I put this in general as it covers a fair amount of areas. First off I need a new roof and Ugggh Im going to hire it done. Knees are bad it is two full stories etc etc. My guy came today and said the top two foot of the chimney is shot and he could take it down by hand. I knew that and had a plan to eliminate it as the only thing it is now used for is the water heater flu. Water heater is working great it was the one that was in the house when we bought it, regular old 40 gallon job. Could go any day or last for ten more years. The roof guy said it will save quite a bit of money to rip out the chimney down to the roof line patch the hole and forget it was ever there, as opposed to fixing it and redoing all the flashing as it is in the center of the house. Seemed logical. WH is natural gas now so if I stay with gas I need one of those tanks that vents with PVC like the new furnace is. I know nothing about those tanks and setups but willing to learn. The other way to go is an electric tank. I have a 200 amp panel would have to wire in a breaker and cable is all. Im already heating 500 gallons of water with electric in the hot tub so whats another 50 gallons. What say you all?