Building new home with ICFs/superior walls (Walk out baement) SIPs for walls main level and timber/truss for roof. To give you an idea I will have R-22+ for walls and close to R-50 in the roof (once close cell foam used). What My concerns are as I start the process of looking at different HVAC systems, is there is a lot of the deer in the head lights look from techs and "sellers" as they have not heard of what I am using for building with a result having such a tight envelope. My house is 2300SQ Ft each floor (finished). I am looking at a Heat pump (including dual fuel) but may go straight electric as I plan to tie in solar to meter within 5 years. I am looking at Lennox XP15 and XPG15, Carrier Infinity 16, and 15 and TRANE XL 15i/XL16i. Again their dual fuel sister models too. From what I can see:

Carrier 16 for the money beats out her sister 19 series. TRANE has the best warrenties but I know they will also cost the most. But Carrier has a history both good and bad on reliability so they right now are my last choice. I have used both Lennox and RUDD and satisified with both. I expect to have a lower than normal ton requirement with my house so that will save some money and will have to make sure ai have a good ventilation system added as well just to get fresh air in and circulate. My challegne is to decide what to buy as well as getting the bidders to understand when they do the J estimate for sizing about how well insulated I am. Has anyone else had this problem on getting bids? Is there anything I should be doing as I just go around and talk to different companies? I am in the soliciting astage for HAVC contractors.

Lisa from Virginia