If your furnace is blowing cold air, check your furnace filter first. If it's full of debris, then your furnace won't be able to push any hot air out at all. To ensure your furnace blows hot air, you should replace the filter every few months. Remember, it doesn't take much dust and debris for this problem to happen, so stay on top of changing those filters. Your furnace will reward you by making its job easier and blowing hotter air in return.
Other possible reasons for the cold air are more serious and need a professional to complete heating services. It could be a broken blower belt or wheel, a rusted or corroded furnace blower, excessive moisture due to poor insulation, a lack of air circulation in the heating chamber.
If your furnace is blowing cold air, call Roy Mechanical today. We can help with your furnace repairs in Lancaster, Zanesville, or any surrounding area.