Can A/C units pass mold and other toxic things

RobbZeeJuly 19, 2012

I have terrible allergy problems lately and I wonder if the air conditioner is the culprit. Can air conditioner units get moldy inside? How would you check? There is condensation right so there could be that possibility?

Thank you for reporting this comment. Undo
mike_home

The mold is always a possibility wherever there is moisture. You could start by checking the coil. Look for black mold spores.

    Bookmark   July 20, 2012 at 10:15AM
Thank you for reporting this comment. Undo
ionized_gw

A properly-installed and maintained HVAC system should not be growing mold, but there are always problems that crop up. Look in your ducts and open up your air handler and look in there. Take pictures and report back.

You might find this book useful:

My House Is Killing Me!: The Home Guide for Families with Allergies and Asthma

Jeffrey C. May

    Bookmark   July 20, 2012 at 11:01AM
Thank you for reporting this comment. Undo
energy_rater_la

also Healty House by John Bower.

anywhere you have moisutre and a food source..
like condensation and dirt..you have potential
for mold.

look inside ahu, inside return, and inside
ducts by removing supply grills.
lots of time mold will grow at duct take offs
at the plenum where the take offs are not mastic
sealed. dirty air is pulled in, condensation forms
and mold will grow inside plenum and ducts near
plenums. the mold will spread as far inside the ducts
as the moisture and food source reaches.

best of luck.

    Bookmark   July 20, 2012 at 1:58PM
Thank you for reporting this comment. Undo
RobbZee

Great tips! I took a look in the ducts and did not see anything. I think I will have them cleaned though. I don't see anything blowing out when the A/C is on. My allergy problems could be coming from elsewhere but I thought I would ask.

    Bookmark   July 21, 2012 at 10:29AM
Thank you for reporting this comment. Undo
ionized_gw

Robin, if you have not been allergy tested, you probably should do it. Beyond making sure that your "home hygiene" is stringent, that is the most important thing. You can't approach a problem without defining it.

Duct cleaning is overrated. You really need to have a look inside the air handler at the AC coil and drip pan.

    Bookmark   July 23, 2012 at 10:07AM
Thank you for reporting this comment. Undo
brickeyee

"Look for black mold spores."

Be sure you use a microscope.

    Bookmark   July 23, 2012 at 4:22PM
Sign Up to comment
More Discussions
Does Air Duct Cleaning really help?
We live in a 40 year old home with a forced air gas...
lincann
Disconnect for Fujitsu mini split indoor unit (slim duct type)
We are installing a Fujitsu mini split system that...
ylmzm
Natural gas air conditioning
Does anyone have experience with the newer residential...
blueyebear
Opinions please Mitsubishi M - S E R I E S H I G H P E R F O R M A N C
Our HVAC guy is suggesting this for a complete system...
almostemptynester
Need help with selecting Eff Heat Pump replacement.
20 yr old American Std Heat Pump stopped working. ...
2015hvac
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™