Originally Posted by AlbacoreShuffle
If you have room , I'd install a 50 gallon.
The difference in cost for the tank isn't much and the labor is the same.
Actually the cost of a 50 gallon is usually a lot cheaper than a 40 gallon.
Labor is not the same if it's plumbed for a 40 gallon and you have to move piping for a taller heater.
That being said, i'd go with a 50 if you have the space. Do you have laundry hookups and dishwasher in the house? If so, i'd definitely go 50. Then if you want to shower while the washer is going, it's not a huge problem.