I don't know anything about this except what it says here. REMichel
is a very well regarded company around here, and in about 10 states.


http://techtips.remichel.com/ShowIns...stallItemID=41

Hot Water Circulation

Instant hot water at the faucets

Voluntary potable water conservation is certainly environmentally
conscientious and mandatory conservation guide lines will be forth
coming.

Why wait? Why not begin conserving now? Why not promote
environmentally friendly conservation now? We waste MILLIONS of
gallons of potable water every day when we turn on our hot water
faucet and let it run until hot water runs out of it. Why??

We know that we can have a system installed to produce hot water
almost immediately, but few people are willing to spend the money to
revamp their entire potable water piping system and install a
recirculating loop.
Not so now...
We have systems available that can be installed by one mechanic in 1/2
day, WITH NO RETURN LOOP REQUIRED!

Installing hot water recirculating systems in new construction is fast
becoming the norm. Why not install hot water re-circ systems on
existing installations now that much of the expense has been removed?
These installs can afford nice profits on high end jobs that lead to
other sales and service. The next time you hear about a retrofit hot
water re-circ job, don't pass it by. Sell one of the new Grundfos
retrofit systems and get involved in this very profitable niche
market.

See REM Catalog number 5W600, Grundfos instant hot water system.