Re: Tankless hot water heater and recirculator pumps
You can install a small electric 2 gallon tank and circulate through that only, then you tankless just heats any ditional cold water. The power consumption to maintain 105F or so in that tank would be minimal.
One better, would be to use a 2nd circulator pump with an aquastat and circulate the small storage tank through hte tankless heater when needed.
I almost went this route, but I;m going ot have a Nvien "a" model installed whcih has a built-in circulation pump and 1/2 gallon buffer tank. It's designed for external circulation out of hte bax and has a 24 hour timer on the controls.
1925 Two-Story Stucco Beaux Arts Neoclassical