Vaillant 837 Eco Tec plus boiler - enough for two showers?

[sacbina]

replacing crappy gloworm and plumber has quoted for above boiler. will need to power 2 showers, is this achievable? website blurb says it is, but.....
just filled 12L bucket in 1 minute. we have wet ufh throughout.

shameless evening bump

12lpm gives quite a good shower

but 6lpm each for two showers is very weedy.

Adjust your existing shower mixer to 6lpm, stand under it, see what you think.

It will be less when someone turns on another tap or flushes a WC.

Do you need to operate both showers at the same time?

second shower will only be used occasionally. it's in a yet to be built extension and are trying to plan ahead with two teenager.

thinking electric might be better option

electric will be useful when the boiler breaks down, but will be even weedier, especially in winter.

I got the above- I have two showers though rarely use the lower one. Seems ok and it's keeping our bigger house lovely and warm!

one shower at a time will be OK

are electric showers really that bad, never had one before

yes.

enough said, pigletjohn has spoken