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Chimney Liner Installation Cost

Chimney Liner Installation Cost

National average
(round stainless steel liner)
Low: $1,000

(round aluminum chimney liner)

High: $7,000

(cast-in-place liner for round flue)

Cost to install a chimney liner varies greatly by region (and even by zip code).
Get free estimates from chimney, duct and vent cleaning contractors in your city.

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Chimney Liner Installation Cost

National average
(round stainless steel liner)
Low: $1,000

(round aluminum chimney liner)

High: $7,000

(cast-in-place liner for round flue)

Cost to install a chimney liner varies greatly by region (and even by zip code).
Get free estimates from chimney, duct and vent cleaning contractors in your city.

The average cost to install a chimney liner is $1,800 - $2,500.

How Much Does It Cost to Install a Chimney Liner?

For decades, federal and professional safety organizations have recommended installing a liner in your chimney as a protective measure. Chimney liners provide an extra layer of fire protection and reduce corrosion on the chimney walls. As an extra benefit, chimney liners improve efficiency of appliances as a way to reduce utility costs.

The average cost to install a chimney is $1,800 - $2,500, with the average customer paying $2,000 for a round, stainless steel chimney liner with a 6” diameter.

Chimney Liner Costs

Chimney liner installation costs

National average cost

Average range$1,800 - $2,500
Minimum cost$1,000
Maximum cost$7,000

Cost Factors

Different factors determine the final cost of a chimney liner installation project. The type of liner needed is the largest determinant, but costs may also change if you have a chimney that isn’t a standard size and shape, or if you reside in a multi-level home.

  • Size of the chimney. Standard liners constructed from stainless steel and clay are sold at prices quoted per foot. Measurements needed to purchase the right sized liner are usually the diameter and length. Six to eight inches is the standard diameter for most round chimney openings. To calculate the length, you would measure from the chimney crown to the thimble where the liner would enter the wall to connect to an appliance. Stainless steel chimney liners will typically start at $55 per foot, while clay chimney liners start at $15 per foot.
  • Roof height. The type of home that requires the chimney liner also factors into the total project cost. If the roof is difficult to access due to increased height, extra expenses are likely to include heavy equipment rental like a lift. The average cost to rent a lift is $350 per day.
  • Roof pitch. The roof pitch also affects the overall cost of a chimney liner installation project. When a roof has a steep pitch 1, safety precautions must be taken to protect the installers, increasing the project’s time requirements. Instead of four to six hours for total installation time, the project is likely to take closer to eight hours for completion. This increases labor costs by approximately $150 to $300.
  • Total number of appliances. The number of gas and vented appliances using the chimney affect how much a chimney lining project will cost. All appliances attached to the flue 2 need to be fitted and sealed after the liner is installed. This increases the price due to extra labor hours and additional materials needed for sealing. To accommodate multiple appliance connections, you can expect to pay around $200 more for the job.
  • Age and condition of the chimney. Chimney liner installers assess the condition of the chimney before installing a new liner. The chimney needs to be sound to avoid any structural problems while the installation is being completed. As an example, if the chimney crown is badly damaged, expect to pay an average of $900 or more to fill cracks and apply sealants. An older chimney may require a partial or full rebuild with costs starting at $2,800 or more for some brick types.
  • Shape of the chimney. Chimneys with bends and offsets cost more than straight ones. These types of chimneys often require a cast-in mortar 3 liner. A cast-in mortar liner is installed via an inflatable rubber bladder. Besides accommodating oddly-shaped chimneys, cast-in mortar liners are permanent options that improve the structural integrity of older chimneys. Materials are very expensive with this type of chimney, with costs of about $225 or more per foot of cast-in liner.


Before installing a new liner, your installer is likely to provide a few recommendations. Most importantly, homeowners should schedule a chimney inspection and chimney sweep prior to the installation date. Keep in mind that, depending on what type of chimney inspection you have done, a basic sweep may be included in the cost. The average cost of a Level 2 chimney inspection with basic sweep is around $300. This type of inspection includes a visual assessment of the chimney and surrounding areas. Video equipment is typically used to evaluate the flue and the structural integrity of the internal areas of the chimney. Before the chimney is inspected, it is swept from the roof down, with all debris vacuumed away to allow for easy scanning for issues.

To prepare for a chimney liner installation appointment, you should also clear out any potential items that block access to any appliances connected to the chimney. Installers need to move freely around the appliances to install the liner and any fittings. Although chimney liners are not usually installed in the colder months, remove any leaves, ice, or snow from the roof if they are present.

Types of Liners

The installer has several options when choosing what type of liner to install in your chimney. All liners have both advantages and disadvantages.

  • Rigid. Rigid types of liners are usually less expensive and work with standard chimney builds. Rigid liners work best with chimneys without offsets and bends. Rigid liner kits cost upwards of $400.
  • Flexible. Flexible liners may have a slightly higher cost than rigid types, but these liners are able to accommodate chimneys with certain design features such as offsets and bends. Expect to pay a minimum of $600 for flexible chimney liner kits.
  • Single-wall. Single-wall liners are considered a very economical choice when selecting a new liner. These liners are often made of stainless steel and are flexible enough to easily install by fitting past the damper. Single-wall liners are more difficult to clean and are considered less durable. Single-wall liners have a similar price point as rigid liners, with kits starting at $400.
  • Double-wall. A double-wall liner has a smooth inner wall and a corrugated outer wall. Double-wall liners have less creosote buildup and increase drafts by approximately 20 percent. Double-wall liners are associated with improved appliance efficiency. Double-wall chimney liners usually cost $650 or more for the kit.


Compare materials before choosing the best type of liner for your home. Although economical choices are available, some liners have prolonged lifespans with their higher upfront costs.

Material typeProsCons


$15 per foot


Little maintenance

Long lifespan of 50+ years

Increased labor costs

Difficult to retrofit

Vulnerable to damage from heat


$18 per foot


Low installation costs

Only appropriate for gas fireplaces

Susceptible to corrosion

Low lifespan of 5 years

Stainless steel

$55 per foot

Highly durable

Easy to install

Available in rigid and flexible types

High fire rating

Long lifespan of 20+ years

More expensive than clay/aluminum

Susceptible to corrosion


$180 per foot

Highly durable

Easy to install

Good choice for damaged/old chimneys

Long lifespan of 20+ years


Specialized installation required


$225 per foot

Highly Durable

Protects against heat and corrosion

More reinforcement for older chimneys

Long lifespan of 50+ years


Extra labor and equipment required


Chimneys come in different shapes, but many have a round flue. There are different-shaped liners available to fit the exact shape of your flue—including round, oval, square, and rectangular. Companies are starting to make flexible-shaped varieties that work with flues that are both standard and non-standard shapes. However, you should always consult with an installer before choosing the shape of your liner. Even if you have an oval flue, a round chimney liner may still work. Round liners are preferred by installers due to ease of installation and cost-effectiveness.


The U.S. Department of Energy recommends adding insulation to your chimney liner to maximize fireplace and chimney efficiency. Insulation improves the performance of the chimney and protects masonry work. To add insulation, liners are wrapped prior to installation or the insulation is poured down the chimney after installation into the space between the flue and liner. Foil insulation is commonly used along with retractable mesh. Clamps secure the insulation at the top and bottom of the chimney. Cost to install insulation for a stainless-steel chimney liner 2 will be around $150 to $200.


Due to the complexities of installing a chimney liner, the work is best done by a professional. Chimney sweeps, chimney service companies, and fireplace service companies are usually the types of professionals used to install new liners. Professionals first assess your chimney and note any type of repairs or structural issues that need addressing prior to installation. Based on the age of the chimney and current condition, a professional can outline what types of liners work best for your chimney and the benefits you can expect after installation. Talk to the installer about warranty coverage for the new liner and ask about maintenance recommendations. Although a follow-up visit may not be required, the installer may need to return if there’s an issue with fit or accessibility during installation.

The average labor cost for a chimney liner installation is between $800 and $1,300. Most chimney liner installations can be done in a day for a single-family home with a straight flue and single appliance connection. The project takes longer for chimneys set on very tall buildings or homes with a steep roof. If the chimney liner is being insulated or repairs are required, this increases the timeframe too. Chimney liner installers can charge an hourly rate—typically between $75 to $150.


Chimney liner maintenance prolongs the lifespan of the liner. With proper care, a chimney liner can last decades. The most important part of maintenance is annual cleanings and inspections. Hire a chimney sweep at least once a year to remove creosote from the liner and check for any signs of damage. If there are any cracks or holes in the liner, repairs may be needed. Although once a year is adequate for professional inspections, homeowners should check for creosote buildup every two months during the heating season. Use a flashlight to check for signs of creosote buildup.

Another part of maintenance is having the liner inspected before installing a new appliance. The inspector can let you know if the liner is appropriate for use with the new appliance. Some liners won’t fit correctly into the appliance and may need additional connections to work.

Energy Efficiency

Chimney liners improve efficiency by decreasing creosote buildup and increasing drafts. Drafts improve combustion rates and, in turn, increase heating efficiency. Liners with insulation only increase the efficiency of the appliance since they provide an extra layer of protection and prevent moisture build-up.

Additional Considerations and Costs

  • Permits. They may be required by your local or state government before having a new chimney liner installed. Your installer can submit applications on your behalf. Permit applications typically have a fee of at least $25.
  • DIY. Chimney liner installations are not a DIY project. To install, the roof will need to be accessed which poses a safety hazard. Inexperienced installations also could lead to potential hazards such as fires and carbon monoxide exposure.
  • Old chimneys. Older chimneys may not have previously had a liner installed. However, for safety reasons, the Chimney Safety Institute of America recommends all chimneys now install a flue liner to optimize performance and safety.
  • Replacement. Replacing an old liner increases the price of installation. The chimney installer will need to remove the old liner and dispose of it. The type of liner determines how much it will cost to remove. As an example, metal types may just be pulled out, but more permanent types such as clay tiles require extensive labor hours and could cost $2,000 or more for removal.
  • Inspection. Chimney inspections are recommended within six months after a new liner is installed. Homeowners should arrange to have at least a Level 2 inspection performed.
  • Warranty. Warranty coverage of the chimney typically depends on what type of material was used. As an example, aluminum chimney liners usually have a very short timeframe of just two years. Stainless steel chimney liners most often have a warranty period of ten years or more, as long as regular inspections and cleanings are performed.


  • What is a chimney liner?

A flue liner is a protective layer inside your chimney made from materials such as metal, clay, or ceramics. Liners are meant to act as a conduit for the heat traveling through the chimney to assist with the release of combustibles into the outdoors. Chimney liners also protect the walls of the chimney from corrosion and structural damage.

  • Do you really need a chimney liner?

To reduce chimney fire risk and improve heating efficiency, a chimney liner is highly recommended. The chimney liner helps limit heat transfer and reduces overall creosote buildup. Masonry work inside the chimney is also protected through the liner.

  • How is a chimney liner installed?

The process of installing a chimney liner depends on the type used. Some liners are fed up through the flue and then secured with sealants and clamps. Other types are poured in like cement. Clay tiles are stacked on top of one another as a way to install a clay chimney liner.

  • How much does it cost to build a new chimney?

The average cost to build a new chimney is between $60 and $95 per linear foot.

  • How much does it cost to install a chimney liner?

Stainless steel liners are the most popular type of liners used for chimneys and will cost around $1,800 to $2,500.​

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Remodeling Terms Cheat Sheet

Definitions in laymen's terms, cost considerations, pictures and things you need to know.
See full cheat sheet.
1 Steep pitch: Pitch of a roof having a vertical rise of 3 inches or more for every 12 inches of horizontal run
glossary term picture Flue 2 Flue: A duct or pipe through which exhaust gases from a fireplace, stove or boiler are released to the outdoors
glossary term picture Mortar 3 Mortar: A mixture of Portland cement or lime or a combination of both, sand, and water used to bind bricks, stones, and concrete masonry units together

Cost to install a chimney liner varies greatly by region (and even by zip code). To get free estimates from local contractors, please indicate yours.

Black metal roof with chimney and blue sky in the background

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