If you turn your furnace on for the first time this winter and find out it’s blowing cold air, don’t worry. Your local air conditioning repair expert Connolly Heating and Air Conditioning shares a list of things you can check before you call for emergency HVAC repairs.
- Thermostats – The thermostat is the “face” of your HVAC system and is logically the first step you should take when troubleshooting heating and cooling system problems. Start with the settings; it may have been accidentally set to cooling instead of heating. If the settings seem to be correct, try turning it a few degrees higher, and check if your furnace is blowing hot air. If it does, set it back, and see if it continues to do so. If it went back to blowing cold air, try recalibrating or resetting the thermostat. Failing that, you should look into thermostat replacement or an upgrade.
- Air Conditioner – Sometimes these problems can be caused by something that’s often overlooked. There’s a chance the air conditioner is turned on by mistake. It doesn’t mean that you have to rush out for air conditioning replacement, though; this can happen if your heating and air conditioning systems have separate, independent controls.
- Air Filters – Clogged air filters can block airflow, which can slow down air circulation. Check the air filters then clean or replace them if dirty. Make it a point to check the registers, and ensure they’re not blocked by furniture or decor.
- Air Ducts – With the furnace turned on, inspect the air ducts for possible leaks. In addition to gaps or holes, look for long uninsulated runs as well as damaged or missing insulation. If you’re losing heat in these areas, it won’t matter how efficient your furnace is as the heat would just be lost along the way.
- Fan Limit Switch – The fan limit switch sets the minimum and maximum temperatures of your furnace. Try setting the upper limit a few degrees higher, and wait until the dial moves. If it does, then ask someone to check one of the heating vents to see if it’s blowing warm air. If you are now getting warm air, wait a few minutes, and set it back to the original temperature. If it stops blowing hot air or if the dial didn’t move earlier, then you may have a faulty fan limit switch.
To experience what sets us apart from other HVAC companies, call Connolly Heating and Air Conditioning today at (925) 420-0078. You can also fill out our contact form to schedule an appointment. We serve many areas in and near Martinez and Concord, CA.