HVAC systems consists of a furnace or heat pump, air conditioner, and fan connected to the ductwork. When your heating or air stops working, you can troubleshoot it in the following ways:
1) Does it have power? Check the circuit breaker and make sure it hasn’t tripped.
2) If you know what component isn’t working, furnace or air conditioner (there is a separate circuit breaker for each) turn that one off for 15 seconds & then turn it back on)
3) Make sure that your thermostat has power whether from the electrical system or batteries
4) To check the heat, turn your thermostat to heat mode and set it 5 degrees higher than the current room temperature. Check for heat at an opened register. Turn the thermostat off if you don’t feel any heat. Sometimes, turning the thermostat off will reset the system.
5) To check the air conditioner set the thermostat 5 degrees below room temperature in cool mode. Sometimes, there could be water in the condensate pan below the unit that is causing the float switch to shut the unit off. Other times, dirty filters can cause the coils to freeze up. You can turn the air conditioner off at the thermostat for a few hours and then change the filter and restart the unit. Never run your system without a filter. Doing so will cause dirt and dust to accumulate on the unit coils resulting in a needed expensive coil cleaning. Filters should be changed every 1-3 months. If you don’t think it is your filters, you could have a blockage in your ductwork.
6) Sometimes, your unit may need additional refrigerant if it is not blowing cool air.
7) Thermostats usually have two separate fan settings which are “auto” and “on”. Ensure the fan is on at the thermostat and the registers are open. Newer thermostats have two settings for the fan: "on" and "auto." When set to "on" the fan will run continually. The “auto” setting only runs the fan when system in cooling or heating.
8) If your system is still not blowing air at all, the blower motor might have damage to the belt or the compressor might be out. In this case, give us a call at (843) 352-8140. Remember, preventative maintenance (we call them club memberships) can help to prevent issues from happening before you’re stuck with a freezing home in the middle of winter or a stifling house in the middle of summer. We are always here to help diagnose problems and find proper solutions.
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