I have a 5 ton unit but the got stuck and my budget can't afford to buy anather 1 so I find one very cheap and havet is a very expirenced ac thech and he told me I can make it wisrk with out any changes okey the one I got now is a5 ton with 10 seer and the coil is also a 10 seer the neww condenser is a 4 ton with 12 seer can I makeit work with out chanenge it the coil I just try to learn

First of all you need to be certified to do any refrigerant work. Are you certified and if so what is your EPA number.

Anything can be MADE to work but that does not mean it will work correctly. I do not recommend mismatched equipment and that is what you are trying to do.

To learn this industry you need to go to school pass all the tests get certified and then get 5 to 10 years field experience. I cannot teach you on this board.

Yes I am certified I don't haye my number handy is type universal by mainstream I have cash account with century ac in houston tx,I have read a lot but I don't have too much field exxx but I am just only 22

I would get someone local to show you how to do it the first time around since the pressures will not be ideal and the charge will be different. It will probably work but not the way it should unless you install a expansion valve. Good luck with your project.

i have a 5 ton unit but the got stuck and my budget can't affort to buy anather 1 so i find one very cheap and havet is a very expirenced ac thech and he told me i can make it wisrk with out any changes okey the one i got now is a5 ton with 10 seer and the coil is also a 10 seer the neww condenser is a 4 ton with 12 seer can i makeit work with out chanenge it the coil i just try to learn
Hay Ray do all of us a Favore and do a load calculation ,then select your equipment per load. Don t start learning and installing half in this hvac industry. Never mismatch equipment. 10 seer equipment is history. Do it right the first time around so us hvac techs won't have to fix your mess

And also try to get a better grip on the English language,, makes for better communication

It should work fine to get you out of a pinch. I agree its not the factory specs per install but it will work. Your not going to have the 60,000 BTU of cooling any more its going to be 48,000. The good side is you just made the 4 ton system work with a higher SEER now that you have more evaporator coil surface.