It consumes about 23 watts during operation if you wish to do the math.

They work fine if you don't mind some warm water introduced into your cold side at the faucet that the manifold is located.

(Made by Grundfos)

If I couldnt run a dedicated recirc line back to heater, I would never consider one of these halfbaked recirc systems for that very same reason. Laing, Taco, Lobster, and Chilipepper included.

We dont drink hot water from the faucet as a general rule but with these it is introduced and somewhat unavoidable.

One way electric flow valve, programmable timer, pressure transducer

These could be mounted in a small box.

PRO: 1cold water after short run if line is full of hot water (flow valve is off because of pressure drop)(water should be flushed and safe to drink)

2 Uses no pump 3 parts are probably cheaper than any system.

CON: 1 won’t work if water is running anywhere, 2 must be programmed to turn on shortly before anticipated use.(twice a day for 15 min)

3 It ain’t available and Jerry would have to make it.4 probably requires an electrician to install a ground interrupt outlet box.

of course during summer the hot water does nto cool as bad, but it still takes 6-7 minutes to get hot to teh sinks in teh MB.

and yes, those pipe lengths are correct. my house is shaped like a [_] and the heater is on one short end with the MB on the other. i have seriously considered trenching across the back yard to run a new line!

my shower will actually go back to cold if you don't leave the diverter set so that there is a good trickle going into the tub. this house was originally on a well, and with 30 year old pipes i wonder if part of my problem is not some buildup in the pipes restricting flow.

The the solution to your hot water problem is to take the contractor who put uninsulated hot water lines in the slab out back and shoot him. It won't make the water any hotter, but it would make me feel better.

And what is a "Jerry’s magic box" anyway? Did I miss that somewhere? It sounds more bogus than the Hot Water Lobster-- but more expensive. At least with the lobster, you don't actually have to admit to paying good money for something that had "magic box" in the name.

By the way, doesn't Jerry also make water softeners that work by passing magnetic fields through the copper tubing? Seems that Jerry has a full line of "Magic" products.

as far as the pipes being uninsulated, that was common practice here up until the last decade. i live in teh county and prior to 2 years ago the ONLY thing permitted or inspected was the septic. you literally had the legal right to build what you wanted, where you wanted, in any manner you wished. therefore if you wanted to run waterhoses along the baseboards for inside plumbing you could do it legally. the builder who built my hosue was actually a local lumber yard. they went out of business about 5 years ago when Lowes came to town, this small town area(whole county is under 50k pop) could not support 3 lumberyards/home improvement stores.

David's hot water line has been the subject of a couple of threads. Installing a circ pump will help, but it will give him a radiant floor heating system. It will also cost a bundle to run because of the heat loss.

I wouldn't let the builder off so easily... perhaps not shoot him but at least force him to listen to Barry Manilow hits for a few hours.

What he did was stupid, and wasn't up to national code standards even if those codes weren't being enforced.