Putting in a new shower faucet, it's a dial 2 in one type.. We had hot water before, but now with the new faucet we only have lukewarm.. is there anything I can do to fix this?

Did you try to turn up your hotwater heater? Turn it a half notch every 24hrs. Until desired temp is reached... that might work!

Wendy, does the new faucet have scald proof valve? May be adjustable. Good luck

Parttime... good observation! I just recently put in a delta on my shower with the adjustable memory temp setting.. I wonder if it wasn't installed correctly.

YUP! Most likely the temperature limiting device needs to be adjusted. Consult the installation instructions or contact the manufacturer for more info... ;)

Good luck!

Mark