevity of the system is influenced by factors such as the quality of the unit, usage frequency, local climate, and how well it is maintained. Regular maintenance, including cleaning, filter replacements, and professional inspections, can help maximize its lifespan. Different components within the system have varying life expectancies. For example:

• Furnaces: 15 to 30 years

• Boilers: 20 to 35 years

• Air Conditioners (AC units): 12 to 20 years

• Heat Pumps: 10 to 20 years

• Ductless Mini-Splits: 10 to 30 years

A power outage can damage your air conditioner, just like a power surge can damage any electrical device or appliance. In most cases, your circuit breaker or built-in surge protection on your AC unit protects your AC and just needs a reset. But in other cases, it might be that your AC compressor or capacitor was blown during the power surge. You’ll need to have an HVAC professional repair or replace any AC parts. 

You should only run your dehumidifier in warmer months, such as spring and summer, to get the best performance out of your system. The air gets drier when temperatures drop in the winter months, creating less of a need for a dehumidifier. However, when to run a dehumidifier will depend on your local climate.