Can the exhaust pipes of range hoods and gas water heaters be lengthened at will?

Today, let’s talk about the exhaust pipe. The one that can use the exhaust pipe at home is the range hood, and the second is the gas water heater.

Let’s talk about the exhaust pipe of the gas water heater first. Each manufacturer has regulations on the length of the exhaust pipe of the gas water heater, and the maximum allowable length is 10 meters. The premise is that the exhaust pipe is not allowed to have a 90-degree elbow.

If there is a 90-degree elbow, reduce the length of the pipe by two meters. If there are two 90-degree elbows in your exhaust pipe, the length of the pipe can only be up to 6 meters.

In general, the length of the exhaust pipe is tens of centimeters, and the longest is one meter, so the master will not say anything when installing it.

According to the manufacturer’s regulations, it can be seen that the elbow has a great influence on the smoke exhaust, so when we design the exhaust direction, we tend to go as much as possible in a straight line.

Besides, the exhaust pipe of the range hood, the length of the exhaust pipe that comes with the range hood we use at home is 1.5 meters, which is also the default length of the manufacturer. The exhaust pipe within this length has no effect on the exhaust.

However, some owners have a wrong understanding of the exhaust pipe. They feel that it is a hose anyway, and it is not long enough to buy a pipe and connect it. Make it as long as you want.

This kind of thinking is wrong. The smoke exhaust principle of the range hood is the same as that of the gas water heater. If the exhaust pipe is too long, it will have a certain impact on the machine itself.

Some owners may say that the exhaust pipe of the range hood in the hotel is very long, and it is only three meters and two meters in the home, so it will not affect the machine.

The range hood used at home is different from the range hood used in the hotel. The power difference is very large. Some hotels have exhaust fans at the end of the exhaust pipe. So you can’t compare the range hood in the hotel with the one at home.

If the distance between the exhaust pipe of the range hood at home is relatively long, it is not possible to use a hose. It is better to combine the hose with a hard pipe, and then put the exhaust pipe on the ceiling to exhaust the smoke in a straight line to ensure the best effect.