If you have an older home with a wide brick chimney, you may need a liner depending on how efficient your furnace is. This can lead to acid seeping in through the mortar to the detriment of the chimney. Twisting the flexible liner will help you install the liner if you are getting caught or hung up on the chimney walls. If you have a clay tile chimney, you do not need a liner. Cracked masonry should be addressed from an energy-savings perspective -- a lot of air could be escaping from your home, depending on where the damage to the chimney is located -- but it's not likely to be a fire hazard. Remember that once a chimney liner is installed in an oil furnace chimney flue, that you must maintain it annually. First, the size of the chimney can be an issue. When it comes down to it, you need your furnace functioning as efficiently as possible to ensure you get the warmth and comfort you need this winter. If you have an oil-fired furnace, not only should you have your furnace inspected every year, you also need to have the chimney inspected and cleaned annually, because oil’s by-products of combustion can be very volatile and corrosive. If you have a newer home with a skinny metal chimney flue, these are typically already small enough for higher efficiency furnaces. However, if you're not using your fireplace and your chimney acts solely as a vent for your furnace or water heater, you may not need to have a liner installed. Liner v No Liner. A UL Listed, stainless steel flue liner or a UL Listed, cast-in-place chimney lining system designed to vent the flue gases of oil-fired appliances should be installed. A properly-sized chimney liner protects against fire by providing a proper draft for your furnace, thus controlling the amount of heat moving through the chimney. For gas venting appliances, the chimney flue / venting rules are more complex, simply because of the variety of products on the market. A properly-sized chimney liner protects against fire by providing a proper draft for your furnace, thus controlling the amount of heat moving through the chimney. Is this true ??? Furnace technology has advanced significantly in recent years, raising concerns over chimney use. Wadsworth: Do you Need a Chimney Liner? As a result of changing technology, many existing masonry chimneys aren't able to meet the specific demands of new furnaces. A CSIA Certified Chimney Sweep can properly evaluate, size, recommend and install the appropriate chimney liner for your home heating equipment. An oil furnace needs a chimney liner.The purpose of any chimney liner, or flue, is to keep the smoke, fumes and toxic gases from penetrating the chimney mortar and entering the living space. However, since the temperature of the steam they produce is drastically reduced to about 400 degrees Fahrenheit, they do not need the large cavity of the chimney. If you have a new oil furnace installed, it’s likely you’ll need to have your oil flue relined. Now you will need to head into the house to finish connecting the tee. Gary Sprague is a master plumber with more than 25 years of experience. Advantages: If properly installed and maintained, metal chimney liners are extremely safe and durable.Stainless steel is suitable for wood-burning, gas, or oil appliances, while the aluminum is an inexpensive alternative for certain medium efficiency gas applications only. Chimney Liner Depot: Cleaning an Oil Furnace Chimney, Ultimate Chimney Sweep, Inc.: FAQ's about Chimneys, Caps and Critters. Both times, I was the guy inside pulling a rope to pull the liner down the chimney while the HVAC guy was on the roof shoving the liner down the chimney. Now, why is this necessary? And neglecting to clean your oil furnace can lead to … If the preponderance of evidence points to relining, you've got some choices to consider. That’s why FLAME will credit 100% of the repair cost toward the purchase of new equipment if purchased within 15 days of the repair. Most find out after the chimney clogs or the interior of the clay liner or brick has cracked or collapsed. There are several reasons for this furnace-chimney incompatibility. Code requires that the smallest diameter be used for the combined input of all appliances. They are made out of metal and they reduce the size of the chimney space, so that the steam can fill it up. Now consider another hom… One of the most common questions asked on the HETAS Consumer Helpline is Do I need my chimney lined? What Are the Causes of Flame Rollout in a Gas Boiler? We guarantee that our technicians verify cracks and voids in heat exchangers during their inspections. © Copyright 2020 Hearst Communications, Inc. 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