A CSIA Certified Chimney Sweep
Can properly evaluate size, recommend and install the appropriate chimney liner for your home heating equipment.

A Final Point Concerning Equipment Performance and Efficiency
A New chimney lining system for your oil-fired appliance can improve its performance and increase the life
of your chimney. Increased oil burner efficiency means less oil is required to heat your home. This reduces
your fuel bill.

Call a CSIA Certified Chimney Sweep”, you and your family deserve the best.
Visit the Chimney Safety Institute of America’s website (www.csia.org) or call (800) 536-0118 and we’ll help
find a certified chimney sweep near you.

Chimney Safety … because it’s where you live.

2155Commercial Drive
Plainfield, IN 4668
(317)837-5362
office@csia.org
www.csia.org

The oil burner technician should service your oil-fired appliance after each heating season. When he removes the connector pipe and opens the cleanout door, he can find one or more of the following:

• Small particles of the chimney liner that have fallen to the base of the chimney.
• No chimney lining.
• A cracked or broken flue tile.
• A wet chimney

These are just some of the problems that can cause poor chimney performance. Most of them can be corrected by relining your chimney.

Old Appliances
The long-term effects of clay tile flue liners venting oil-fired appliances can be gradual deterioration of the liner
due to the acidic nature of the chimney residue. This process can occur over many years. The liner walls can
soften and flake off material opening holes through the liner walls. If this happens, the flue must be relined.

New Appliances New high efficiency oil-fired appliances require smaller flue sizes than older units. Where an
old unit mayrequire an eight-inch flue, the replacement unit’s installation instructions may call for a five-inch flue. 

This is a 60% reduction in flue size. Couple that with lower flue gas temperatures of new units and the flue
size becomes much more critical to the proper operation of the present day oil-fired appliance.

In cold, oversized masonry chimneys, the less-hot flue gases of modern appliances quickly expand and cool
even more.

Draft is drastically reduced because it depends upon the buoyancy of the hot flue gases. The cooler the gases become, the slower they move up the flue and the more the draft is reduced. This will reduce an appliance’s efficiency and increase fuel consumption. The longer the flue gasses remain in the flue, the greater the risk of leakage into the home.

Water Vapor, a normal be-product of combustion, condenses on the cool internal surfaces
of over-sized flues. This problem is worse inexterior chimneys and cold climates.
The resultingmoisture can be absorbed by the chimney and transferred through the walls.
It may cause paint to peel, and wallpaper and plaster to fall. In winter, wet chimneys
experience numerous freeze/thaw cycles causing bricks and clay tile liners to spell or
flake, mortar joints to erode, and water leakage at the bottom of the chimney.

Dangerous carbon monoxide gas can be forced into your home through open mortar
joints, cracked flue liners and flues blocked by debris.

Deterioration of the flue liner can occur when venting oil fired appliances. Chemical
compounds such as sulfur residues from the oil and chlorides from the laundry area,
when combined with water, form highly aggressive acids capable of causing
considerable damage to flue tiles in masonry chimneys.

How can these problems be solved?
Retrofitting a chimney with a UL Listed, properly sized and properly installed chimney lining system is the most
important and easiest way to prevent these problems.

A properly sized chimney lining system will insure correct draft by preventing the
flue gases from expanding and cooling more than they should.

Properly-sizing a chimney liner will greatly reduce condensation within the venting system. The hot
and buoyant flue gases will remain hot, exit the flue quicker, cool less and be much less likely to condense
on the chimney or liner walls.

By using a watertight flue liner any condensation that might form is contained within the liner, thereby avoiding
further damage to the chimney from freeze/thaw cycles and corrosion from the highly acidic condensate.

AUL Listed., stainless steel flue liner or a UL Listed, cast-in-place chimney lining system designed to vent
the flue gases of oil-fired appliances should be installed.