Roof/HVAC/Solar Recommendations

Does anyone have recent recommendations and good experience with installing a form roof for an Eichler, and what are the approximate costs for a 1780 sq ft residence in San Rafael? What size foam between 1 and 2 inches do you recommend?

Does anyone have recommendations and experience with installing an HVAC system, in particular the low profile unico system?

Does anyone have recommendations and experience with solar installation?

We are in the process of interviewing Wedge Roofing, Armstrong Roofing, Foam Roof Solutions, Bellows Plumbing, Downing HVAC? Do you have any experiences with these companies?

Eichler Network forum guidelines: For service company recommendations, please PM this poster directly, or post recommendations in the adjacent Rec Room forum.