Company Blog

Why Your Oil or Gas Heating Appliance Needs a High-Performance Chimney Liner

A chimney liner is one of the most important components of your fireplace and chimney system because of its functions. A high-performance chimney liner will protect your home from extremely high temperatures igniting a fire within your woodwork, protect your masonry chimney from the toxic byproducts of combustion, and provide a correctly-sized flue to your heating appliance to improve the draft. Particularly if you have an oil or gas heating appliance, you need a durable stainless steel chimney liner due to the acidic properties of the combustion gases. Many times All Seasons Chimney will see problems with cracks and gaps in older clay tile flue liners when we inspect chimneys of oil and gas heating appliances. These cracks and gaps can be hazardous as they can allow poisonous gases like carbon monoxide to enter your home. We have also seen problems with the flue sizes being too large for these types of appliances. We would like to tell you more about why your oil or gas heating appliance needs a high-performance chimney liner by sharing with you some information from the Chimney Safety Institute of America (CSIA).


Why is the flue size such an issue for oil and gas heating appliances?

The newer oil and gas heating appliances require smaller flue sizes than the older units did. Typically, there will be about a 60% reduction in the flue size. Additionally, these newer appliances have lower flue gas temperatures, and this can add to the problem of the flue being too large for the appliance. Draft can be drastically reduced because the cooler the gases become, the slower they move up the flue. This can cause your oil and gas heating appliance to work ineffectively and to use more fuel to provide sufficient heat. Flue gases remaining inside the flue for too long can also be hazardous as it increases the risk for leaks. Another major problem that can occur with an improperly-sized flue is the condensation of water vapor. The moisture that results can be absorbed into the chimney and transferred through the walls of your home. This can cause your paint and wallpaper to peel. Even worse, the masonry materials of your chimney can be severely damaged during the freeze/thaw cycles of winter, and you can have spalled bricks, eroded mortar joints, and water leaks at the bottom of your chimney.

How can All Seasons Chimney solve this flue sizing problem?

The best way we can solve this issue is to retrofit your chimney with a properly sized and installed UL Listed stainless steel chimney lining system. This will help your draft by keeping the flue gases from expanding and cooling more than they should. Condensation within the venting system will also be reduced with a properly sized high-performance chimney liner. We will guarantee that your liner system is watertight so that any condensation that should form will remain contained within the liner to avoid further damage to the masonry from the freeze/thaw cycles and corrosion from the extremely acidic condensate.

To improve the performance of your oil or gas heating appliance and prolong the life of your chimney, contact All Seasons Chimney to learn more about our chimney liner installation services. Our CSIA-certified technicians will evaluate, size, recommend, and install the appropriate chimney liner for your heating appliance.

We Clean and Install Boiler Liners

The majority of homes in the United States are heated with either a furnace or boiler, and boilers are commonly seen in the Northeast, including All Season Chimney’s service area. The difference between a furnace and a boiler is that furnaces heat air and distribute this heated air throughout a house via ducts, and boilers heat water and provide either steam of hot water to heat the home. Steam heats a house via pipes to steam radiators, and hot water heats via baseboard radiators or radiant floor systems. If you have an older furnace or boiler, you have a naturally drafting chimney through which the combustion gases exit your home using only their buoyancy combined with the height of the chimney. Many homeowners believe that since there is no fireplace, there is no need for maintaining a chimney of a boiler or furnace. This is not exactly true as these chimneys also need to be taken care of just like the chimney of a fireplace. Our chimney sweeps at All Season Chimney can take care of your boiler’s chimney as we clean and install boiler liners, which are a necessity for boilers’ chimneys. We would like to share some information with you from the U.S. Department of Energy (DOE) to tell you why it is so important to maintain the chimney of your boiler.


What will All Seasons Chimney perform during a maintenance check of my boiler’s chimney?

When one of our certified chimney sweeps visits your home, he will do the following maintenance tasks:

Check the condition of the vent connector pipe and chimney.

Over time, parts of the venting system may become damaged or deteriorated. Our sweep will look for any damage or other problems.

Look for any blockages that may be present in your chimney.

If there is a blockages in your chimney, it could lower the heating efficiency of your boiler.

Clean and examine the condition of the liner of your chimney.

Just as the venting system, the liner of your boiler’s chimney can deteriorate over the years. Quite possibly, the chimney may not even have a liner. If the liner is damaged beyond repair or if there is no liner, we can reline the chimney with a lifetime-guaranteed stainless steel liner.

If my boiler system needs to be replaced, does my chimney liner need to be replaced as well?

When you replace your old boiler with a new one with an efficiency rating of 80% or higher, your chimney needs to be prepared to handle the higher risk for deposits of acidic condensation droplets that comes with these heating appliances. All Seasons Chimney can size a new stainless steel liner to fit both your new boiler and the combustion water heater, if present. If a chimney is larger than the heating appliance and/or water heater, you can experience problems with condensation and inadequate draft. We want your new boiler to be as efficient as possible, and installing a custom-sized liner is the best way to get the most out of your new heating appliance.

If you have an old boiler, contact All Seasons Chimney today. We will be happy to clean its chimney liner as well as examine it to see if it needs repairs or replacing.