300L Solar Geyser recommendations Bloemfontein

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daniellgr said:
How far apart from the main home is the granny flat?
Are you planning to replace both existing geysers with one solar geyser setup?
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Okay, as the Granny flat is not going to leased out on a permanent basis, and given that it is part of the main building, providing one source of hot water makes sense.

However, I would not go for a system that does not provide for a backup electric heater element.
 
Think suntank is the winner. See they offer a 400 litre version. If my roof can handle the weight I would consider this depending on price.

Edit: after checking hellopeter I think I will look further for a solar geyser brand. Simply cannot take the risk on suntank.
 
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Seems funny.

How often is the granny flat used? Why not just use a small one there. Otherwise you've got all the risks/losses associated with plumbing from the solar to the granny flat etc. If it's only used a few weekends a year, then you can just switch the geyser on when it's being used?!
 
richjdavies said:
Seems funny.

How often is the granny flat used? Why not just use a small one there. Otherwise you've got all the risks/losses associated with plumbing from the solar to the granny flat etc. If it's only used a few weekends a year, then you can just switch the geyser on when it's being used?!
Click to expand...

Couldn't it cause damage in the long run to have a solar geyser heating water day after day for say 6 months at a time without using that water??

Granny flat will be used a few weekends a year yes. But in the long run, it could be used everyday if a family member moves in.
 
ambroseg1 said:
Couldn't it cause damage in the long run to have a solar geyser heating water day after day for say 6 months at a time without using that water??.
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Could be - they should have heat-control valves to vent as they get hot... But more importantly, the heating element will still come on at 2AM - because that's what they do... unless you switch that off... In which case you may as well have a much cheaper old-style electric geyser and use that instead!

Surprise surprise - you need to have some idea of how much you plan on using something before investing in it!
 
Some advice required.

I do not have a solar heater but want to be ready with a plan when next my electric geyser requires replacement.

There are 4 options:

(1) PV Installation where a normal electric geyser ( DC or AC element) is driven by Solar Power (PV)
(2) Use a Heat Pump instead of Solar
(3) Install an Indirect Solar heating system by using standard electric geysers with a special heat exchanger type replacement element
(4) Install a direct Solar Heating system, where the existing geyser/s is/are replaced completely with a Solar Heating setup.

This option has two option in turn, a high pressure and a low pressure setup.

What are the advantages and disadvantages of each ?
 
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