Which connector should you use when attaching a flue pipe to the rear exit of a woodburner?

Many wood-burning stoves come with the choice of attaching the flue pipe to either a top or rear flue exit. All things being equal, it’s best for a flue pipe to go up in a straight line in order to achieve the best draw and most efficient burn from your woodburner.

But in some instances it will make sense to use the rear exit. Circumstances when the rear exit might be better include installations in which the stove is sitting in front of, rather than directly under, a chimney, and installations in which the flue pipe is unable to go straight up because something is blocking its path.

So, how do you go about using the rear flue exit as effectively as possible?

We would recommend using a 90-degree tee section with door when flueing out of the rear outlet.

Using this part allows the middle joint of the tee to connect to the rear outlet. Its 90-degree angle gives room for manoeuvre when fitting the stove and if access is ever needed.

A regular section of flue pipe can be connected to the top joint. Any debris will collect in the lower section of the tee, which avoids blockages in the important section of the flue system. The door provides easy access to empty the debris occasionally.

There may be some cases when this isn’t the best approach, but we would suggest it as the best approach for the vast majority of homes.

The 90-degree tee section with door is available in 4-inch, 5-inch and 6-inch versions, so you can select the diameter suited to the size of the rear outlet on your stove.

You can buy the correct diameter for your stove here:

4 inch 90 Degree Tee Black Flue Section with Door
5 inch 90 Degree Tee Black Flue Section with Door
6 inch (150mm) Black Twin Wall 90 Degree Tee (with Plug) Inc Locking Band

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