Your propane tank is full, so why is your furnace blowing cold air and your shower putting out cold water? The problem could be with a valve or other component of your propane tank, or the tank itself. Propane tanks last roughly 70 years. We can assist with repairs, along with cleaning & maintaining Dousman LP Gas tanks.
Attempting to fix the problem on your own is extremely dangerous. Call the professionals at Dousman LP Gas Inc and we'll have your propane tank back on the job in no time. Additionally, let us know if your tank needs a refill.