'on demand' inline water heater for

twocents

water changes. Would be cold water straight from tap (probably vary from 60 degrees on up, I live on Long Island, NY.
Does anyone here own one? Heard of one?
Thanks.

TexasTanker

My dad's house has on demand hot water, for the whole house. I'm pretty sure it's not the same thing though. Good luck though.

twocents

Thanks Texas, but no, that would not work.
It would have to work with either a water python type of water hose, or an RV quality hose, and be able to be 'dialed in' to output 78 degree water. An 'on demand' but a different type.
I have a very cranky Moen faucet (it really needs to be replaced) that is difficult to regulate, this is the main reason it has crossed my mind.
For anyone who is an inventor, I think this would be a 'hot' item. I think a lot of aquarists would love to hook up a hose to a cold water faucet, have it go through a heater like this, and have the proper temp water go into a tank (with appropriate water conditioners of course, I use API tap water conditioner, works like a charm.).
Thanks for the input.
For the record though, the on demand water heaters are a very nice concept. They only seem to work with gas, something which we do not have.

zof

Commonly referred to as tank-less water heaters they come in both gas and electric, the smaller versions for just a sink are typically electric for ease of installation. Problem with trying to dial in a temp for a water heater is they tend not to be very accurate, there's probably at least a 5 degree variance and more likely close to 10 degrees since they dont hold the water until it gets hot enough.

Go for the new faucet, cheaper and more accurate.

AbbeysDad

What is being suggested here is not a tankless hot water heater. These heaters require that the hot water is turned on full blast and it will deliver approximately 120 deg. F water!

I just recently hooked a garden hose adapter to my bathroom faucet. I ran the hot water (conventional hot water heater) until the water was hot (takes a few minutes because of the basement to second floor run). Then I backed off the hot water some and turned on the cold water until I got a consistent temperature of 75-78. Then I used a permanent pen to put tiny reference marks/lines on each faucet. You'd never know they were there unless you knew they were there. Works every time

TexasTanker

Another option would be to run the water from the faucet to a 5G bucket and allow it to fill half way then run a pump out to the tank. That way you have a buffering area to treat the water and at least get it close to temp before going to the tank. Unless you have a huge tank, in which case if you're in the ballpark, it should affect anything.

aunt kymmie

What a great idea. I'm going to use that same method. Thanks for the tip!

zof

Got a link to one? Interested to see what you guys are talking about.

AbbeysDad

There is no such thing - what was suggested is an in-line heater to heat cold tap water to 75-80 deg F for water changes. I offered a much simpler approach by 'indexing' the hot and cold faucet positions to consistently deliver a desired temperature. It costs nothing and works perfectly

twocents

Another thing I might do is buy a Rubbermaid 55 gallon brute with a lid (lid is important!! kitty cats..). Fill it with water, put a 300 watt heater in it and let it sit for the week. Use a small pump to refill the tanks. I am not too likely to do this as I fear accidentaly drowning a cat. That I will not allow, so I will just stick with the water python.