I just replaced my Moen single handle cartridge and all was well until I turned on the water and the hot and cold are backwards... I turn to hot and it's cold.. I turn to cold and it's hot... how can I fix this?? :cool: Thanks, Christine P.S. It is for my bathtub

Take the handle off he faucet cartridge and turn the stem one half of a turn replace the handle and see if things are not right.

I am not familiar with the Moen single handle you have, am not a plumber, but see if this works, there should be a thin perhaps decorative cover on the very front of handle. Usually you can take a thin instrument such as a knife and pry it off thus exposing a screw, take the screw off, but before you pull the handle off, notice how it's installed, upside down or right side up and then put it back on the other way and reattach the handle by using the screw. There's a plumber here known as Speedball and he's been helpful to others here. So if you need help in a hurry, send him a private note in case he doesn't read your question. Let me know if you solved the problem and how if you don't mind.

Yeah, just take it apart and turn it upside down. The site discourages asking questions by PM or email.

https://www.askmehelpdesk.com/announ...-pm-45757.html

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There's a plumber here known as Speedball and he's been helpful to others here. So if you need help in a hurry, send him a private note in case he doesn't read your question. Let me know if you solved the problem and how if you don't mind.

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Y'know, there are enough qualified experts posting here to negate the need to constantly pester Tom with run-of-the-mill questions via PM's.

speedball1
Plumbing Expert Join Date: Jan 2003
Location: Sarasota, Fl.
Posts: 7,486



Re: Hot and Cold backwards

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Originally Posted by summer6726
Hey speedball,

I got my Moen single handle bathtub thing changed and it all went great until I turned on the tub and the hot is cold and the cold is hot... what have I done wrong?? Thank you so much for your knowledge and help! It's really nice to talk with someone who knows their from a hole in the ground. Have a great day. Christine

Good mjorning Christine,

You will be happy to learn that you did nothing wrong.
Simply remove the handle and reverse the cartridge stem 180 degrees. This will put the cold water on the right, hot on the left and make everything right in the world. Have a great weekend! Tom
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Lots of good advice but let's be a bit more specific:
Moen chateau- pulls out to turn on and turns left to right to change temperature. This type you can simply remove the handle and spin the brass spindle on the cartridge 180 degrees to change hot and cold.
Moen positemp- turns right to left to turn on cold then turning on warm then hot. This type you must remove the whole cartridge and rotate the whole cartridge 180 degrees to change hot and cold.