I have a Bryant Furnace CT3836-C175. I live in a condo, and I am on the top floor, third floor. Anyway, my air conditioning is working great, and the blower works. But I get no heat. I have recently changed the filter, cleaned the furnace, but still no heat. Any ideas? I am renting, and my landlord won't do anything, and with Oct coming soon, its going to get cold! Thanks in advance!

Chad