Shower runs hot, then cold, then hot.
December 23, 2012 10:41 AM Subscribe
My shower runs hot, then cold, then hot again under certain circumstances. What would cause this? Details within.
posted by Right On Red to Home & Garden (13 answers total) 1 user marked this as a favorite
My bathroom is pretty far away from my water heater, so it might take 30-60 seconds to get hot water from the tap. Pretty common situation, I know. I don't like the idea of wasting all that cold water, so rather than starting with the shower, I'll use the sink first and try to make use of the cold water while waiting for the hot. Then I'll get in the shower and the hot water comes right out without any wait. So far so good.
After a few seconds, say 10-20, of decent hot water, it turns completely cold for another 10-20 seconds, even if I max out the control. Then it returns to normal hot water and stays that way until I'm done. So what accounts for that intermediate burst of cold water? No one else is in the house using hot water, so that's not it. I'm thinking maybe the mixing valve in the shower is faulty somehow? Or is it possible the pipes are routed in some funny way? Something else? Not a big enough problem to call a plumber about at this point.