Electric shower units, are they waterproof?

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Sorry, it's a silly question (I've used electric showers before, but never looked at one closely... ) I've bought a Mira electric shower and it doesn't seem very "water tight" to me. There's a very small gap at the top (between the front and back panels) and also the unit seems to have some water in it already. It's purchased from Argos and I'm worried that it is used. Could this water be from testing by the manufacturer?
 
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There should be a rubber seal between the front and back panels.

Water in there already - sounds like someone has already used it and returned it to the shop...
 
I don't think they will be "waterproof" as in they are not suitable to be submerged.
They have to be suitable for use otherwise Mira would be in trouble for selling it. Best check the instruction book.
You may find it is a unit which has been returned to argos from someone else.
 
Most showers that I have fitted have some water in the heating can as brand new, from testing that the manufacturers carry out.

As for how waterproof they are, they are adequate for the areas that they are designed to be installed in.
 
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The showers are splash-proof. the front/rear sections fit together with a tongue and groove with a rubber insert in the groove.

miras will have (*normally orange in my experience) plastic screw on caps on the inlet and outlet pipes to stop residual water from factory testing escaping. If these are missing it sounds like the units been tampered with.

*that said argos may have specific models not avalible elsewhere
 
Thank you very much for the replies!

There was an orange cap and a black cap. But no rubber insert between front and rear casing...
 
No, not all mfrs have that.

But the manufacturer should declare an IP rating which must be suitable for the environment it is designed to be put to work in.
 
Well I'm not sure, not about the Mira Sport with Airboost anyway,

I found this post because it's the very thing I'm looking at now.
The unit is protected reasonably well, apart from a hole in the back panel which I think is for the Airboost air intake. Trouble is, there is space all around the intake albeit small. But, if you poured water on the hole it would go inside.

Well no it wouldn't get water poured on it in use because it's at the back, but condensation would get inside if it ran down the back and tracked across the hole.

So I'm a bit concerned. It's almost as if the design was great until Airboost came along and where they just thought they'd put a hole there.

I wonder if they retested everything, hope so......

Dave
 

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