The wife and I are currently in the process of building our first new home and I am doing my own contracting. I have gotten estimates for heating and air and I am a little over whelmed.
A little info. We are building in SW Missouri. Our new house will be approx. 1650 sq.ft. with a 1100 sq.ft. walkout basement. We have no plans on finishing the basement right away, but will propbably finish out in 5-10 years.
I seem to be getting 2 different schools of thought on my situation. I'm not sure who to believe because I think they are all telling me their way is the best. Some of the estimates I have gotten are for one 5 ton unit to handle both the main floor and the basement. The other estimates are for one 3 ton unit for the upstairs and a 1.5 to unit for the basement. Which is truely the better option? I'm leaning towards the single 5 ton unit and here is why. While the basement is unfinshed, I will leave the vents mostly closed so that the single unit just works on the main floor. Once the basement is finished, I will force more heat towards the basement and force more cooling towards the main floor. Am I way off on this? Keep in mind I now very litle about heat and air.
I'm leaning towards a 5 ton Lennox XP16-060 14.7 SEER or a 5 ton Lennox XP15-060, 15-16 SEER. I'm going to try and hit a mid point between cost and efficiency.