What is a Class A Chimney?

“Class A chimney” is a complete chimney system that does not require any masonry.  It is an independent unit and is designed for residential use and can be installed on the exterior or the interior (the preferred location) of the home. It is insulated with one inch of insulation and designed to vent almost any fuel.

If you need a new chimney, a double wall Class A chimney may be an excellent alternative to a masonry chimney.

What Do I Need?

classa_a_chimneyWe’ve had many customers ask us for stove pipe and after talking to them, we have found what they really wanted was chimney.  Stovepipe connects the appliance to the ceiling or wall where the Class A chimney is installed.   You need the insulating power of Class-A stainless steel chimney to go through the wall or ceiling all the way up past the roof (preferred location). Besides it being to code, it is the safest thing to do.

Please review the following link for great information about why the chimney should stay within the home. (click here)

Always keep in mind that all codes are set up for you to be safe in a “worse case scenario”. Worse case scenario for a chimney is a chimney fire. That single wall pipe turns cherry red during a chimney fire that burns around 2000 – 2500degrees F. Anything combustible within 16 inches of that glowing red single wall pipe can catch on fire, which would be your house.

Using single wall pipe also increases the chance for chimney fire because it collects much more creosote than does an insulated chimney. The colder the chimney, the slower the draft, which creates a build up of creosote) on the inside of the chimney. You may think that using single wall pipe is a cheaper alternative, but as many have found out, losing your home, or even a family member, due to using single wall pipe is a lot more expensive  than purchasing the right type of chimney in the first place.

Even though Uncle Joe has been burning his stove like that for years, sticking a single wall pipe out of a window and up to the roof is very dangerous. Codes call for an 18″ clearance to combustibles for single wall pipe, and for good reason. Even though that single wall pipe may work fine for a while, there is a huge potential for the unthinkable to happen which is why the clearances need to be met and why they are in the code books.

Most all… Class-A stainless steel chimneys have clearances down to 2″ to combustibles. Which means that even during a chimney fire, combustibles that are 2″ or more away from the chimney will be safe. Check out our Typical Chimney Installation Diagrams to get an idea how Class-A chimney is installed.  We use Excel Class A chimney (http://icc-chimney.com/en/excel#mc ) which has a clearance of 1”.

Quite a few of us handymen use alternate less expensive solutions for maintenance projects  around the home to some degree; some put tar on a roof instead of replacing a shingle, caulk a bad angle in some molding we installed, etc. But when it comes to venting an appliance which can be very dangerous, we need to stick to code. It is not something to skimp on.

What Does it Cost?

class a chimneyInterested in what it may cost to have a Class A chimney installed in your home?  Stop by or  give us a call today.  If you are a DO-IT-YOURSELFER then use the following link to figure what components you’ll need to purchase.