How much does a chimney flue cost?

Author: Miss Eden Predovic  |  Last update: Wednesday, April 30, 2025

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 to $3000 for the material depending on the specifics of the installation.

How much does it cost to replace a chimney flue?

Chimney Flue Replacement

Replacing a chimney flue averages $3,000 to $7,000. This is one of the most expensive chimney repairs.

How much does it cost to install a flue?

On average, your typical horizontal boiler flue will cost around £200 to install, including parts. However, if the work is being done as part of a new boiler installation, this figure will often be included in your overall price for the project.

Can you install your own chimney flue?

Installing a flue liner is NO job for a DIY'er. There are several considerations that must be answered before a new liner can be installed. First and foremost, the existing flue must be cleaned completely and inspected with a camera to determine the condition of the existing mortar joints.

How often should a chimney flue be replaced?

The average lifespan of a chimney flue liner is about 15 to 20 years. If you lived in your home 15 years or more you probably need to get the entire liner replaced to make sure it is up to code. If there is damage to your chimney flue liner your home is at risk for a serious home fire.

How Much Does a Chimney Liner Cost?

How long does it take to install a chimney flue?

A flexible liner can generally be fitted within one day, a twin wall system can take one or two days and a pumice lining system can take 4 or 5 days. To build a new chimney on an existing building will take two or three weeks depending on size.

How much does it cost to get your chimney swept?

Chimney sweep companies typically charge an average of $275 for a chimney cleaning service in the United States. Prices can range from $150 to $375 depending on the type and condition of the fireplace, your service area, and your profit goals.

Can a fireplace share a chimney flue with anything else?

A Heating System and a Fireplace

Some houses have both fireplaces and heating appliances, such as a furnace. Consider an aging house with a fireplace in the living room and a furnace in another room. The furnace and fireplace can use the same chimney flue.

How much does a chimney liner cost?

The cost of a chimney liner varies. It will depend on the type of material and the size and shape of your flue, but the cost generally ranges between $2,500 and $5,000. When considering its price, also consider its durability, maintenance, and repairs.

Can I sweep my own chimney for insurance?

Most policies will require a professional chimney sweeping once a year. If you ever need to make a claim, having an in-date chimney sweeping certificate shows that you actively maintain your home.

How much is a new flue?

A simple horizontal flue installation would cost around £200 including parts and labour. Basic flue kits for most boilers are around £100. The rest of the cost includes labour to drill through brickwork and make it right.

How much does it cost to rebuild a chimney flue?

The cost to fully replace a damaged or non-functional chimney flue could be anywhere from £800 to £1,500, depending on the size of your chimney and your chosen lining material. A specialist will be able to advise you on which of the following would work best for your chimney: A pumice liner, usually around £900.

What is the difference between a chimney and a flue?

A chimney is a passage way for combustion byproducts to travel up that runs from a fireplace or stove up to the top of a house. It is usually made of stone or brick. Inside the chimney is a flue. In most cases, a chimney flue is made up of a steel chimney liner or ceramic chimney tiles.

What is the most expensive chimney repair?

Simple chimney repairs cost $455 on average, with prices ranging from $160 to $750. More complex chimney problems, however, may necessitate brick repointing, liner repair, or even a partial or full chimney rebuild. In those cases, prices reach up to $15,000 for a total chimney replacement.

What is the lifespan of a flue?

Stainless steel flue liners generally last for 15 to 20 years (though low quality liners may not even last for five). Good quality stainless steel chimney liners often come with a lifetime warranty.

How much to install a flue?

On average, you're looking at around £1,150 to install a new flue in an existing chimney. On the other hand, you may not currently have a chimney at all, especially if you live in a new build. In this case, you'll usually need to install an external twin-wall flue. This could cost you an extra £2,550.

Is it OK not to have a chimney liner?

Chimney liners help maintain an optimal temperature for the exhaust gases to ensure their safe exit from your home. The absence of a liner can cause the flue gases to cool down too quickly, resulting in condensation and eventual damage to the chimney structure.

What is the cheapest way to line a chimney?

Aluminum. Aluminum chimney liners are going to be the most economical option for a chimney liner. The aluminum chimney liner can only be used to vent a natural gas appliance that has an efficiency rating of 83% and under. This type of liner does not usually include a warranty.

Can a chimney flue be replaced?

Homeowners typically buy a replacement chimney liner after being informed by a chimney sweep that it's needed. Liners are expensive, and, really, it's good practice to be wise about any spending to be done. So, it's recommended that you don't just blindly agree to buy a new chimney liner.

How do I know if my chimney is shared?

Many chimneys are built on party walls, and it's commonplace for chimney stacks to be shared. Many party wall chimneys tend to be 'back to back' – in other words, the way it was originally constructed on your neighbour's side will be the same as on your side. They will normally be a 'mirror image' of each other.

Can you use a chimney without a flue?

Lots of people will say you need to build your chimney with a clay flue for purposes of heat, thus keeping the heat off the cinder block. I say, if your chimney opening is big enough, not restricting the smoke and heat, you don't need a chimney flue.

How much should I expect to pay for chimney sweep?

On average, for a standard chimney sweep, you can expect to pay between £60 to £90. However, for more complex jobs or for chimneys that haven't been cleaned in a long time, the price can rise to around £100 to £120. Get a few quotes from different chimney sweepers to ensure you're getting a fair price.

Do landlords pay for chimney sweep?

Some areas may have specific requirements for inspections and maintenance. Educating Tenants- While landlords are generally responsible for chimney maintenance, it's important to educate tenants about the safe and proper use of the fireplace, if applicable.

How often should a chimney be cleaned?

The NFPA recommends that all chimneys be cleaned and inspected annually because if the system is compromised, it creates a fire hazard. It's best not to merely assume that a chimney system is in good working condition, no matter the circumstances.

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