Snowstorms and Furnaces03/17/2016 Winter in the Main Line isn’t finished yet. Mother Nature can often be unpredictable. While it could be nice one day, the next day could dump snow on us. When this occurs, you can help avoid the need for unforeseen furnace service by taking a couple precautions. The exhaust from both conventional furnaces and high-efficiency furnaces is directed outside of your home. However, there is a difference between both of these. High-efficiency furnaces also pull fresh air from the outside into your house, which means it’s significant for air to be able to move freely to ensure correct and safe operation. Once in a while the intake and exhaust pipes of high efficiency units leave through the side of your house or vertically through the roof. When this happens, you’re susceptible to having heavy snowfall bury them, which will hinder the free flow of air your high-efficiency furnace needs. (Don’t panic, though. High efficiency furnaces are planned to automatically shut off if these pipes are blocked.) To stop air flow issues during a heavy snowfall, be sure to: Make sure there’s a 3-foot/1-meter clearance surrounding your intake and exhaust pipes. Examine the area often and remove any snow that has fallen into the cleared area. We know the weather in the Main Line can change every day during the last few weeks of winter and that weather may impact the operation of your furnace. If you want us to look at any areas around your home or if you need answers to any questions, call O'Brien Heating & Air Conditioning in the Main Line at 610-626-2540. You can also arrange an appointment with us online to get additional information. Your family’s safety and comfort are high priorities for us.