On Sat, 12 Dec 2009 09:10:31 -0800, "Bob F"
wrote:

Van Chocstraw wrote:
mcp6453 wrote:
Home Depot is hawking a system for recirculating hot water such that
each faucet in the home has instant hot water. Does anyone have any
comments, good or bad, about these?

Another energy wasting idea from the fuel companies.

What you need is a small 6 gallon point of use tank under the sink.
Gives you instant hot water and uses little energy. If you use enough
hot water the hot water from the main tank reheats the point of use
tank so it doesn't even need to heat the water.

Which introduces a big waste of energy all the time. The push button pump system
wastes none. It only warms the pipes when you are going to use the hot water
anyway.


Have you ever checked to see how much power is required to keep a well
insulated 5 gallon water heater hot?????? Likely about as much as to
run a circulating pump. And it's a lot easier to retrofit to an
existing house.
You can also put a SWITCH on it, or a TIMER so you only have hot water
in reserve when you are likely to want it.