HVAC is not the area to skimp on obviously. I have new construction 3000 apx sq ft. with a full basement. We are zone 5 with cool summers but in my location I have very damp conditions every evening right off the lake. What is the best way to reduce the RH inside? We will have a very tight home so make up air is necessary. I hear words like venmar, HRV, ERV and I know I just don't have a grip on this. I don't want to heat just to dehumidify in the summer. What do I need? Also, is one unit less expensive than 2 units. A 120 output with 5 tons of cooling was priced out and then another wanted me to have 2 sets one for the walkout and the other unit for the rest of the 2 story house. I need the best energy approach I can get for the least monthly expense. Also, how do I know if my HVAC contractor is in the know and will do a good job prior to signing with him?