Like most of you here, I prefer to inform the customer of all available options, which will include the pros and cons of each, and then let him decide which direction he wants to go.
As someone said, quote all options and explain benefits for each choice.
Why wouldn't you quote a compressor too? In my mind if he doesn't want to buy a whole new system, a new compressor would be a better option than another R22 outdoor unit...
Like most of you here, I prefer to inform the customer of all available options, which will include the pros and cons of each, and then let him decide which direction he wants to go.