GeyserWise product

Installed one for my solar geyser, 2 years ago, very happy to date. Like the digital temperature readout and simple to use.
 
Guys, what does it actually do except for the fact that you can view the temp digitally of the geyser? oh, and i believe you can switch your geyser off and on with a remote - is it true?

Does it save you on your electricity bill?
 
HateTelkom said:
Guys, what does it actually do except for the fact that you can view the temp digitally of the geyser? oh, and i believe you can switch your geyser off and on with a remote - is it true?

Does it save you on your electricity bill?
Click to expand...

Like all timers controlling your geyser, it only works well to save electricity if you sync it with your water usage. I like the geyserwise, works well for me.
 
Was thinking about this over the weekend. Will really help and the advice on syncing it with water usuage now makes sense.

The one I'm interested in is the "MAX" version.
 
Goobie said:
Like all timers controlling your geyser, it only works well to save electricity if you sync it with your water usage. I like the geyserwise, works well for me.
Click to expand...

Please explain if you dont mind?

Does that mean setting it to heat up the water just before you will use your water and leave it off for the rest of the time?
 
HateTelkom said:
Guys, what does it actually do except for the fact that you can view the temp digitally of the geyser? oh, and i believe you can switch your geyser off and on with a remote - is it true?

Does it save you on your electricity bill?
Click to expand...

effectively a timer, also gives warning of overheating, element failure and hot water leaking. It has a probe with which you replace your current thermostat. The "remote" is a fixed unit on 5meter cable that you can mount conveniently and yes it has an override so you can switch your element on and off outside your programmed times if you so wish.

With time of use electricty tarriffs to be introduced it will save you money if you program heating into low cost off peak times.

I paid R700 from builders warehouse and installed it myself. There is also a unit called geyser wise max which has ability to switch a pump based n thermal probe differentials. ideal if you going to upgrade to solar later and want to switch the pump.
 
HateTelkom said:
Please explain if you dont mind?

Does that mean setting it to heat up the water just before you will use your water and leave it off for the rest of the time?
Click to expand...

correct. In my case I have an older type geyser that is not so well insulated. I added a blanket to it but still it would loose heat more rapidly than a newer geyser. We have a strict schedule in the morning to get everybody cleaned up. So now geyserwise switches the geyser on an hour (or so) before the first family member takes a bath and off as soon as the last member of the family gets into the bath/shower. Thus no heating of the water that will only be lost during the day.
 
I have adjusted the temperature of our geyser down to about 44 degree's (it's not exactly an accurate reading), which has brrought my daily electricity usage down to 14 kw/h from 20 kw/h, which was a joke, I was using the same amount of electricity as a freaking factory.

However, the geyser is really old, but it has a new thermostat and a new element.

In any case, an accurate means of measuring the temperature, as well as not heating the water at night may provide further savings, but, I am loathe to spend R1000 on a potential solution, whareas a new geyser is a little bit more expensive.
 
Watch out for Legionnaires disease, if you setting the temp lower on your geyser.

From wikipedia:
Temperature affects the survival of Legionella as follows:[15]

70 to 80 °C (158 to 176 °F): Disinfection range
At 66 °C (151 °F): Legionellae die within 2 minutes
At 60 °C (140 °F): Legionellae die within 32 minutes
At 55 °C (131 °F): Legionellae die within 5 to 6 hours
Above 50 °C (122 °F): They can survive but do not multiply
35 to 46 °C (95 to 115 °F): Ideal growth range
20 to 50 °C (68 to 122 °F): Legionellae growth range
Below 20 °C (68 °F): Legionellae can survive but are dormant
 
cbrunsdonza said:
Was thinking about this over the weekend. Will really help and the advice on syncing it with water usuage now makes sense.

The one I'm interested in is the "MAX" version.
Click to expand...


Same here. Just called them. R1200.00 or installed R1800.00. A bit steep.
 
Trix said:
Watch out for Legionnaires disease, if you setting the temp lower on your geyser.

From wikipedia:
Temperature affects the survival of Legionella as follows:[15]

70 to 80 °C (158 to 176 °F): Disinfection range
At 66 °C (151 °F): Legionellae die within 2 minutes
At 60 °C (140 °F): Legionellae die within 32 minutes
At 55 °C (131 °F): Legionellae die within 5 to 6 hours
Above 50 °C (122 °F): They can survive but do not multiply
35 to 46 °C (95 to 115 °F): Ideal growth range
20 to 50 °C (68 to 122 °F): Legionellae growth range
Below 20 °C (68 °F): Legionellae can survive but are dormant
Click to expand...
Cool, thanks.

I did some research, and heating the geyser to 60 degree's once a day for at least an hour is a way to kill the bacteria, but in general, not having stagnant warm water standing around for the bacteria to grow is the aim.

The chlorine concentration in the water has to be pretty high for it to take care of the bacteria, but I recon that we can count on the chlorine concentration levels in our water to be good enough to stifle the growth of the bacteria, the question is ... how much.

I guess that I am now stuck.

Do I risk our health-welfare for the electricity savings, and tell people not to inhale through their mouths in showers?
Or do I push the dial back up to 70 degree's and fork out over R700 a month for electricity?
Or ... do I get a different water heating solution?

Bleugh.

Question: Can I program the water-wise product to do the 60 degree's thing once a day for me?
 
I'll do my outmoust and save for an alternative solution - gas geyser or solar panels

Anyone wanna take a guess of what electricity is gonna cost in 5 years time? :)
 
Last edited:
davemc said:
Cool, thanks.

I did some research, and heating the geyser to 60 degree's once a day for at least an hour is a way to kill the bacteria, but in general, not having stagnant warm water standing around for the bacteria to grow is the aim.

The chlorine concentration in the water has to be pretty high for it to take care of the bacteria, but I recon that we can count on the chlorine concentration levels in our water to be good enough to stifle the growth of the bacteria, the question is ... how much.

I guess that I am now stuck.

Do I risk our health-welfare for the electricity savings, and tell people not to inhale through their mouths in showers?
Or do I push the dial back up to 70 degree's and fork out over R700 a month for electricity?
Or ... do I get a different water heating solution?

Bleugh.

Question: Can I program the water-wise product to do the 60 degree's thing once a day for me?
Click to expand...

You have 4 periods that are programmable. You can set the temperature and time for each. All you do is set lets say the 3rd set of settings to 60 degrees and the start and end times for this. The other settings can still be for 55 degrees.
 
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