they make a little pump that taps into your hot water line, when it drops below 85 degrees, it turns on and pumps the cool water into the cold water line. this tends to make your cold line extra warm when you first turn it on. no water is wasted because the water ecentialy flows back through the cold line and back into the tank. dont install it yourself unless you are good at plumbing stuff. it doesnt need to be on the tub either, you can put it under the sink instead. the hot water isnt right there imediatly, but it is a lot closser

as the husband of Pregojess, i am a lic. plumber in the state of Texas. I would hate to see you waste your money on purchasing the instant water heater the reason it takes a few to get hot water to said fixture is becuase it is prob the furthest away from the heater so if you replace your heater with an instant it still has the same distance to travel to get to said fixture there is 2 ways you can fix this problem you can run a new water line from the last fixture back to the water heater with a pump set on a temp switch so it will cir. water if it goes below say 80 deg. (EXP) There is another system that you can possible install your self or you can call your local plumber and ask he/she about a cold water return valve like the product at this website you may even find other systems like this that will be cheaper than installing a water heater that will cost you 1k and not solve your problem…

Thank you
D Collins
Texas Journeyman Plumber
13 years of plumbing exp.

Check with your local Lowes, Home Depot or plumbing supply store for what is called a point of use water heater They can be easily installed under the sink and can be plugged into a standard outlet. These will save you money if you have an electric water heater for the whole house because it doesn’t use as much energy to heat up. However because of the size of these heaters it may not keep up with high demands. The tank inside is only a few gallons.

Have your plumber install a circulating pump. It requires that your hot water plumbing have a loop back to the pump (therefore–extra plumbing required), but it sure is nice to turn on the faucet and just a second later, have hot water.

TOO faucets yes, Insta Hot brand is one. Don’t know what kind house store sell i.e. home depot

In America long time?

Is there actually a question you’re trying to get answered?

There are several ways to get “instant” hot water.
- local small water heater – obviously, heats water at the tap or very near it (various products can do this)
- recirculating valve — recirculates water between cold and hot water pipes