I'm renting a house that has an old steam furnace, complete with water runoff and the hissing and clanging noises that tells you that it is working. This morning, I noticed that it was unusually cold in the house so I went downstairs to check it out. I found a puddle of water surrounding the furnace and hot water heater (both are right next to each other). I still have hot water and the furnace is lit and seems like it was still burning hot, but I could not hear any of the usual noises. I turned off the heat so just the pilot should be on, but now I'm worried. Any suggestions on what this could be and if a professional is needed? I have a pregnant wife, so I want to get this fixed before she gets home tonight if possible.