• AC keeps turning on and off
• air is too hot
• air conditioner won’t turn on
• not reaching temperature set on thermostat

The outside unit, called a condenser, does the majority of the work to cool your home. It's made up of a compressor, refrigerant coil, fan motor with a blade, capacitors, and a contactor. The compressor circulates refrigerant, which traps heat in the indoor unit and transfers it to the outdoor unit. Once it's outside, the heat is released into the wild, leaving your home cooler than it was before. If the condenser isn't working properly, then your cooling system won't be effective or may not work at all.

• ice is forming on the outdoor heat pump unit
• not reaching temperature set on thermostat

A heat pump works year round to keep a steady temperature in your home. Sometimes they fail due to faulty controls, poor communication between the control board and the system, or an issue with wiring. Like any other part of your system, it can also wear with age. If your heat pump isn’t working properly during the wintertime, especially if it’s not defrosting, this is likely due to a worn, damaged, failed defrost termination switch or defrost control board. It’s time for a replacement.

• not reaching temperature set on thermostat
• air is too hot

Inside your air conditioning system, there’s a part called the compressor, which acts like the powerhouse of the system. The compressor pumps refrigerant through your AC system to cool the air in your home. When the compressor isn’t working properly, your air conditioner won’t be able to cool the air effectively.

• not reaching temperature set on thermostat

TXV is short for thermostatic expansion valve. It is the part in your air conditioning system that is responsible for maintaining a steady flow of refrigerant to the evaporator using a sensing bulb — critical to keep you cool. In most cases, the TXV fails because the sensing bulb has lost its charge or debris or moisture has clogged the internal orifice.

• air is too hot
• not reaching temperature set on thermostat
• air is too cold

The zone panel is what lets you control the heat in the living room and let the basement cool off at the same time, saving energy and money. The zone panel or control board is the brain of the operation, communicating with all of the other parts in your zone control system to keep it running smoothly. When the zone control board fails, your heating or cooling system will not be able to function or control the temperature properly, and that means it’s time for action.

• puddle around the indoor air conditioning unit
• air is humid
• moisture on cold surfaces
• not reaching temperature set on thermostat
• blower sounds strange
• AC keeps turning on and off
• air smells strange
• air is too hot
• furniture is warped

Your AC unit works to cool the air in your home by way of its evaporator coils. The coils allow the cooling chemicals (needed to cool your air) to evaporate from liquid to gas and absorb the heat in your air, which is how your air gets cooled. Because this part is exposed to such cold temperatures, it is vulnerable to freezing. The coil will freeze if the system is low on refrigerant or has an airflow issue, as a result of a dirty coil, filter, fan wheel, or heat exchanger. If this occurs, and is not caught in time, the issue can escalate further and the larger refrigerant line may freeze. If this is the case, you will see ice on the suction line leading from the inside unit to the outdoor unit.