Do you see an allergist or dermatologist for your skin allergies? If so, I would ask them what to do. If you have any, any breathing problems, please get out ASAP.
When is the HVAC person coming? If it were me, I'd want to explain the situation to her/him and find out exactly what they were doing to treat the mold.
I can't visualize your heating unit, so I'm not sure what might work. Bleach is usually the best topical agent used to kill mold. My mom's condo ended up with a huge mold problem after her unit flooded from a plumbing leak. We had to have a mold assessment and professionals come in to remediate the mold. With her HVAC system, the air handler and interior duct work were cleaned with HEPA vacuuming following the heavy duty cleaning.
Just set an appointment with the dermatologist, first opening is 23rd, but at least I can get some more ointment. I have some expired ointment left to use for now.
The heating/a.c. guy came Friday and yesterday. He fixed the unit so it works, but it is still leaking and will short circuit again.
I just sent a fax to the landlord about it still leaking and about the mold growth. I do not think they will send anyone to fix the mold, I have no idea. The building is very old (1910) and is full of mold, so I doubt the firewall material being moldy will bother them. I did include that it is causing allergic reactions, and it is getting difficult to breathe in there. It got better when I left for work. I turned on my room size air filter, hoping that will help. The skin allergies didn't start until I moved into this apartment. (Always had allergic rhinitis though.) I didn't think the apartment was the cause as I've lived in worse places, but now I think it is, and my lease just renewed on the 1st for another year. Carpet, dust mites, mold in walls. :sigh:
Thanks for the info. I hope the landlords do something about it, I don't know if I can spray bleach in there, but I included in the fax that if they recommend something I can spray in there, I will get to it immediately.