Last night we were doing some plumbing work- using PEX to pipe a new bathtub and tie it in to our existing lines, so we shut off both the hot and cold water, piped everything, and since last night the hot water has been running intermittently cold.
As in, it will run hot for 30 seconds, then a blast of cold, then luke warm, all within the span of a couple minutes.
Is it a coincidence that this happened right after we shut the water off and messed with the plumbing? Hard to believe! What could be causing this?
The water heater is electric and less than 1 year old- standard tank style. We tried reseting the power to it at the breaker and running the hot for a while, listening, and confirming the heater was indeed turning on and heating, and it is.
Any suggestions? Thanks guys!
EDIT: For clarification, this is happening at all spigots- not just one (kitchen sink, bathroom sink, tub, and shower), on both two-handle and one-handle type faucets.