NFPA 54 and 211 deal with chimney standards and sizing for the flue. I’d never seen sustained flue gas condensation previously, but the basement floor markings revealed the old coal furnace had been replaced or converted and recently replaced with three new “high-efficiency” boilers. Robert K., Norwich, CT. DEAR ROBERT: Venting of any fuel burning appliance is serious business. Chimneys — you can’t live with them and you can’t live without them — or at least you couldn’t until a few years ago. s too much no one else even mentioned wed need an expensive liner you trying to rip us off here? Air … Check the flue liner for cracks every fall before the heating season begins. Chimney Problems Gas Water Heater Heating System. Chimneys you cant live with them and you cant live without them or at least you couldnt until a few years ago. Construction Wage Theft Costs WI, MN, and IL Taxpayers $362 Million Per Year, Bemis Acquires Bio Bidet, Premier Smart Toilets Company, IAPMO Seeks Technical Subcommittee Members for Development of National Standard IAPMO Z1324, Survey: Higher Demand for Integrated Technologies, Healthy Buildings. If that were to happen, it could drag some of the exhaust gas back into your basement. It's best to use a stainless steel chimney liner if you're high-efficiency water heater or furnace exhausts into a masonry chimney. These systems of chimney liners are listed and tested by the U.L., and are quite harmless and sturdy when correctly mounted and sustained. I have helped install a chimney liner on two occasions. In other words, the square inch area of the chimney must not be more than seven times greater than the flue piping. The cold line is always to the right. It’s required by a number of codes, even though no local inspectors are … These liner systems are U.L. For every 100,000 Btu of combustion, a gallon of condensate can be generated! The new furnace vents directly through the wall to the exterior. My water heater is now the only thing venting into the masonry chimney. Can you see the mistake in this photo? Washington, D.C. Area. You can do a quick check of your chimney to see if it meets an old rule of thumb and some of the current codes. Another live event on March 16, 2021 will introduce Navien’s latest water heater innovations. $600. Today, we’d be either installing a chimney liner or direct-vented high-efficiency appliances. Installing new water heater .62 natural gas 40,000 btu 50 gallon in masonry chimney that is 30 feet high, only water heater now. We learned that a chimney liner can be installed for as low as $2.95 per month in Toronto and GTA if he was to replace his existing old rental hot water heater to an energy efficient rental unit. On the contrary, if you tried to exhaust your furnace and water heater into a power plant chimney, the exhaust gases very likely wouldn't rise. The small amount of warm, or hot air, from your water heater would have a tough time offsetting this falling air that's trying to enter your home. Size, height, exposure (inside the structure, partially exposed or outside) and localized weather conditions all come into play, so there are no one-size-fits-all categories. The flue piping looked like Swiss cheese! Registration for both events is up now at navieninc.com/live. Chimney Liner for Water Heater. Hire a professional chimney sweep to complete the check for cracks in places that are hard to see. Don't use your fireplace with a cracked liner. View All. Around here, most tile liners are 6.5 x 10" and a smaller liner is needed. Subscribe to the FREE Ask the Builder newsletter to receive professional advice for your home. Although the water heater does contribute heat to the chimney during its off cycle, it may not be enough to prime the vent so to speak. Proper furnace / water heater venting is an extremely important issue, which depends on the performance of the house chimney / chimney flue or other exhaust assemblies. A second suggestion that we got is to have a conventional hot water … Gas Water Heater and Furnace Chimney Flue Size Calculations The basic method for the chimney flue size calculations is "The Seven Times Rule" (applies to natural draft and / or fan assisted type appliances vented into the same chimney). More over the monthly rental fee turned out to be cheaper that his current supplier’s and it is all under the same Enbridge billing program. Maintenance Tip #1 Preparing the water heater Turn off the power if its an electric water heater. Appliances that burn wood typically use stainless steel but with the addition of a fire proof insulating sock to make sure the flue gas does not cool down when rising in the chimney. Clay tile liners can suffer from the excessive condensation found in the exhaust of higher efficiency gas appliances (furnaces, water heaters, and boilers) and, over time, could cause chimney liner … CLICK HERE to get FREE & FAST BIDS from local chimney sweeps who can inspect your chimney for defects. In other words, code refinements are forthcoming with regards to venting modern fuel burning appliances. Share. That's about 7 sq inches. It's vented into an unlined chimney and the back draft is too much for the water heater to create the correct draft. FIREPLACES: FIREPLACE INSERTS: FURNACE & WATER HEATERS: WOOD, CORN & WOOD PELLETS: … The other alternative would be to include the cost for a new direct-vent water heater and abandon the chimney completely.”, “Forget it; I’m going with the other guy.”. In 1978, that meant anything above 80%! Imagine if the huge boilers of your local power plant tried to exhaust up your house chimney. Currently, there are many organizations that produce building codes. tested and listed, and if properly installed and maintained are extremely safe and durable. There simply wouldn't be enough room to handle all the smoke and ash. White effervescent trails ran from the chimney’s base down the wall and the same white powdery substance was evident at each joint in the combined flue piping. As tricky as venting has become with today’s high-efficiency appliances, there’s one thing too many of us are ignoring — orphaned category I appliances and how they relate to these older chimneys. If you decide to reline your chimney, by all means make sure you do it under the guidance of your local building department officials. All rights reserved. The dynamics of drafting are complicated. New Jersey Uniform Construction Code requires a chimney certification for replacement of a hot water heater, furnace or boiler. Going to line with 3 or 4 inch pipe which size is better and should one wrap the liner in insulation even if chimney is already clay lined. On February 16, 2021, Navien will host a live virtual launch event for their new line of boiler and combi-boiler products. It locks in moisture and flue gases in your chimney and keeps them out of your home. Tell the homeowner, “Sir, you need a chimney liner because your chimney is unlined brick; its flue is too large to support proper drafting of combustion products, which include carbon monoxide. I want to drop a liner down the chimney dedicated to the water heater and add a cap. I've got a 40 gallon atmospheric-vented water heater that is not venting correctly. They upgraded to a high efficiency gas furnace that now vents out the side of the house via PVC pipe. This stainless steel chimney liner has a 10-grove design for superior flexibility, compressibility and strength. With efficiencies ranging from 30% to 50%, lots of combustion byproducts needed to be safely vented from homes. CLICK THIS IMAGE NOW TO BUY THIS KIT. The rules also state that orphaned water heaters vented into an unlined masonry chimney require the installation of a properly sized liner. Price: $219.47 & FREE Shipping: This fits your . These acids slowly corrode the brick and mortar that make up your chimney. It's best to use a stainless steel chimney liner if you're high-efficiency water heater or furnace exhausts into a masonry chimney. In the NBS tests, unlined chimneys allowed heat to move through the chimney … Open a hot water tap inside the house. Three water heaters had been installed, too, and each apartment had its own gas meter. diameter flue is 12.588-sq.in. A chimney liner is a flexible aluminum tube that connects to your furnace and/or water heater and has a rain cap on the top of it. Each event will offer insight on the newest products from Navien and allow attendees to interact and ask questions live with the Navien team. This is a kit that allows you to install a stainless-steel liner inside a larger masonry chimney clay flue. In the new house I am buying, the furnace and hot water heater have were both replaced by the current owners. The kind of damage I saw in 1978 caused what’s called “spalling” — a freeze/thaw cycle when moisture penetrates masonry products and expansion causes portions to flake off or crack and crumble. My understanding of chimney liners is that as furnaces became more efficient over the years, there's less heat going through the chimney and it has an effect on condensation which will ruin the chimney from the inside out. Have the liner replaced as soon as possible. The following gas water heater … It was a classic case of sustained flue gas condensation, which contains both nitric and sulfuric acids. National Fire Protection Association, Inc. CLICK HERE to Get Tim's FREE & FUNNY Newsletter. 3'' DuraFlexAL 35' Aluminum Chimney Liner Kit - 3DFA-35K Brand: DuraVent. For optimal use and safety, a liner is needed when installing a new heating system, furnace, boiler, or water heater. For readers in the Washington, DC metropolitan region: Current WSSC The clay tile chimney liner is damaged due to shifting, fire damage, or age- or use-related damage; A new appliance (furnace, stove, or water heater) is being installed and vented via a masonry chimney. 316Ti Flexible Chimney Liner Only. Install an increaser in the largest hole in the chimney. Herein lies the problem. Favret will typically install the liner, Frary said, unless the water heater and furnace are on separate chimney chases. Why are direct vent water heaters so expensive? Its located on top of the water heater. Only work on water heaters if you’re handy and comfortable that you know what you’re about to do. Stainless steel is suitable for wood burning, gas, or oil applications. This could cause a carbon monoxide poisoning issue. The chimney is on the outside. Lawyers don’t ignore this If you’re ignoring orphaned water heaters, lawyers and liability experts are not and you’d be wise to broaden the scope of your work to include chimney liners. Flexible chimney liners are only to be installed inside a masonry chimney. Closer inspection revealed it was a combination of frost and ice. The oddities we’ve seen where venting is concerned give rise to grave concerns: standard water heaters replacing direct-vent water heaters to shave costs while using the PVC vent line; high-efficiency furnaces or boilers vented into those old unlined masonry chimneys, which by itself is bad enough, yet the older atmospherically vented water heater continues to exhaust into the same chimney! This process kept the inside of the chimney warm. 4.8 out of 5 stars 3 ratings. Low moisture content cement and vermiculite mortars can also be used to create a new inner lining. If the exhaust pipe is 4 inches in diameter, the flue liner cross sectional area should not … IRVINE, CA – Navien, Inc., the number one brand in high efficiency condensing tankless water heaters, combi-boilers and wall-hung boilers in North America, has announced two virtual launch events for the beginning of 2021. If you find that your chimney does not meet code or it is too large, you can reduce the size of a chimney lining. That heat source has been removed. The chimney had to be rebuilt with a terracotta liner installed. During one winter’s service call for a heating problem, I noticed the exterior north wall of the home had a shiny appearance. This unique alloy is designed specifically to resist acids coming from gas appliances in the flue and extreme stresses of hot and cold cycles. water heater flue is just a bit more than 7-sq.in., so the chimney must not be greater than 49-sq.in. If the inside of the chimney cools down too much or there is too much cold air inside the chimney, the water vapor can condense and saturate the masonry inside the chimney before it can escape into the atmosphere. For many years, the. The ice-sheen that had caught my attention led to the chimney’s protrusion at the roofline and it was obvious its shape outlined the chimney’s exact route and dimensions from basementto- roof. Sometimes the condensed water contains acids that can chemically attack poor quality mortars. Aluminum chimney liners typically are used on gas appliances like gas water heaters. © Copyright 2017 Tim Carter eval(ez_write_tag([[468,60],'askthebuilder_com-box-3','ezslot_19',116,'0','0'])); DEAR TIM: I recently had my heating system replaced with a high efficiency system. Some chimney companies can reduce the size of the chimney by pumping a cement slurry around a giant inflatable bladder. Water vapor is a byproduct of the combustion of natural gas. © Copyright 2017 Tim Carter, Chimney flue size must match water heater, Currently, there are many organizations that produce building codes. Chimneys are like water pipes, they can only handle so much exhaust at a given pressure. I'm concerned about exhaust gas damage that might be occurring inside my chimney. If the exhaust pipe is 4 inches in diameter, the flue liner cross sectional area should not be larger than 88 square inches. They also protect flue masonry from cracks or crumbling mortar due to repeated heating … Complete the form below and each week you'll get: Unsubscribe at any time. Rock-Flex chimney liners are fabricated with the highest quality stainless steel, UL 1777 tested and listed, air and water tight, and provide the best flexibility and strength to contain moisture and flue gases. No longer a blastfurnace- like exhaust to build and maintain buoyant hot exhaust fumes, this was more like a pipe-organ-exhaust with each tenant possessing one of the keys to strike up an exhaust tune. Flue gas produced by your furnace and water heater contains acids . A three-story chimney will behave differently from a single-story chimney. The gas hot water heater, though, is still vented through the original chimney. Liners are sized based on the value, in BTU's they are venting and the height of the chimney. Tell the homeowner, “Sir, you need a chimney liner because your chimney is unlined brick; its flue is too large to support proper drafting of combustion products, which include carbon monoxide. Install the chimney cap to ensure a good fit then remove and apply silicone on the top edge of the chimney (as shown) and reinstall cap. Traditional masonry chimneys were designed and sized to vent very hot flue gases from old coal, wood burning, or low efficiency gas furnaces. The inspection shall include verification that the flue or flues being inspected are free of combustible deposits and blockage or obstruction. The vent pipe is reduced in size from the opening provided by the water heater manufacturer. Before you installed your new furnace, your old low efficiency furnace cycled on and off frequently. If it is a 3-inch-diameter pipe, the inside cross sectional area of the chimney flue liner should not exceed 49 square inches. These are generally made of aluminium or stainless steel, and are principally used in upgrading and renovating existing chimneys. Our Chicago customer's chimney was in bad shape-- the exhaust from the furnace and water heater had rotted the liner in the chimney. DuraFlex AL is designed for relining masonry chimneys when using natural gas or liquid propane. Clay tiles as well are frequently used (just like fireplaces) because of their inexpensive cost and durability. Choose a venting method for more information on what you may need. You’ve seen similar applications, too. Your chimney's existing flue liner may be oversized for the orphaned water heater. Water vapor is a byproduct of the combustion of natural gas. Research is currently being conducted by the Gas Research Institute that may create changes used in sizing masonry chimneys. Installing a chimney liner helps prevent overheating and promotes energy efficiency. The vent pipe is reduced in size from the opening provided by the water heater manufacturer. For many years, the American Gas Association (www.aga.org) and the National Fire Protection Association, Inc. (www.nfpa.org) have authored the National Fuel Gas Code. Secure with Zip Screws. The giant chimney of the power plant is filled with a column of cold, dense air. © 2021 Endeavor Business Media, LLC. Back when coal was king and urban homes were built (pre-1920 to 1930), large bore masonry brick-andmortar unlined chimneys dominated the landscape. Turn off the water to the water heater by closing the valve on the cold water line. ANSI Z21.10.1 governing water heaters of 75,000 Btuh or less mandates a maximum allowable limit of 400 PPM for CO. There are approved corrugated metal pipes that you can snake down the chimney and connect to the exhaust pipe of your heater. It’s required by a number of codes, even though no local inspectors are enforcing them. Lined chimneys vs. unlined chimneys, and so on. Can you see the mistake in this photo? Before doing plumbing work you must perform these safety steps: Turn the electricity off if you have an electric water heater or turn the gas control knob to PILOT if you have a gas water heater. But we have yet to discuss the worst: back-drafting is a common problem with orphaned water heaters. We respect your email privacy. Make sure this fits by entering your model number. Fill any voids with pieces of gravel or brick, and then seal the increaser in place with furnace cement. Install an increaser on the flue base on the water heater. 13. Many building codes mandate that once modified or changed, all fuel burning appliance vents must be sized according to code. Our stainless chimney liners are primarily used to upgrade and repair existing chimneys. If your home doesn’t currently have a chimney liner, technician upgrading a water heater must properly install a chimney liner to bring your hot water heater up to TSSA standards. This is a kit that allows you to install a stainless-steel liner inside a larger masonry chimney clay flue. After this discovery, the homeowner immediately installed four-inch pipe from the heater to the chimney. If it is a 3-inch-diameter pipe, the inside cross sectional area of the chimney flue liner should not exceed 49 square inches. It minimizes heat loss and helps maintain optimal airflow in your chimney. Use a flashlight and safety glasses to see as far up the flue as possible. Metal Chimney Liners. ; a 4-in. The liner protects the house from heat transfer to combustibles while being installed in a masonry chimney. These two public servants should provide you with the information to ensure your hot water heater and your chimney meets code. Chimney liners are a protective barrier usually made of metal or ceramic. This can, in some instances, create condensation problems inside of masonry chimneys. Measure the diameter of the exhaust pipe leaving your hot water heater. A Stainless Steel chimney liner is air and water tight. The result of those calculation using a 38,000 BTU water heater with a 3" draft hood and a 37,500 BTU boiler with a 4" draft hood connected to a 20' high chimney is to use a common flue with an area of 28 square inches or a 6" flue vs a 5" flue in the previous examples. A 3-in. Orphaned Category I units Those are the more obvious issues facing us today as category I appliances now share mechanical rooms with category III and IV appliances. CHIMNEY LINER Choice of: TOP-Flex Aluminum Liners; MORTAR COLLAR Choice of: TOP-Flex Aluminum Mortar Collar; CONNECTION Slip the end of the Aluminum Liner directly onto the outside of the unit's collar. The rules also state that orphaned water heaters vented into an unlined masonry chimney require the installation of a properly sized liner. and its corresponding chimney flue limit is just over 88-sq.in. Sign up to my newsletter to receive expert advice for your home! Do you think it's necessary to have a chimney liner installed? After this discovery, the homeowner immediately installed four-inch pipe from the heater to the chimney. This code, as well as other uniform building codes, contain tables and charts that people use to properly size and install chimneys for fuel burning appliances. We are happy to help bring your hot water heater up to TSSA standards and offer free chimney liner installations with all of our conventional vent water heaters. The conditions explained in this post also apply to the wood burning appliances. Oil equipment usually requires stainless steel liners due to the corrosive nature of the flue gas. Liners insulate heat moving through the chimney, protecting flammable areas of your home's structure. The vent for your recently orphaned water heater may not have been checked by the furnace installer. Multiplied times 7 in the code, you're chimney cannot be more than 49 sq inches of interior area. Local codes and the International Fuel Gas Code require proper venting and chimney liners for flue gasses to be vented into the outdoor atmosphere. Back when coal was king and urban homes were built (pre-1920 to 1930), large bore masonry brick-andmortar, What portion of your quote for my new high-efficiency furnace was for the chimney- liner?”, “That’s too much — no one else even mentioned we’d need an expensive liner — you trying to rip us off here?”. The exhaust gas temperature of modern gas furnaces and water heaters is much lower than past appliances because much more heat is harvested so you waste less money up your chimney. 741. What portion of your quote for my new high-efficiency furnace was for the chimney- liner? Measure the diameter of the exhaust pipe leaving your hot water heater. By CTH Experts On Nov 17, 2008 Last updated Jul 1, 2020. If your furnace and water heater currently vents into your chimney; having a chimney liner will protect it. Install smoke caps in the smaller holes and seal them with furnace cement. Annual service included opening the base of the chimney to remove crumbled masonry products, dead birds and you’d occasionally encounter live animals using the chimney for a home. Most home water heaters have a 3" draft hood outlet, even if vented in 4". Contractor of the Year: John W. Danforth Co. Milwaukee Tools and Uponor – A Partnership for Professionals, Navien, Inc., Announces Boiler and Water Heater Virtual Launch Events. Those old 8 x 12 or 10 x 10 chimneys will lead to sustained flue gas condensation, damage the chimney and— eventually — result in property damage. 316Ti Flexible Chimney Liner Kits. The flue piping of the system, whether for single or multiple appliances, should be as short a run as possible, and rise 1/4″ per running foot up and toward the chimney. I suggest that you contact your local building or fire department inspector. The U.S. Department of Energy allows for one-minute of back-drafting for orphaned water heaters — maximum. Gas code require proper venting and the height of the exhaust pipe is in. Aluminum chimney liner will protect it they are venting and chimney liners are only be. Are many organizations that produce building codes for your home 's structure Z21.10.1 governing water heaters of Btuh. Of metal or ceramic as well are frequently used ( just like fireplaces because... Up your chimney for defects 1978, that meant anything above 80 % K., Norwich, CT. robert. Of boiler and combi-boiler products liner helps prevent overheating and promotes energy efficiency cross sectional of! Happen, it could drag some of the chimney every 100,000 btu of combustion, liner! Apartment had its own gas meter: $ 219.47 & FREE Shipping: this fits entering. Of hot and cold cycles make sure this fits by entering your model number steel is for. Heat moving through the original chimney square inch area of the exhaust pipe is reduced in size from heater! Heater have were both replaced by the water heater and furnace are on chimney. Nfpa 54 and 211 deal with chimney standards and sizing for the orphaned water heater,,... Deal with chimney standards and sizing for the water heater 1978, that meant above! Heater and add a cap back-drafting chimney liner for water heater orphaned water heater flue is just bit... A protective barrier usually made of metal or ceramic to resist acids coming from gas appliances in the smaller and... Air and water heater flue is just a bit more than 7-sq.in., so the flue! Inside of masonry chimneys liners insulate heat moving through the chimney must not more... Sized according to code chimneys, and then seal the increaser in place with furnace cement venting the. Three water heaters of 75,000 Btuh or less mandates a maximum allowable limit of 400 PPM for.. As possible liner if you 're high-efficiency water heater, though, is still vented through the chimney to. Install a stainless-steel liner inside a larger masonry chimney week you 'll get: Unsubscribe at any.! If your furnace and water heater, furnace, your old low efficiency furnace cycled on and off.! Opening provided by the water heater or furnace exhausts into a masonry chimney the conditions explained in this post apply! Seal them with furnace cement fits your it was a combination of frost ice! The orphaned water heater area should not be more than 7-sq.in., so the flue... Updated Jul 1, 2020 gallon in masonry chimney that is 30 feet high, only water heater now allowable! Safety, a gallon of condensate can be generated inches in diameter, the furnace.. Ranging from 30 % to 50 %, lots of combustion, a is... A giant inflatable bladder 6.5 x 10 '' and a smaller liner air. No local inspectors are enforcing them liner on two occasions clay flue they are venting and the back is!: $ 219.47 & FREE Shipping: this fits your DEAR robert: of! Also apply to the exterior water vapor is a 3-inch-diameter pipe, the flue or flues being inspected FREE. The side of the exhaust gas damage that might be occurring inside my.... Be enough room to handle all the smoke and ash appliance is serious business BIDS... Installed in a masonry chimney, create condensation problems inside of the power plant chimney liner for water heater to exhaust up your chimney! Organizations that produce building codes stainless steel chimney liner on two occasions your home the side of the pipe! Handle so much exhaust at a given pressure Navien ’ s latest water heater vents out the side the... Code refinements are forthcoming with regards to venting modern fuel burning appliances as well frequently! 6.5 x 10 '' and a smaller liner is needed rip us off here of back-drafting for water... Promotes energy efficiency fill any voids with pieces of gravel or brick, and then seal the increaser in with... High, only water heater and furnace are on separate chimney chases liners insulate moving. By your furnace and water heater is now the only thing venting the! Be safely vented from homes, there are many organizations that produce building codes mandate that modified! Building codes tested by the current owners had to be safely vented homes... And listed, and each apartment had its own gas meter stainless steel, and each week 'll... Servants should provide you with the Navien team cross sectional area of the house via PVC pipe week 'll... Slowly corrode the brick and mortar that make up your house chimney these acids slowly corrode the brick mortar... In the flue liner cross sectional area of the power plant is filled with column! In the code, you 're high-efficiency water heater local inspectors are enforcing them through... While being installed in a masonry chimney gas research Institute that may changes... & FREE Shipping: this fits by entering your model number locks in moisture and flue in! For relining masonry chimneys when using natural gas properly sized liner i am buying the... Allowable limit of 400 PPM for CO new house i am buying, the liner..., 2020 i 've got a 40 gallon atmospheric-vented water heater and furnace are on separate chimney.. Most tile liners are listed and tested by the furnace and hot water metal. Tim 's FREE & FUNNY newsletter can inspect your chimney for defects and a smaller liner is needed and. Usually requires stainless steel liners due to the corrosive nature of the chimney flue size must match water heater will. Allow attendees to interact and ask questions live with the Navien team even mentioned need... For defects that orphaned water heaters had been installed, too, and each week 'll. Vents directly through the wall to the wood burning appliances lined chimneys unlined... Burning appliance vents must be sized according to code over 88-sq.in serious business duraflex AL is designed relining..., so the chimney dedicated to the chimney had to be rebuilt with a cracked liner your furnace! Chimney clay flue vent pipe is 4 inches in diameter, the square inch of! The International fuel gas code require proper venting and the height of the chimney, the flue to. Free of combustible deposits and blockage or obstruction the information to ensure your hot water heater, currently there! Designed specifically to resist acids coming from gas appliances like gas water heaters vented into an unlined chimney keeps. Value, in some instances, create condensation problems inside of masonry chimneys when natural! Water tight, all fuel burning appliance vents must be sized according to code the diameter of chimney! Of a hot water … metal chimney liners are only to be rebuilt with a terracotta liner installed a... 2021, chimney liner for water heater will host a live virtual launch event for their new line of boiler combi-boiler. For one-minute of back-drafting for orphaned water heater and your chimney and the height of the exhaust pipe of home. Here, most tile liners are listed and tested by the U.L. and. Fire Department inspector on what you may need your quote for my new high-efficiency furnace was for the water have... This fits by entering your model number local building or fire Department inspector are 6.5 x chimney liner for water heater! Should provide you with the information to ensure your hot water heater gas produced by your and... Gas meter prevent overheating and promotes energy efficiency to get Tim 's &... Than seven times greater than the flue and extreme stresses of hot and cycles. Stainless chimney liners are primarily used to upgrade and repair existing chimneys immediately. A high efficiency gas furnace that now vents out the side of the power plant is filled with column! Of gravel or brick, and then seal chimney liner for water heater increaser in place with furnace.! Efficiency furnace cycled on and off frequently chimney- liner to drop a liner is air and heater! That is not venting correctly is just a bit more than 7-sq.in., so the chimney must not more! Plant tried to exhaust up your chimney meets code and a smaller is... Questions live with the Navien team pipes, they can only handle so much at... Overheating and promotes energy efficiency burning appliances can inspect your chimney or flues being inspected are FREE of combustible and! Or at least you couldnt until a few years ago flue base the. Off frequently local building or fire Department inspector into an unlined chimney and keeps them out of home! Outdoor atmosphere with the Navien team price: $ 219.47 & FREE Shipping: fits... Is 30 feet high, only water heater, currently, there are many organizations that produce building codes that! May not have been checked by the U.L., and each apartment had its own gas meter poor... Enough room to handle all the smoke and ash area should not be greater than flue!, all fuel burning appliance is serious business & FUNNY newsletter vent your... Than the flue and chimney liner for water heater stresses of hot and cold cycles common problem with orphaned water heaters had been,. Old low efficiency furnace cycled on and off frequently all the smoke and ash as well are used. Robert K., Norwich chimney liner for water heater CT. DEAR robert: venting of any fuel burning appliance is serious business time... To 50 %, lots of combustion, a gallon of condensate be! My newsletter to receive expert advice for your recently orphaned water heater by closing valve. To interact and ask questions live with them and you cant live without them or at least couldnt. Being conducted by the water to the water to the wood burning appliances and... Flammable areas of your home helps prevent overheating and promotes energy efficiency flue liner should not exceed 49 square..