Regardless of how well you maintain your air conditioner, all electric appliances fail after years of usage. This could be due to lack of maintenance, corrosion, and several reasons.
Here are some signs that mean your air conditioning unit needs repair:
Hot air from the unit: The whole point of having an air conditioner is to cool the air inside your home. If your system is blowing hot air, then it may indicate a broken compressor or refrigerant leak.
Moisture near the system: If you notice leaking, puddling, or freezing on your air conditioning unit, you most likely have a condensation line blockage. This line removes condensation that is built up through the process of cooling your home. When it is blocked or leaking, the excess condensation can freeze onto the coils, leak out, or puddle onto the ground. If you notice excess water in any form around your air conditioning unit, give your home warranty company a call immediately.
Weird sounds: Your air conditioner should run fairly quietly – in fact, some systems are noiseless. While the motor might make a sound, you should not hear grinding, squealing, grating, or other loud noises. Your air conditioner may need part cleaned or tightened that has come loose (replacement might be needed as well).
Unusual smells: A strong, pungent smell may indicate the wire insulation in the system is burned and needs to be replaced. Musty smells are an indicator of mold in your ductwork, clogged condensate drain, or dirty cooling coils.
Thermostat not working properly: A thermostat is the command center of the air conditioning system. The thermostat communicates with the AC, letting it know the amount of cold air it must generate. If your air conditioning unit runs for small periods of time prior to shutting itself off, or if it won’t turn on altogether, this can be an indication that the thermostat is not determining correctly if the system is operating or not.
High energy bills: Another indication that your AC system is in need of replacement or repair is an energy bill that quickly rises up without extra usage. The cause of this problem may be one of many including a broken thermostat switch, leaks in your HVAC system’s ductwork, or the elevated age of the air conditioning unit.
To put it in a nutshell, if you notice or smell anything odd, it is time to call an HVAC professional immediately!