The most common reason for your home air conditioner to stop working is a clogged filter. If your air filter is clogged with dirt, hair and debris, it cuts off the air flow to your AC system, which can lead to a breakdown. That’s why it’s so important to change your filters at least once every three months.
If your air conditioner has suddenly stopped working, change your air filter. If the AC doesn’t start working again within 15 minutes, check your electrical panel to be sure the unit is getting power. If you’re still not getting cold air from your air conditioner after this, call an HVAC technician for a professional assessment.