running

Hi all , i've just taken up walking on treadmill. trying to do at least 20mins a day walking on it if i can - this is from zero excercising , my daughter had a treadmill left in her house by previous owners and didnt use it so she has given it to me. only walking at 1.8kph at moment for...

We just changed to a combi boiler a couple of months ago. I am finding that we have to run the hot water for up to thirty seconds before it gets hot. Sometimes it runs hot then cold then hot again. It's a brand new boiler. Is this typical of combi boilers (I have never used one before)?