instant Hot Water
 

If you are referring to thankless water heaters (sometimes called instant) I doubt they would benefit from an external recirc pump as they (at least mine up north did) have that as part of the system.

0.70 cents (not $0.70) is 7/10ths of a penny per gallon... which is about a penny per gallon.

The rates are actually 0.21 to 0.42 cents per gallon depending on usage at my address. YMMV.

I have the circulating pump and a 40 gallon hot water heater. The pump has a timer and set the pump to come on in the morning and bedtime for a few minutes.
The pump pumps hot water to a return value hocked to the cold water line. The value would be at the sink that is farest from the hot water heater.

I know I am a little anal, but I use a bucket to catch water in the tub until warm. About 2 gallons per bath. I use the water to water my plants each day. Problem solved.

The pump actually quit. I took it apart and the impeller spun freely on the motor shaft. I contacted Watts, but they said it was over a year old and out of warranty. I don't feel that it saved me the $10.00 that it cost.

:coolsmiley:
Dog's water from the day before into the rose bush every morning. Until it died! (the rose, not the dog.)

New homes in the Southern Oaks area have tankless (infinite) water heaters. Nice because they use gas instead of electric and only runs to heat water when you need it rather than maintaining a large tank of hot water at all times. It also creates extra storage space in the utility closet because of not having the big tank taking up space. I'm even starting to see them build those closets out with that space open all the way to the floor for even more extra space. However, there is nothing "instant" about the hot water. I haven't timed it but it takes a little time for the water to run hot in the master bathroom shower. My water bill seems reasonable to me and my assumption is that any extra water I am paying for isn't costing me as much as an electric water heater maintaining a finite tank of hot water until I need it. I usually start the shower and then do the things I might usually do after the shower (brush teeth for example) while I wait for it to get hot.

Wowowowowowowwow! Now THAT is amazing dedication! :)

how about the energy wasted. when all that hot water is recirculating 24/7. the hot water will leave the tank at 100 degrees run through 100 feet of piping and return back to the tank at 80 degrees.

Hello my anal brother :a040:

I just shut off the water when showering when I’m washing my face, shampooing my hair, and washing my body. This takes about 4 to 5 mins with the hot water running maybe 25 to 40 seconds. I am anal about order and time when showering (Which IMO saves a lot more water than bathing in tub in you’re own dirty water.) This saves more water IMO than the wait for hot water. I too sometimes gather water and water my tropical plants with it.

There is a timer on it so if you want to you can set it to run during any specific hours of the day or night and you can save the dollar or 2 a month if that is what it is, but, speaking only for myself, I'm not using to save a buck or 2 but just for the convenience.

We have a watts pump with timer (on at 7am, off at 11pm). It's one of those little things in life that is not a necessity but really nice to have, and a small price to pay for comfort (esp hers...). Nothing like turning on any faucet and -really- one second later, warm/hot water. Have had it for over 3 years with 0 issues. When traveling we simply unplug it.

I don’t understand your comment. Legal? Kindly elaborate.

I always disliked thankless water heaters. :ho: