18 SEER for Virginia?

[buckeyefarmer]

I bought a geothermal unit for less and installed it myself.

 

[czechsonofagun]

Good decision on the steel duck work. If at all possible. I replace the Refrigerant line set when replacing R22 with R410 & pull a vacuum to 400 mc.. If it isn't possible to replace the line set. Be sure to perform a real good flush. Vacuum to 400 mc....R410A oil doesn't like R22 oil

I am going to do fresh install on cables and also on copper lines, I dont think flash is enough and the existing AC is very old.