Why does my AC vent give out a funny smell, somewhat like chocolate, after I switch from the heater to the AC?

We started to get the same smell last year. We called an AC cleaner and he found mold. He said he eradicated the mold. But the same smell came back in a few days. We used deodorizers to get rid of the smell. But, the good smell mixed with the bad smell and I guess it cancelled out. I just want to know if this is common.

Why does my AC vent give out a funny smell, somewhat like chocolate, after I switch from the heater to the AC?
%26quot;Rick....learn how to speak and wright English correctly. Reading your answer looks like some 10 year old want to be thug wrote it. GROW UP%26quot; -Dradle





Practice what you preach. It%26#039;s %26quot;write%26quot;, not %26quot;wright%26quot;.
Reply:Harry, no it is not common if you smell it all the time. The first time you run the furnace or A/C at the beginning of the season it is common to have a different smell... but only the first time. If you notice it all the time and from every register in the house, then the source is either in the main duct or in the A/C coil itself. If you only notice it from one register, then this narrows down the search. Why you would have mold in the first place is of concern because it may mean the A/C coil is not draining properly. It sounds like you need to bring someone back out and have it thoroughly investigated.


One last thing... I agree with Dradle concerning Rick%26#039;s response... it took me twice as long to read than if he had written English. Answering someones question is not the place to for %26quot;cool%26quot; street talk. People want answers, not jive.
Reply:He may not have cleaned the duct system. The mold probley migrated there. Change the filter too. Check the air humidifier and all its ducts for mold and clean and change wick in humidifier. Examine the blower assembly and vacuum out any dust and debree. The whole system including the auxilaries needs to be examined if mold was found in any part. Sound like the origonal maintence tech did a poor job.
Reply:Rick....learn how to speak and wright English correctly. Reading your answer looks like some 10 year old want to be thug wrote it. GROW UP
Reply:Datz nt common.....U r kid mite hav poured some chocolate sauce in it...lolz...Call dat guy bck again....Summerz round da corner...So betta do dat fast



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