Yes, if I open them separately they seem pretty much the same, cold could be slightly faster but hard to tell. If I try the boiler at 45 degrees, run the hot, then add in a bit of cold the temp seems to fluctuate less than when the boiler is at 55. Hmmm
We had an old bath/shower mixer tap which worked well but looked bad, so we replaced with a very similar one, but now the water temperature fluctuates slightly from warmer to cooler about once a second, when using either the bath or shower. We have a combi boiler and it doesn't appear to be...