The Location: Phoenix, AZ -this might be important because it's usually not this cold here

The Scenario: for the past few days (when temps have dropped into the 40's and *gulp* 30's over night), when I turn my shower on in the morning, the hot water trickles out. Same with the faucet in the sink. Eventually, it comes out full force and hot.

The problem: this morning, I go to turn my shower on and nothing. No water, hot or cold. Water still comes out the sink and the toilet flushes. No water to either bathtub in the house but all sinks work and toilets flush.

This is a '69 built home w/ copper piping. Any help you can offer would be appreciated! I would at least like to know what to tell a plumber when I call them so I may avoid multiple trips out...

Please help, thank you! :)

Danielle

*** New change: okay, after going back to all the faucets/tubs, I now have COLD water trickling out and the HOT coming out almost full force..? Please advise :(

for the past few days (when temps have dropped into the 40's and *gulp* 30's over night),
40's and 30's? "Hey! Move to Florida, we're in 70's and 80's here", he says as he attempts to hide a snicker.
I don't think the temperature has anything to do with your problem. I think some crud got in your lines and got sucked up in the shower valve cartridge where it's now clogging the inlet ports. Shut the water off and open up the vaqlve. Pull the cartridge abd check and clean the inlet ports on the cartridge. Before you button up turn the water back on to flush out the supplies and valve body. Good luck, Tom