Do I need a chimney liner for gas furnace?

Do I need a chimney liner for gas furnace?

For optimal use and safety, a liner is needed when installing a new heating system, furnace, boiler, or water heater. Local codes and the International Fuel Gas Code require proper venting and chimney liners for flue gasses to be vented into the outdoor atmosphere.

How long does a gas flue liner last?

15 to 20 years
The average lifespan of a chimney liner is 15 to 20 years. After two decades you will probably need to get the entire liner replaced to make sure it’s still up to code and not a serious fire risk.

What size flue liner do I need for a gas fire?

The type of fireplace will determine the size of flue liner for example an open fire fireplace will require a flue liner that ranges in diameter from 8 to 10 inches. However, a gas fireplace will require a much smaller flue liner – you are able to use a flue liner that is only 5 to 6 inches in diameter.

Do I need a chimney liner for a 80 gas furnace?

Older, less efficient furnaces do not need a chimney liner. More efficient furnaces, such as those at 80% AFUE, use the chimney for ventilation as well. Conversely, the steam that they release has a much lower temperature at only 400 degrees Fahrenheit. Hence, the entire space of the chimney is not necessary.

How much does chimney liner cost?

The average cost to have a chimney lined by a professional is going to be about $2500. Depending on the type of chimney liner, it could cost up to $10,000. The average DIY chimney liner installation is going to cost about $750 and could cost as high as $3000 for the material.

How do I know if my chimney needs a liner?

One of the most common signs that you need a chimney liner is when you notice that your chimney walls are deteriorating at a faster than normal pace. When your liner is not in proper working condition, the heat or condensation will damage your brick and mortar at a higher rate.

Can you have an open fire with a flue liner?

Chimney liners are safe if they are installed and used correctly. If you are intending to use an open fire, wood burning stove or gas fire in your home it is important to follow the safety instructions provided by the manufacturer. For example, chimney liners still need to be swept regularly.

How much does it cost to install a stainless steel chimney liner?

The average cost of a stainless steel chimney liner is around $1,980 when installed by a local chimney professional. For do-it-yourself homeowners, expect to pay around $625 for a ready to install, 6″ x 25′ foot flue liner kit and DIY installation.

Can I fit my own flue liner?

Can I fit a flue liner / chimney system / stove myself? Yes. Most of our customers fit their stove and or flue liner / system themselves. You do not have to use a professional installer if you are competent to do the work yourself.

How do I know what size flue liner to use?

When sizing a fireplace for a square or rectangular liner the 1/10 ratio should be used. This means that the area of the liner should be 1/10th of the fireplace opening. So in the example above where the fireplace had 1080″ of area, it should be divided by 10 which means a liner with 108″ of area is needed.

What happens if you don’t have a chimney liner?

Chimney liners create a clear and direct path for smoke to exit your home safely and efficiently. Without one, your chimney walls will eventually deteriorate and contaminates will be able to seep through any cracks.

How much is a chimney liner?

Why do I need a chimney liner for my boiler?

Over time, this excessive moisture can cause the flue to deteriorate. The easiest fix for this is to install a stainless steel chimney liner. But not just any liner will work for your appliance. An undersized chimney liner for a boiler or furnace will cause a limit switch to trip, turning the appliance off.

Do I need a furnace liner for my home?

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. Liners can help direct gases up and out of your flue, so your system works better and faces less decay and deterioration. You deserve to get the most from your appliance!

How do I know what size chimney liner I Need?

The final measurement we need to determine the correct size liner is the height of the chimney. Measure from the top of the chimney to the top of the thimble and add 3.5″ to accommodate the liner clamping to the top plate. Next, measure the exact inside flue measurement that you will be installing the liner down.

What causes condensation in a chimney flue?

If it is, it’s likely caused by excessive condensation from a gas furnace or oil boiler. If the flue size is too large for an appliance, it will cause the exhaust gas to condense more quickly creating a lot of moisture in the chimney. Over time, this excessive moisture can cause the flue to deteriorate.