Do I Need A Chimney Liner For A Gas Furnace

Liners can help direct gases up and out of your flue so your system works better and faces less decay and deterioration.

Do i need a chimney liner for a gas furnace. The liner size is the number one factor for the appliance to burn properly. Choosing the correct size liner for your appliance is crucial to ensure your appliance or stove is running properly. When connecting a new regular type known as category 1 type gas appliances furnace water heater with efficiency slightly below 83 old chimney flue size might need to be decreased with a new liner. The chimney liner should never be undersized for any appliance especially to accommodate insulation around the liner.

This is extremely important and serves various purposes properly sized chimney flue. A chimney professional can answer your questions and schedule an inspection for your home. Homeowners with gas or electric inserts most likely do not need a new liner because those types of fuel don t produce enough heat to damage a masonry chimney. I would not use one if it wasn t lined.

A fireplace chimney should always be lined. When hot combustion gases enter the chimney they don t lose much heat they re still hotter than the surrounding air. One for an oil furnace it s nice if it s lined. The metal liner also ensures a seamless connection between the exhaust pipe and the chimney itself.

If going to a smooth wall liner it will additionally improve your draft by up to 20 for gas and up to 15 for oil burning appliances. What type of furnace do i have. That being the case they easily vent out of the chimney and away from the home. Without a chimney liner corrosion can cause your chimney to deteriorate and allow harmful gasses such as carbon monoxide to seep through into your living space.

If it is a high efficiency 90 afue and above these systems have a completely separate ventilation system apart from the chimney so a chimney liner is not necessary. Not so with the other chimney. If you have a newer home with a skinny metal chimney flue these are typically already small enough for higher efficiency furnaces. A stainless steel chimney liner that is properly sized for the stove furnace or fireplace will maintain or improve the venting performance draft.

Draft efficiency 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. I mean my house has got had an oil furnace for many years and never had a lined chimney. If it is older and not very efficient you most likely do not need a liner. If you have an older home with a wide brick chimney you.

A properly sized chimney liner. It s not 100 percent required all the time.