I recently noticed a weird trend: when I turn on the shower, it is hot first but then water starts dropping in temperature pretty quickly so that every 30 seconds or so I need to adjust the shower to raise the temperature. This started happening a few days ago -- about the time we started our kitchen remodeling when we demolished everything and, among other things, disconnected the old sink and the dishwasher. I am wondering if this has something to do with the problem. By the way, it has never happened before, i.e. unless several people were taking a shower before me for extended periods of time, temperature would not drop at all. Also, I tried raising the temp setting on the boiler. This gave the expected result: while the water would be hotter initially, it would steel get cooler. The same thing happens in all two of the three showers we have in the house, and we don't use the 3rd one. What's happening? Thanks much!