Forget the showers, this last week or so has been sunshine 9 days in succession. How often is April like this? In fact it's another bright day today.
When the sun is shining the solarventi panel has reduced the bathroom humidity; 7am bath is run, humidity climbs to near 100%; with the panel operating in full sun, by 8:30 am the bathroom is registering humidity down to 45%, (bathroom norm by midday on an overcast day is still 65%) .
When I return at 5:30pm (before evening baths) the hygrometer is still measuring the bathroom at 50% humidity, and upstairs along from the bathroom the temp. has still been 23-24 degrees C. This is long after the sun has moved round the house away from the panel.
Downstairs away from the benefit of the hot air from the panel it has been cooler i.e. at the house norm of 20.
I find it very pleasant upstairs. The house is not normally as warm as 24 at 5:30pm even on a warm summer's day. The house doesn't have large south facing windows.
All this and temperatures outside the house have been moderate, between 10 and a max. of 18 degrees C.
So I am pleased with performance these last few weeks.