I am trying to get my washer hose off of it's supply valve. It seems to be rusted on and I have tried heating the threads of the hose to get it off along with reefing my guts out. I am worried about breaking the tap off of the supply line from the basement. Does anyone have any suggestions other than call a plumber. I am about to pull the plumbing right from the basement....lol!

 

Hussar, Welcome to the DIY Forums.
Couple things to try. WD-40 is a penetrant that you spray on and tap the corroded fitting lightly and let sit for a little while. If the hose connector is rusted on the outside at the bottom of the fitting, spray there too.
Next one is vinegar, it could be mineral deposits that you are fighting with. Soak the fitting down with it and let sit a while.
Make sure you are turning it counterclockwise as you look at it IF it is sticking straight out (horizontally) but clockwise if it is looking down from the valve. You would not be the first person to fight a connection just to find it was being turned toe wrong way. Good luck.

 

My way...W-D 40, two wrenches, one to keep from twisting off the supply valve, the other with a piece of pipe on the end to make the handle longer (cheater bar). I would turn the water off of that line first, just in case. Cussing only helps some of the time. Good luck.