Have you ever taken a shower and
the mirror starts to fog up? For almost all of us, we have experienced this at
least one time in our life, probably more often than not. You might open a
window, wipe it down with a towel, or think to yourself that you need a better
exhaust fan (Air King can help with that!). What a lot of people don’t think about is that same steam that is causing your
mirror to fog over is also going through your ducting. This presents a prime
opportunity for condensation to form within your ducting. Condensation in the
ducting forms when the hot steam from the shower passes through the cooler ducting,
causing the steam (water vapor) to turn into a liquid form (water). This is
especially true in cooler climates of the country. A very simple fix is to use
insulated ducting as well as placing insulation around and on top of the actual
exhaust fan (Make sure to check the rating of your exhaust fan as to how much
insulation can be placed on top of it. Generally fans are rated for at least an
R40 factor). By using insulated ducting it does not allow the air flowing through
it to cool fast enough to cause condensation.
What is the big deal with
condensation? Condensation can be harmful in many ways. Anytime you have
sitting water, the potential for mold and bacteria growth exists, so you are
working against one of the main reasons you have an exhaust fan in the first
place. Another issue is depending on the situation you could cause enough
condensation to form that it starts to drip out of your fan and possibly cause
damage to the ceiling material around the fan.
Air King, as well as the Home
Ventilation Institute and ENERGY STAR® all strongly recommend that insulated
ducting be used with all exhaust fans, so take a minute and check to see if
your fan’s ducting is
insulated or not. Your fan’s
ducting will thank you!
Want to learn more? Take a look
at our other topics or click on the “Learning
Center” tab of the Air King
main website at www.airkinglimited.com.