A pot filler has a pretty high flow rate.

An instant how water heater is not likely to keep up with that very well.

I cannot recall seeing a pot filler with more than one input either.
You normally want to cook starting with cold water to minimize pickup in pipes.

Instant hots don't have very big tanks and have low flow (for safety I suppose).

While normally you don't want to cook with hot water, getting it from an instant hot dispenser doesn't have the mineral leaching problem one expects from typically water heater plumbing.

If you can find something that works, do share. Adding instant hot to a potfiller gives the thing merit to those of us with no interest in plain old cold potfillers!

Fori --> My point exactly. If the hot water is from an instant hot tank, I thought you wouldn't have to worry about mineral leaching etc. My main hot water supply for the house is a tankless as well that is stainless but I would worry about the pipes.

Any other ideas people?

Lalitha

Lalitha,
I searched high and low for a wall mount instant hot for next to my pot filler, no luck. I spoke with techs at a few companies that make instant hot faucets and none of them could give me a reason that they don't make a wall mount fixture.
I ended up giving up, but you give me new hope! Let me know if you find one, and I am going to continue my search. I normally don't give up so easily, I just got so frustrated.

The governmental regulations concerning water use allows a "pot filler" with a high flow to be connected to the cold water supply only. The minute you create something that can connect to hot water as well, you have created a "faucet" and that will come under the water saver 2.GPM guidelines for flow. In addition, it will come under the building codes as needing a drain under it. No faucet can exist without a drain.

And that's why the simple solution to your problem is a prep sink close enough to the range to be able to use a pull out faucet as a pot filler. It will be slightly less flow, but you're not a restaurant that needs 4 30 gallon stock pots boiling all the time. And it also gives you a place to drain your pots, which is a common complaint about pot fillers.

I can tell you that no residential instant hot or reverse osmosis system will satisfy the flow rate of a pot filler. I know this first hand, because for my project I spec'd for the pot filler to be hooked up to 1/2" pex. The contractor suggested that he saw no reason the RO wouldn't work, since my system has a pump. I was skeptical and told him that if it doesn't work, he'd have to eat the cost to fix it. All connected, I ran a test. The sink faucet filled an 8 quart pot in about a minute. The potfiller fed from RO? Over 2.5 minutes. I won the bet, but lost a few days waiting for it to get fixed.