Bathroom extractor fans are extremely important in your household in keeping your family healthy. Bathroom extractor fans keep condensation build up at a normal level; it keeps your bathroom from having that damp feel to it, and keeps odors and mould out of the bathroom. With so many choices out there it is hard to decide what type you need to buy. The tips below will help you decide on what type to get along with; and how to install them.
Before you even buy your bathroom extractor fan you need to figure out the following: wiring regulations, bathroom zones, type of fan size, air extraction rate, and operation.
Wiring Regulations: Water and electricity do not mix. It can combine into a fatal situation. You do not want to put your fan in an area where it could kill you or anyone else in your household. So the bathroom can be divided into different zones. The four zones are 0, 1, 2, and 3. Zone zero is in the bath. Zone one is located directly above the bath. Zone two is all directions extended from zone one and zone three is every where else. The main places you are allowed to put a fan is in zones one and two.
The Two Types of Extractor Fans: There are two types of extractor fans. One is the axial fans and the other is the centrifugal fans.
Axial fans:These fans are also called propeller fans in some places. These fans are more popular. This is because they are cheaper than the other type, and even smaller. They are commonly like a house fan in how they rotate. They are also a lot more durable then the centrifugal fans.
Centrifugal fans:These are not as popular because of the price and the fact that they tend to be nosier than the axial fans. They are not durable but they do push more clean air into the room faster then the axial fans do.
Air extraction Rate: This is considered one of the most important aspects to consider when you are thinking of buying a fan. You want a fan that has a minimum of 80m3/hr to 85m3/hr is standard. If you have a fan that has 90m3/hr or more then it may be too powerful for your bathroom depending on the size of your bathroom.
Size:The size of a bathroom fan can range from four inch to six inch. On most cases four inch fans will do just fine. A six inch extractor fan should only be used in bathrooms bigger than three meters squared.
Tips Before you install
- Do NOT place with in reach of people showering or bathing
- Do NOT place by a window
- Do NOT place around a source of heat
- Make sure there is a significant amount of air leakage in room.
- The fans should be places closest to the main source of moisture.
Installation: There are many places that you can install a bathroom extractor fan. These include: in the wall, over a shower or bath, or in the ceiling
- The first thing you need to do is decide what position you want your bathroom extractor fan to be in.
- Check to see if there are any buried cables in the wall by using a cable finder.
- Next you need to check for soiled pipes, or waste. You also need to make sure that the fan will not vent fumes into another persons window.
- Mark the position on the wall according to manufactures instruction.
- Mark the center and drill a hole through the wall. You will be using this hole as the centre when making the opening on the outside wall.
- Use a 10mm bit to drill a series of holes around the circumference of the circle. Make sure your working from both sides of the wall.
- Chisel or hammer out all the waste
- Fit aluminum ducting into the hole. Make sure that it slopes downward towards the outside hole.
- Cement the outside and plaster the inside.
- Follow the manufactures instructions and fit the fan into the hole.
- The final step is to drill or plug the remaining holes and fix the fan into the wall.