My Question is, I now have an Electric Water Heater which is 24 years old and works well but I think I would be better off with a Direct Vent propane Water heater. As my basement corner where the flues are now for my furnace and wood burner, are too crowded for a water heater,If I put a direct vent water heater in same spot as my electric, I will have to run the vent pipe along the basement wall about 15 feet and then to the outside. Is this acceptable? What is the longest run acceptable for a direct vent heater and what are some suggestions out there for a good water heater that has a quick recovery to it? Many thanks,