I have gotton a bid for an high velocity hvac system utilizing a lennox "complete system" 90% effcient with a 12 seer a/c and a heat pump also with some kind of jacketed water heat coil (inside the complete heat unit) as a back-up for the heat pump due to some colder periods we experience here in Nebraska. Does this sound like a good system to invest in?

FYI: We have an early 60's boiler system now with no ductwork, baseboard radiators, and 3 window a/c units for the summer. Home is 1.5 stories with full basement and has around 2700-2900 finished/unfinished squarefeet space.

Thanks,
-kk