Snowstorms and Furnaces03/17/2016 Winter in McHenry isn’t finished yet. Mother Nature can often be unpredictable. While it can be nice one day, the next day could dump snow on us. When this happens, you can help dodge the need for surprising furnace service by taking some precautions. The exhaust from both conventional furnaces and high-efficiency furnaces is directed outside of your residence. But, there is a difference between these two. High-efficiency furnaces also bring fresh air from the outdoors into your house, which means it’s vital for air to be able to move freely to ensure appropriate and safe operation. Once in a while the intake and exhaust pipes of high efficiency units leave through the side of your home or vertically through the roof. When this happens, you’re susceptible to having heavy snowfall bury them, which will block the free flow of air your high-efficiency furnace needs. (Don’t fret, though. High efficiency furnaces are meant to automatically shut off if these pipes are blocked.) To prevent air flow issues during a heavy snowfall, be sure to: Ensure there’s a 3-foot/1-meter clearance around your intake and exhaust pipes. Examine the area often and move any snow that has fallen into the cleared area. We understand the weather in McHenry can change frequently during the last few weeks of winter and that weather may impact the operation of your furnace. If you want us to check out any areas around your house or if you need answers to any questions, call Jett's Heating & Air Inc. in McHenry at 815-459-4700. You can also set up an appointment with us online to get further information. Your family’s safety and comfort are our top priorities.