[MBAtarga]

How much hot water do you need available for cleaning the screens? Why pay to keep an extra 10 gallons hot if 30 gallons is more than you'd need at one time? For inconsistent use (cleaning only), unless your utilities are very high, I would think there would be a very long term pay-off on going tankless. Now if you needed a fairly steady flow of hot water, tankless would probably pay off sooner.