"David Sumner" wrote in message
...
About two years ago I purchased a 4unit apartment building in Houston. Each
unit has 1 bathroom and a kitchen, no dishwashers or w/d, each with it's own
water heater in the kitchen (a real eyesore). I'd like to replace the
conventional electric water heaters with tankless models to conserve space and
improve the appearance. Has anybody had any experience with these units? I
know that the current circuits will need to be upgraded from 30amp to at least
50amp. Other than that, is the installation pretty much plug-and-play? Is
there any radiant heat generated from the operation of the units? Do they
make any noise while operating?

This is Turtle.

If your planning on staying with electric power to have a tankless set up, you
in for a surprize here. Your going to need about a 125 amp to 200 amp electric
service to keep a steady good temperature of hot water to a shower and a
kitchen. You might in some cases need a add a 200 amp new meter pan up grade or
add a 200 amp meter pan and electric service. It's not just plug and play.

You might look at natural gas hot water system and is easily set up with just
running a 1/2" natural gas line to it and can be put in a inside wall or closet
or on a outside wall. it would 1/3 the cost for heating water and digital
controlled of the temperature of the water from 90ºF to 160ºF and supply about 9
GPM depending on the temp.

TURTLE