Deflector on the chimney pipe to improve draft: is it necessary or not? The dark side of the deflector

There is a great demand, which means there will be offers. There are so many types of deflectors on sale that your eyes run up. This part is not for the beauty of the pipe, but for stabilizing the draft, improving the efficiency of a boiler or other heating device.

The deflector on the chimney pipe is also attached to protect it from precipitation and any debris. The adaptation helps to reduce fuel costs.

The most popular Tsagi deflector. This is a kind of cylinder with a top. The diameter is usually several times larger than the main chimney. It costs between 900-2000 rubles.

Have deflector Tsagi there are pros and cons. In winter, in severe frost, ice accumulates and grows on the walls (inside). The flow area can fully tighten. It may not work in the absence of wind or light breeze.

I would like to talk about rotating deflector. Works like a windmill. Pros: improved traction by 20%, little protection from debris, precipitation.

But what happens if there is no wind? He will stop doing his job. In severe frost, such a deflector "overgrows" with ice. We'll have to climb onto the roof and knock the ice off the blades. The downside is that you need to constantly lubricate the bearing or bushing.

If you nevertheless decided to install a deflector, then you need to ask yourself questions:

• How much will it increase the wind load on the main pipe?
• How often will it clog
• How will it work in calm

Is there a need for a deflector on the pipe ("dark" side)

This adaptation is used only in some exceptional cases. If the house is high on the windy side and traction needs to be improved. A chimney is suitable for this case.

But at one point, it can be completely covered with dense soot if heated with raw granules or coniferous briquettes. But this is not the only reason why soot appears. The upper part is under constant temperature change. Cooled periodically, then heats up. As a result, the soot sticks. The smoke will not go anywhere, and it will go inside the room.

Do not put fungi with spark extinguishers! They are used in exceptional cases. You will constantly climb on the roof and clean. If this is not a problem for you, then do it your own way.

If you have an old wood-burning stove, then in no case install the deflector. Instead, it is better to install a chimney (tent or umbrella).