Many of us are correct with the saying “choose wisely.” This is genuinely sage advice no matter what aspect of life you apply it to. For example, friendship. You genuinely should choose your friends wisely. If your friends don’t have your back when you need them, you sit to get into lots of trouble. Your education is another example. You should choose your college or lack thereof genuinely carefully, and for example, do you want to learn Shakespeare & Quantum physics or do you want to learn HVAC repair? Also your home, but choose wisely because it is likely to be your biggest investment, & you are likely to have to live in it & pay for for numerous years. Once in your home, you should choose your appliances wisely. This is especially tploy for your heating & cooling. The HVAC system you get is going to be extravagant, & if you get an cooling system that is not energy efficient, your heating & cooling bills are going to be too pricey each month! Generally speaking, the higher the SEER energy rating, the more efficient your HVAC is. At some point, but, the price of the HVAC system with the highest SEER rating becomes prohibitive. You should compare the up front costs & how long it will take you to recoup the price of the cooling system & heater. You can choose to put in HVAC with zone control & maybe even radiant floors. There are a lot of decisions to be made & a lot of chances available. Choose wisely, my son, choose wisely.