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Even if you have a top-tier AC unit, you may eventually encounter a frozen air conditioner at night. This air conditioning issue can be stressful as your home struggles to reach a comfortable temperature at night, especially during the summer heat. Unfortunately, air conditioning repair hacks won’t work without studying the potential causes of the problem. So, keep reading to learn, “Why does my AC stop working at night?”
You may have a frozen evaporator coil whenever your central or window air conditioning unit stops working. In addition, if your AC isn’t cooling or the AC system runs nonstop, it could be insufficient airflow from dirty AC filters. In either case, it’s good to know what’s happening before you call an air conditioning service.
You need a licensed HVAC professional to diagnose and treat a Freon leak because unlicensed people cannot legally handle air conditioning refrigerants.
Losing air conditioning efficiency at nighttime is a common problem for AC users, indicating a fault somewhere in the system. In addition to increased electricity consumption, your AC system may cause damage to your home from water or refrigerant leaks. Luckily, proper maintenance and preventative inspections can help mitigate severe problems.
Dirty air filters, clogged vents, and damaged AC ducts can negatively impact the airflow in your air conditioner. Unless you clean your ventilation system regularly, the dirt and dust can prevent your AC from cooling your home.
If your AC freezes and stops working, the issue could be a refrigerant leak. Low refrigerant levels cause the evaporator coils to get too cold, leading to frozen coils and diminished cooling power.
As the temperature drops at night, the pressure in the AC system will drop. If the outside temperature drops too quickly, your air conditioner may lose its cooling ability.
If your blower motor isn’t working, your air conditioner cannot pull air from your home to complete the heat exchange process. Fortunately, a broken blower motor is easy to spot. If the outdoor unit is running, but the indoor unit isn’t, the blower motor is faulty.
A dirty air filter in an AC unit will lead to insufficient airflow, warm indoor temperatures, and higher energy bills.
An AC contactor passes electricity from your home to the air conditioner’s components. The contactor can get stuck, leading to an AC unit that won’t shut down or turn on.
STAT: According to a 2020 US EIA (Energy Information Agency) survey, 42% of Americans have a programmable thermostat temperature. (source)