Most residential air conditioning systems these days are split, meaning they operate with two units. They have an inside evaporator/air handler unit and an outside condenser/compressor. If the system is a heat pump, the inside-outside roles reverse from cooling season to heating season. Sometimes if one unit continues to run but the other one doesn’t, you (or the AC repair technician) can narrow down what might be the problem.
If the outside compressor unit’s not turning on, for example, the issue could be the power supply. Make sure the outside unit is turned on (there’s probably a switch near the unit). If the outside unit has a separate circuit breaker, check your circuit box and make sure it hasn’t been tripped. A more serious issue if the outside air conditioning unit’s not working would be a broken compressor, capacitor or fan. Often, your Cincinnati HVAC contractor’s technician will recommend a replacement system if the compressor is shot. Typically, they will recommend replacing the entire system rather than just the inside unit, since matched systems work more efficiently and effectively, as well as coming with a good warranty. (A new unit matched with an old unit may not qualify for a warranty.) Plus if one half of a split system has broken down, it’s probably only a matter of time before the other half gives up he ghost. It’s cheaper to buy a complete split system than one half at a time.
If the Inside AC Unit’s Not Turning On…
Similar to the outside unit, if the inside air handler/evaporator unit of your cooling system won’t turn on, or stops working, check the circuit box and power supply. Normally if it’s a thermostat issue, the whole system will stop operating. And as with the outside unit, the problem could be with the equipment itself. That could be a malfunctioning blower or air handler, or a problem with the refrigerant line or coil.
Unless you can figure out the issue yourself and apply an easy fix, you’ll want to contact your reliable professional Cincinnati AC contractor, Jansen Heating & Air Conditioning. Jansen will diagnose the problem and fix or address it promptly. Jansen guarantees 100 percent customer satisfaction on the quality of any of their HVAC service, installation or maintenance work.
And if you have a furnace…
If your combustion furnace won’t turn on, you can try some of the same troubleshooting steps as with the AC or heat pump, just taking into account that there’s no outside unit. The problem could be the power source, circuit breaker, thermostat or the equipment itself. One component of the furnace that’s not matched with an AC or heat pump is the electronic ignition, which may one reason why a combustion furnace doesn’t turn on.