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Amy
Strange smell when AC is on
Amy

Living in Colorado, humidity is something unknown to me. However, we have had one of the wettest springs on record. With rain daily, and hitting our normal monthly rainfall in just 3 days, things aren't just wet, they are soggy. However, the days are drying out and heating up which means I need our AC. In years past, I hose down the unit that is outside next to our house, and turn it on. Everything works fine. This year, however, I get a fowl smell when the AC is on for more than just a few minutes. It's weak at first, but gets stronger throughout the day. The small reminds me of a forgotten tub of food in the depths of the fridge. It makes our house smell like it's spoiling.

What do I need to do to check/clean the system so I can rid our house of the fowl smell when we are running the AC?

ed21
Re: Strange smell when AC is on
ed21

Check the drip/condensate pan under the coils and the drain. The drain typically clogs and then the pan collects water that turns into a swamp. If it's that bad the coils and surrounding sheet metal may need cleaning too.

Amy
Re: Strange smell when AC is on
Amy

I've been searching today for coils and drip pan along with a line I can pour bleach into before the drip pan. I'm not having any luck. This picture shows. the white PVC pipe coming out of an "aprilair 560" unit used to control the amount of humidity in the home. It has always worked great for us, but in honesty, I haven't paid attention to it the last day or two. https://www.flickr.com/photos/[email protected]/shares/3VcT7h

This picture shows the duct work above the unit. I can't seem to find a way to get to the drip pan. If someone has suggestions, I'd welcome them. but it looks like I may have to call someone. What are your thoughts?
https://www.flickr.com/photos/[email protected]/shares/Zi171x

dj1
Re: Strange smell when AC is on
dj1

Your two pictures show very little, and they don't show what we want to see.

Take a picture of the base of the unit, usually that's where you will find the condensation drain in most settings.

If you stressed on time, call an a/c guy.

ed21
Re: Strange smell when AC is on
ed21

The first pic looks like you might have a humidifier on the air handler. Supposed to add moisture to the air when heating. This is another place for a "swamp" to develop.
To access the drip pan usually the front of the unit has to come off. If the drain is clogged, bleach is not likely to fix it.
I'd say it's probably time to call for service. Watch what they do and what they take apart and next time you might be able to fix it. Bi-yearly service at the change of the seasons is a good idea. Most HVAC companies will provide the service.

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