Can it work in conjunction with a regular water heater so I can use it on sinks that are slow to heat up without sacrificing the hot water storage?
619863
you could hook it up to the cold water inlet instead of the hot water if you don't want to sacrifice any hot water from your main water heater. But be aware when you've used up all the hot water in this small tank its going to be a while before you'll get hot water again. if you plan to use large flows of hot water, I'd suggest you not do this. The hot water use for a normal bath sink is typically minimal.
619864
Yes, in my opinion. I was thinking exactly the same thing. It would simply reheat (and dilute) the the cooled water laying in the hot water pipe. If you only used small amounts of hot water each time, like washing your hands in a half bath, for instance, you may as well use cold water supply because the same water may be heated twice. For showers and dish washing it would work great and simply pass the hot water from regular tank without even kicking on and you won't run out of hot water after just 2 gallons. I think the temperature of the small tank should be 2 to 3 degrees cooler than the regular tank but good luck adjusting it that close. Thanks for asking. Yes, in my opinion. I was thinking exactly the same thing. It would simply reheat (and dilute) the the cooled water laying in the hot water pipe. If you only used small amounts of hot water each time, like washing your hands in a half bath, for instance, you may as well use cold water supply because the same water may be heated twice. For showers and dish washing it would work great and simply pass the hot water from regular tank without even kicking on and you won't run out of hot water after just 2 gallons. I think the temperature of the small tank should be 2 to 3 degrees cooler than the... » Read More Yes, in my opinion. I was thinking exactly the same thing. It would simply reheat (and dilute) the the cooled water laying in the hot water pipe. If you only used small amounts of hot water each time, like washing your hands in a half bath, for instance, you may as well use cold water supply because the same water may be heated twice. For showers and dish washing it would work great and simply pass the hot water from regular tank without even kicking on and you won't run out of hot water after just 2 gallons. I think the temperature of the small tank should be 2 to 3 degrees cooler than the regular tank but good luck adjusting it that close. Thanks for asking. « Show Less
619865
That's exactly what I'm using mine for. I hooked it to the hot water line below my sink and have instant hot water. The cold water in the line that used to run for about a minute out of my spout mixes with the water in the unit so that I never get cool water when running the hot water side of my faucet.
619866
Exactly! I have done so for years. Heater was on floor beneath the handbowl and spliced into pipe from big heater to handbowl tap.
651329
You can do it either way. I place mine between the main water heater and faucet sink. That way I get hot water until the hot water from the main water heater get to the faucet. Then the water stays hot.
1410196
Unlikely. The water is split after the filter and goes to the hot tank and staight to the cold-tap. But the hot/cold tap, filter, and water lines can get naturally warm from heat let off from the unit and of course right after you dispense hot water. Check under your sink and it will be a few degrees warmer due to the heat from the tank. For cold you need to let it run a few seconds (5 or so) to cool it down but even then it may take a lot longer to get as cold as the regular faucet.
889667
Yes, you could do that. I had the same problem and installed it on a porch directly behind my sink. The only other restriction would be that you need a drain for the temperature - pressure relief valve.
1660515
I don't see why not. this filters the tap water so there is no build up on the on demand water heater.
1502007
Probably not since there is some output of heat. Probably best to locate it in your basement, (if you have one) below where the sink and dishwasher are and then the heat can circulate freely and dissipate.
2251335
yes, but I would recommend this for a dedicated single faucet/shower configuration, this is NOT a whole house heater.
1011341
no. basically what this unit does is keep water from a more distant water heater warm, so that you do not need to wait as long. I think that it would be very poor for what you want.
270923
It works well. In fact, if you use a central water heater, the water is first heated by the central water heater. The water in the pipes cools and then is sent to the dishwasher where it is heated again by the dishwasher. This heater is actually an energy and money saver. We hooked it up the cold water pipe under the sink and tee'd the outlet to the hot water feed to the sink and also to the dishwasher. No more waiting for hot water at the sink and then wasting energy for the hot water that cools in the piping to the sink.
1945447
Yes. It will give you hot water faster. But be aware, when your existing hot water reaches the tank, it will be REALLY hot!
188201
That is exactly what we did with ours. We installed it under our kitchen sink as the water heater is quite far from the kitchen and it was taking quite a while for the warm water to arrive. Now it is almost instantaneous. Julie
1340278
Well, you can and I did, but let me tell you why and give you a cautionary note. In my case, it was a remote bathroom sink. It takes forever for the hot water to get over there. So I put this under the sink with a dedicated 30A circuit, attached to the hot water side. It is however heating cold water, because the water in the hot water pipe coming from the other side of the house is invariably cold. This allows someone to wash their hands with warm/hot water instead of waiting 5 minutes with the water running. You would never need 5 minutes worth of hot water at that sink. Now, what would happen beyond that? Well, if you kept running the water on full hot until the hot water from the house system reached this unit, it would continue to heat the water anyway, resulting in scalding hot water coming out of the tap. So depending on your application, you may want to do it the way I did. Or not.
2276615
We have this water heater hooked up to regular electrical service and it barely heats water at all. I would not buy it. For any purpose.
422128
Yes I think that will work fine. You can use it just to generate hot water. Hope this helps!
2114075
The device barely warmed the water up so I doubt theres much temperature control. I returned it, this item doesn't work. It might only work to heat water for a small sink.
511053
I would have to say NO as the plastic parts would melt I think you are talking about a hot water Rad system with a boiler or maybe infloor heating with a water heater. You need a Bell&Gosset; pump or Grundfos pump or a Taco pump that can be variable speed and definitly high boiler temp rated
293077
I would say that with the right kind of connectors you could rig something up to attach it to a sink. That being said, I would not recommend it because the flow of water would probably not be satisfactory for what you would expect from a sink. Unless you are just wanting to use it as a separate drinking water faucet like this one. 6" Satin Nickel Touch-Flo Cold Water Dispenser Faucet