Which Seer rating should I pick? Help!
We are building a new home. The quotes came today for the HVAC. There were good, better and best options. All were the same except the SEERs. My choices are 16.5, 17.7 and 21.5. The house 3850 SF and one level. Its located in Central Texas so it's hot. Really hot most of the year. The quote is also for two separate units, one is 3 ton and one is 4 ton. We have propane. The price difference ranged from 17600 to 21200. I have no idea which to choose. Any advice would really be appreciated! Thanks!