We have 1700 sqft house in Arizona. We are not hitting 105 all most everyday. Our A/C was running for long time and I had tech come and check it today. he said we have some kind of "chockup" in the system and so cold line needs to check up. He also said it is called TKV (Some valve system). The estimate for repair is very high.
Now he gave us option to replace the unit. He suggested 18 SEER York Afinity line unit. This is 4800 BTU (4 Ton) Unit. And price tag is huge but interestingly called around few places and price has huge variation. It was between York/Rudd/Goodman. My question is which A/C brand is better and why there is so much price difference? What approach should be used to make decision?
Thanks for help and your time in advanced.