Heating plus A/C units need refrigerant. Your machine will suffer major problems without proper refrigerant levels. The compressor plus evaporator coils freeze up without refrigerant. The air cannot be cooled without refrigerant, so your program will not toil properly. When your machine has a leak, refrigerant seeps out, plus your Heating plus A/C machine stops cooling the air. This is an issue that must be repaired plus will not get better on its own. In fact, addressing the issue quickly can help avoid other destruction to your unit. The largest sign that your Heating plus A/C machine has an issue is when your home is no longer at the temperature you desire. During moderate weather when your A/C machine is running but not cooling your home, it’s a sign that your machine is leaking refrigerant. If your Heating plus A/C machine freezes, there is a problem. If your evaporator coils are frozen, your program is leaking refrigerant. Your program will freeze if the refrigerant does not toil with the evaporator coils. When your a/c machine is running, but the air is warm, it could be leaking refrigerant. It’s also why your home does not believe cool. Your Heating plus A/C machine cannot cool the air without refrigerant, so moderate air flows through it. About 50% of home energy is used by the Heating plus A/C system. If you notice an increase in your home’s energy bill, it’s likely a result of a concern with your Heating plus A/C system. Your Heating plus A/C machine should not make odd noises. If loud, crackling, bubbling or banging noises beginning to occur, that’s a sign of a problem. When you hear abnormal sounds from your Heating plus A/C unit, turn it off right away. Continuing to run your machine could cause more disfigure. Your machine will not produce cool air if the refrigerant leaks. At that point, you should not keep your machine on.