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2923 posts

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#265562 28-Jan-2020 11:41
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Building a new house. Is it worth having a controller in every room that has hot water. I.e., would it be annoying to not have one in the laundry?


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334 posts

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  #2408027 28-Jan-2020 11:47
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You typically only have two of these. Main Bathroom and kitchen.
Its main purpose is to set a priority of water temp as well as the actual water temp up to 50 in bathrooms and 55 in kitchen. 

 

One acts as the master, the other a secondary.

 

In most cases, its never touched.


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Ultimate Geek


  #2408030 28-Jan-2020 11:54
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Mabey kitchen and bathrooms we change it very rarely, not sure why we even went with 2 of them . They are pretty much set and forget

 
 
 
 


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  #2408043 28-Jan-2020 12:03
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We had four of them in the previous house that we built, which was the maximum the califont could support.
There was a bigger bathroom controller in the main bathroom that had the bath in it, one in the kitchen/scullery, which was set as the master, one in the guest ensuite bathroom and one in the master ensuite bathroom.

 

All units could turn the hot water on or off and the temp you wanted it to be, which from memory ranged from 38 to 50 degrees, except the master kitchen unit could go up to 55.
The bigger bathroom unit you could also set how many litres of hot water was allowed, which was great for filling the bath.
The water would turn off automatically when it reached the set number of litres so you could start the bath filling and then forgot about it.
It would notify you when the water was stopped so you just had to remember to turn the tap off again and press a button on the controller to return it to normal.

 

When we wanted hot water in the laundry we just used the unit in the main bathroom as it was just next door.




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  #2408047 28-Jan-2020 12:10
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Thanks for the feedback.

 

We are currently quoted for 2, kitchen and ensuite. We opted for the ensuite instead of the main bathroom as we don't have kids and that bathroom will seldom be used, but I'm wondering if it's a mistake not having one in there?


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  #2408048 28-Jan-2020 12:11
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I agree with Jiriteach, you only need one in the kitchen and another in the bathroom/s.  It is a bit of a pain to have to check what the temperature is set on when you require hot water in the laundry.  A few steps into the kitchen to check and maybe adjust, is sometimes required.

 

I have renovated and lived in four houses now where we have fitted gas water heaters and we haven't plumbed a cold supply to the shower or bath.  Just make sure the controller is within reach of the shower/s, up high where it can be reached from either in or out of the shower.  Temperature is then adjusted with the controller buttons.  If you require cold in the shower, simply turn the gas heater off at the nearest controller.

 

Further to fitting a new house, my strong advice regarding the taps you choose would be to have individual controls and not single-lever mixers.  The reason is that when individuals approach a single-lever mixer it is natural to simply actuate the lever in whatever position it is, even if you only require a bit of cold supply to rinse hands or whatever.  That immediately fires up the gas machine with a starting burst of gas etc etc.  With an individually controlled mixer, a conscious decision is made; hot or cold.  We have found our gas bottles last much longer this way and I'm sure there is less maintenance for the gas water heater.

 

 


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  #2408050 28-Jan-2020 12:14
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Paul1977:

 

Thanks for the feedback.

 

We are currently quoted for 2, kitchen and ensuite. We opted for the ensuite instead of the main bathroom as we don't have kids and that bathroom will seldom be used, but I'm wondering if it's a mistake not having one in there?

 

 

Ensuite works. These controllers will really not get much use at all. In our current place which was completed in November - we have 2 in our kitchen and ensuite. They are literally never used apart from restarting the heater when the power has gone out.

 

We have a little one and could set the temp to make up the water in the bath but thats just an extra effort.


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  #2408063 28-Jan-2020 12:28
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Not sure why the others have said they don't but we used our controllers all the time.

 

My wife and kids liked to have pretty hot showers and me not so much, so having the controllers was great as you can easily set the temp you want and then just have the shower mixer on full hot.
No mucking around with finding the temp with the mixer while in the shower and no chance of getting burnt or cold if someone else turned on a tap, the water pressure would drop a little but no change in the temp.

 

And as Juicytree alluded to, setting the controllers and forgetting them will use more gas. If you leave them at a high temp and then use the mixer in the shower to add cold water you're using extra gas to heat the water hotter than it needs to be only to cool it down again immediately.

 

 

 

 


 
 
 
 


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  #2408074 28-Jan-2020 12:50
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Agree that it's wasteful (of $ and gas) to overheat the water just to cool it again.

 

But there's another reason to just heat the water to the temperature you like - if you do that and have the mixer on full hot then your shower temp is unaffected by peeps using other taps in the house - whether hot or cold. Sure the flow might be reduced if others in the house use water, but the temperature should stay roughly the same. No more freezing/scalding as some unthinking person surprises you in the shower.

 

Also, think of your reduced carbon footprint by not overheating the water (at the risk of inciting responses from those who would say get rid of the gas water heater altogether and use electricity - but before such persons do respond, please read this report: Consumer Energy Options in New Zealand 2016 Update)


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  #2408200 28-Jan-2020 13:44
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We retrofitted a Rheem Infinity system into our (ancient) house a few years back, and I recall asking here about the need for controllers; I'm pretty sure I was told they weren't necessary, and despite my usual completist personality that needs everything done fully, I listened and didn't get any controllers installed. Our comparatively low gas bill (hovers around $50 a month) means I don't feel we made the wrong call and I have never once missed having them  

 

I get that there's more logic installing them in a new build, but are they really essential? We don't find any problems without them, eg no noticeable temperature fluctuations when others are using the hot water. Personally I think more effort should be put into things like appropriate placement of the unit. My in-laws' place is the worse for this, where the original owners of the house had it installed half-way up the wall of a two-story house and then seemed to run the pipe to the kitchen via the Moon as it takes well over a minute to run 'hot' (and I use that term generously, as it always seems to be luke-warm by the time it arrives). It's even more frustrating as the red/blue marking on the kitchen faucet is missing, so I never remember which way is hot - and so in practice it can take forever!




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  #2408204 28-Jan-2020 13:47
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OK, so what is the benefit of the Deluxe Kitchen Controller over the standard controller?

 

I understand the Deluxe bathroom one, as it will stop the water when the bath is full. But what does the Kitchen one do?


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  #2408216 28-Jan-2020 14:10
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Paul1977:

 

OK, so what is the benefit of the Deluxe Kitchen Controller over the standard controller?

 

I understand the Deluxe bathroom one, as it will stop the water when the bath is full. But what does the Kitchen one do?

 

 

I think the only advantage of that one is that it links to the deluxe bathroom controller so the voice prompts can be heard from there as well, when the water stops etc.
So if you don't have the deluxe bathroom controller then don't get the deluxe kitchen one.

 

 


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  #2408286 28-Jan-2020 16:04
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In our build, we have specified 2 controllers. Deluxe in kids bathroom as that is where the bathtub is and a standard controller in ensuite. We put in a Stiebel 15l water heater tank in scullery for instant hot water as distance was going to be a bit from main gas califont unit to scullery.




Do whatever you want to do man.

  

29 posts

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  #2409406 28-Jan-2020 23:28
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jonathan18:

 

We retrofitted a Rheem Infinity system into our (ancient) house a few years back, and I recall asking here about the need for controllers; I'm pretty sure I was told they weren't necessary, and despite my usual completist personality that needs everything done fully, I listened and didn't get any controllers installed. Our comparatively low gas bill (hovers around $50 a month) means I don't feel we made the wrong call and I have never once missed having them  

 

I get that there's more logic installing them in a new build, but are they really essential? We don't find any problems without them, eg no noticeable temperature fluctuations when others are using the hot water. Personally I think more effort should be put into things like appropriate placement of the unit. My in-laws' place is the worse for this, where the original owners of the house had it installed half-way up the wall of a two-story house and then seemed to run the pipe to the kitchen via the Moon as it takes well over a minute to run 'hot' (and I use that term generously, as it always seems to be luke-warm by the time it arrives). It's even more frustrating as the red/blue marking on the kitchen faucet is missing, so I never remember which way is hot - and so in practice it can take forever!

 

 

Agreed, we have had three houses with gas instant-on heating; one had two controllers, one had one controller and the other had no controller (set by default to 50 degrees, I think)

 

We never changed the settings on any of them.

 

If you want a different temperature in the shower or where-ever, you use the knobs there. (that's what they are for)  If your kids are old enough to shower themselves, they will be able to cope.

 

As for heating up the water and then cooling it down again, that is not what happens - you just draw off less hot water.


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  #2409413 29-Jan-2020 00:03
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decibel:

 

jonathan18:

 

We retrofitted a Rheem Infinity system into our (ancient) house a few years back, and I recall asking here about the need for controllers; I'm pretty sure I was told they weren't necessary, and despite my usual completist personality that needs everything done fully, I listened and didn't get any controllers installed. Our comparatively low gas bill (hovers around $50 a month) means I don't feel we made the wrong call and I have never once missed having them  

 

I get that there's more logic installing them in a new build, but are they really essential? We don't find any problems without them, eg no noticeable temperature fluctuations when others are using the hot water. Personally I think more effort should be put into things like appropriate placement of the unit. My in-laws' place is the worse for this, where the original owners of the house had it installed half-way up the wall of a two-story house and then seemed to run the pipe to the kitchen via the Moon as it takes well over a minute to run 'hot' (and I use that term generously, as it always seems to be luke-warm by the time it arrives). It's even more frustrating as the red/blue marking on the kitchen faucet is missing, so I never remember which way is hot - and so in practice it can take forever!

 

 

Agreed, we have had three houses with gas instant-on heating; one had two controllers, one had one controller and the other had no controller (set by default to 50 degrees, I think)

 

We never changed the settings on any of them.

 

If you want a different temperature in the shower or where-ever, you use the knobs there. (that's what they are for)  If your kids are old enough to shower themselves, they will be able to cope.

 

As for heating up the water and then cooling it down again, that is not what happens - you just draw off less hot water.

 

 

Yip. No one changes the temperature of their hotwater cylinder when they have a shower so the vast majority of people don't do it with a califont. YMMV but it's a very niche use case.


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  #2409414 29-Jan-2020 00:06
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You'd want a temperature controller if your shower has a retro style single turn mixer.

 

I wouldn't bother with bottled gas hot water as it loses the cost advantage versus mains.


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