Instant hot water heater

[JEDI]

i have a deep soaking tub.

my current water heater (gas) only fills it about 1/2way till the water gets cold.

i only use the tub a few times a year, so setting the water heater to a higher temp wastes energy ($).

is there an instant hot water heater that will create hot water on demand?

 

[Quasmo]

http://www.tanklesswaterheaterguide.com/

 

[QED]

Where do you live?

When the hot water tank in our 1-bath condo died, I bought an (electric) instant hot-water heater on eBay for about $100.

I had to run a second power line to the heater, since it used 240v and a TON of amps when actually in use.

For the most part, it worked great-- endless showers for all, and our electricity bill was almost cut in half.

On the downside-- it did not provide enough output for someone to shower and wash the dishes (or even their
hands) at the same time. Also, when winter time came (I live in Cleveland) and the temperature of the water coming into the condo
dropped, the tankless heater could only heat it to something slightly warmer than lukewarm. This wouldn't be a problem somewhere
further south.

In hindsight, I think the best of both worlds would be to run the tankless heater in line right after a standard tank heater, and then
depending on your climate and desires set the tank heater to its lowest setting, or even off. Since the water in the tank will be passively
heated by the room around it, the tankless heater won't have to heat it as much to get it your desired temperature.

 

[Joemonkey]

Originally posted by: QED
When the hot water tank in our 1-bath condo died, I bought an (electric) instant hot-water heater on eBay for about $100.

Why do you need to buy something that heats hot water?

 

[Ika]

Originally posted by: QED
Where do you live?

When the hot water tank in our 1-bath condo died, I bought an (electric) instant hot-water heater on eBay for about $100.

I had to run a second power line to the heater, since it used 240v and a TON of amps when actually in use.

For the most part, it worked great-- endless showers for all, and our electricity bill was almost cut in half.

On the downside-- it did not provide enough output for someone to shower and wash the dishes (or even their
hands) at the same time. Also, when winter time came (I live in Cleveland) and the temperature of the water coming into the condo
dropped, the tankless heater could only heat it to something slightly warmer than lukewarm. This wouldn't be a problem somewhere
further south.

In hindsight, I think the best of both worlds would be to run the tankless heater in line right after a standard tank heater, and then
depending on your climate and desires set the tank heater to its lowest setting, or even off. Since the water in the tank will be passively
heated by the room around it, the tankless heater won't have to heat it as much to get it your desired temperature.

Your profile says South Carolina

 

[Jhill]

If you only use the tub a few times a year fill it with hot water until the hot water runs out then pour a huge pot of boiling water from your stove in in and fill it the rest of the way up with the luke warm water.

The boiling water will make the luke warm water hot.

Or, since you said you only use the tub a few times a year can't you just turn up your water heater when you use the tub, then turn it back down after?

 

[indamixx99]

When our water heater broke last year we considered getting a tankless, instant hot water heater. However, the $1000+ price tag for a unit that can run 2 simultaneous showers and sinks, plus the cost associated with professional installation quickly changed our mind.

 

[QED]

Originally posted by: Aflac

Your profile says South Carolina

C'mon, man... haven't you ever heard of Cleveland, South Carolina?!?! Sometimes in the wintertime
it gets down into the 50s. Bone chilling, I tell ya.




Just kidding... I live near Cleveland, OH now... but have lived in a lot of different places. I've never updated my profile, that's all...

 

[Pheran]

Originally posted by: QED
On the downside-- it did not provide enough output for someone to shower and wash the dishes (or even their
hands) at the same time. Also, when winter time came (I live in Cleveland) and the temperature of the water coming into the condo
dropped, the tankless heater could only heat it to something slightly warmer than lukewarm. This wouldn't be a problem somewhere
further south.

In hindsight, I think the best of both worlds would be to run the tankless heater in line right after a standard tank heater, and then
depending on your climate and desires set the tank heater to its lowest setting, or even off. Since the water in the tank will be passively
heated by the room around it, the tankless heater won't have to heat it as much to get it your desired temperature.

Err, I'd say the "best of both worlds" would be to purchase a tankless heater that is actually correctly sized for your output flow rate and incoming water temperature - it sounds like yours is not.

 

[QED]

Originally posted by: Pheran

Originally posted by: QED
On the downside-- it did not provide enough output for someone to shower and wash the dishes (or even their
hands) at the same time. Also, when winter time came (I live in Cleveland) and the temperature of the water coming into the condo
dropped, the tankless heater could only heat it to something slightly warmer than lukewarm. This wouldn't be a problem somewhere
further south.

In hindsight, I think the best of both worlds would be to run the tankless heater in line right after a standard tank heater, and then
depending on your climate and desires set the tank heater to its lowest setting, or even off. Since the water in the tank will be passively
heated by the room around it, the tankless heater won't have to heat it as much to get it your desired temperature.

Err, I'd say the "best of both worlds" would be to purchase a tankless heater that is actually correctly sized for your output flow rate and incoming water temperature - it sounds like yours is not.

Correct... mine probably was not correctly sized for flow rate and incoming water temperature. But it was the closest I could find that I could actually install and use (since it was in a condo I was pretty limited by the power line that actually fed my unit). And for $100, it was a steal-- even with the slight annoyances of not having super hot water in the wintertime and not being able to run more than one tap at a time.

But I could have alleviated both of those annoyances by simply using it inline with a tank heater.

 

[Jeff7]

Originally posted by: Joemonkey

Originally posted by: QED
When the hot water tank in our 1-bath condo died, I bought an (electric) instant hot-water heater on eBay for about $100.

Why do you need to buy something that heats hot water?

Maybe it's not hot enough.


Heat is a relative term. Compared to the water on Saturn's moon Titan, the water here is pretty damn hot. On Titan, it's all ice, frozen as hard as rocks are on Earth. Thus, when you heat water here, it's a hot water heater. So there!

 

[Rubycon]

Freeking symantecs and bad grammer everywere hear. Rediculous weather or knot tis true!

 

[Joemonkey]

Originally posted by: Rubycon
Freeking symantecs and bad grammer everywere hear. Rediculous weather or knot tis true!

Excellerant!