2 showers off one combi boiler?

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is this possible?

Boiler is an Ideal Mini C29 installed roughly 2001 (few years before I bought the house)

Currently have a Mira Atom ERD running off this, and would like to fit another in a new upstairs toilet.

Any advice appreciated
 
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as said if they are not both running at the same time you wont have any problems
 
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Thanks

If they were both running, would it just mean the pressure in each would be reduced?
 
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Would a single normal small head shower perform better or perhaps just get an electric?
 
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Hot&Cold

If they were both running, would it just mean the pressure in each would be reduced?
There are a lot of unique onsite depends come into the situation.During dual shower use, water pressure will fluctuate to an extent that the (correctly calibrated thermostatic) shower mixers may sense a safety fault and cut the hot water flow during fault conditions.

So much depends on the property's incoming water mains flow & pressure. they vary and are not guaranteed.

:cry:
 
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Hmm making me think an electric might be better option which is a shame.

It will day to day be our main shower but almost seems pointless adding a second shower to the house if only one can be used at a time
 
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An electric shower may not be a suitable option. You need check the pressure and flow rate of your incoming supply. In a direct combi system, all outlets share the same mains supply. What happens to your current shower if a toilet is flushed elsewhere in the property? If there is a noticeable drop in performance then the same is likely to happen when both showers are going. Having said that, we run two showers off a combi and even when we had three teenagers in the house, with a bit of consideration, it was very rare to have both in use at the same time. I wouldn't have electric as your main shower as performance will be poor compared to the one off the combi. One possible benefit of going electric for a second shower could be that you have a back up hot water source if/when the combi breaks down.
 
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Yup, it can be done, how acceptable they'll both be is another question. The usual agreed standard is that a combi will only really satisfy one HW outlet at a time.

The cold water pressure and HW ouput of your boiler (your C28 is only about 11L/Min @ 35Deg) are key. With some clever tweaking at the shower end - with flow limiters and water saving shower heads etc - then an acceptable balance can be found but it does need careful setting up, managed it a couple of times with bigger boilers and a 3bar, high flow mains.
 
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