Products
Liners
What is a liner?
When a chimney is built, very frequently clay tiles are used in the chimney to vent flue gases, the products of combustion. After a period of time, it is possible that the clay tile will begin to deteriorate and need to be replaced. At this time, the installation of a new liner is normally recommended. See chimney diagram.
What does a liner do?
A liner should keep the by-products of combustion from entering the home.
What kind of liner do you offer?
Aluminum – An aluminum liner can be used to vent category 1 gas appliances with A.F.U.E. of 83% or lower. In many cases, especially when only water heaters are vented into masonry flues, the gas appliances are vented into oversized flues. By relining the chimney with an aluminum liner you can reduce the condensation problems and improve the performance of the appliance.
Stainless steel / corrugated – M-flex 316 is designed to reline existing chimneys or be used in new construction. It’s corrugated construction allows for expansion and contraction during the heat up and cool down periods. This liner would be used in standard furnace flues and fireplace flues installations.
Stainless steel / smoothwall – M-flex 316 smoothwall is used when relining furnace flues when the flue is too small for the proposed BTUs. The smooth design adds back the 20% drag factor lost in traditional corrugated liners. This comes in very handy when venting multiple appliances and limited flue space.
For more information, please visit our Liner Page.
Raincaps
One of the many reasons for having a
raincap installed by Boston's Best Chimney.
Raincaps or chimneycaps sit atop the chimney and have several functions. The first is to keep material such as leaves, broken branches, birds from entering the chimney and causing the chimney to become blocked.
A blocked chimney will keep by-products of combustion from properly exiting the chimney and, should they enter the home, can be harmful.
A second function is to keep sparks from getting out of the chimney and landing on combustible materials where a file could start.
This function is most important for fireplaces and wood stoves. A third function is to keep various animals, such as raccoons, from nesting in the chimney. Nesting animals not only create the possibility of a blocked chimney, but the possibility that the animal will enter the home.
We offer a variety of raincaps: stainless steel (also available in black), copper (to add to the appearance of your home), and custom made.
For more information, please visit our Raincap page.
Dampers
There are two locations for a damper. The Throat Damper is placed in the throat of the chimney, just above the firebox; the Top Sealing damper is placed on top of the chimney and operated by a mechanism that descends into the lower part of the chimney.
Both dampers are offered by Boston Best Chimney and we are also able to replace a throat damper (see Throat under Firebox Assembly in the diagram on the right) with a top sealing damper which goes at the top of the chimney.
Exhausto fans
A fan set atop the chimney to help the chimney draft better. This is frequently a solution to problems caused by smoke entering the home.
Cleanout Doors
A small door which gives access to the area of the chimney where ashes or soot collect. By installing a cleanout door, subsequent cleanings are accomplished more quickly. See chimney diagram.
Ash Dump Doors
A door in the firebox area of a fireplace. The door allows the swift removal of ashes into an area called the Ash Pit and located below the hearth. See chimney diagram.
Clay Pots
Somewhat similar in function to raincaps, they sit atop a chimney and add a decorative appearance.
European Copper Pots
Somewhat similar in function to raincaps, but made of copper, they combine the functionality of clay pots and durability of metal.
Vacu-stack
Used primarily for smoke problems caused by wind related back-puffing into the home.
