I have a rental property where system needs to be replaced. I have a used heat pump system from Goodman that I got from a condo that was being torn down. Looks like the lines were cut and doesn’t appear Freon a410 was pumped back into compressor. If compressor was not closed and empty and line sets are open to air, what would be issues. It has sat for about 4 years. Worked fine before it was removed. Any feedback on expected issues would be helpful.