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Determing the size of exhaust fan you need.

The general rule of thumb for calculating the CFM you will need is take the square footage of your bathroom and multiply it by 110% (or 1.1). To find the square footage all you need to do is times the length by the width of your bathroom. For example a 8 foot by 8 foot bathroom would have a square footage around 64. Multiply 64 by 110% to get 70.4. You will need a 70CFM fan to ventilate your bathroom.


Determine the Sone rating you would prefer.

A Sone is a measurement of sound in terms of comfortable hearing level. The lower the Sone Rating, the quieter your fan will be. One sone is equal to a quiet refrigerator.


There are three types of bathroom fans.

 

1)       Ceiling Mount – Ceiling Mounted fans mount into your bathroom ceiling and vent into an attic space.

2)       Wall Mount – Wall Mounted bathroom fans are located behind an external wall and can be used when venting through the roof is impossible.

3)       In-line Fan An inline fan does not rest directly on the ceiling of the bathroom.  Rather - the fan installs in the attic space above or slightly away from the bathroom.  

What is ENERGY STAR?

 

Earning the ENERGY STAR means products meet strict energy efficiency guidelines set by the US Environmental Protection Agency. Lighting products that have earned the ENERGY STAR deliver exceptional features, while using less energy. Saving energy helps you save money on utility bills and protect the environment by reducing greenhouse gas emissions in the fight against climate change.


ENERGY STAR Qualified ceiling fan/light combination units:

1)      are over 50% more efficient than conventional fan/light units, which can save you more than $15 per year on utility bills.

  2)      use improved motors and blade designs. If your fan doesn't include lighting, be sure to purchase an ENERGY STAR qualified light kit. This lighting is efficient and long lasting, so you won't have             to make frequent bulb changes.



Over The Shower

If you plan to install a fan directly over your shower, be sure the fan you are choosing is approved for use in wet areas.


Safety

Use a ladder for high ceilings.
If you aren't comfortable doing electric work, drywall or running the ducts, hire someone to do it for you. You will end up saving time and frustration and it will be worth the money.

  • Turn off the electricity supply before installing the appliance.
  • If using a ladder, have someone support it whilst you are installing the fan.
  • Make sure you follow all instructions completely.
  • If you know nothing about electricty, it would be better to hire someone that knows about wiring. The wrong wire connected to the right or wrong wire can cause a lot of damage which could includ a fire or killing you.
  • If using power tools for any portion of this project, be sure you are familiar with their operation.