Gas and Oil Home Heating Furnaces - Smelly Heat Pump

I've got a Trane HP installed less than a year ago and recently it's began to smell like an old tool box or dirty socks, I can't decide. The service company has said it was common for mold to build up and cause what they call"stinky sock sydrome". They're coming out to treat the air handler with with some kind of clorox solution. Are they on the level and what can I do to prevent this from reoccurring. Also, have heard that some hvac spores can be quite hazardous is inhaled. Any truth to that one? Thanks

This is PDF.I play roller hockey and ice hockey.STINKY SOCKS is not 2 words my wife likes!!!!!!However...Let's start from the begining.Was the new HP connected to old ductwork?Was the ductwork checked to see if it needed cleaning?If you purchased a new car and less than a year later would you expect to smell like dirty socks?Is the drain for condensate plugged allowing water to accumalate and turn moldy?Remember inside your duct it is dark and cool,just waiting for all things to grow!!!!!Most A/C companies carry what is called "PAN" tablets that not only provide a nice scent to the air BUT KILL ALL KINDS of of unwanted things.If they use these "PAN" tablets read the container,you will surprised of what can lurk in in your condensate drain pan>PDF

This is something i share with all my customers.... When changing out your filter in the summer A/C months, spray a good shot of lysol in the return , this will help control the mold and mildew that grows in the cool damp enviroment that is in the system ... there are coil cleaners that will wash this mess away, and pan tabs are a good thing to use also...

You have dirty sock syndrome, not making this up. Call the Trane corporation, this is a problem that they are very familiar with. They will replace your indoor coil or have a ionizer installed in the duct work to kill the oder. It seems to happen only in heat and usually right after a defrost call.