> > i'm too close to san francisco bay. > > Why is that bad? I thought ground-source HVAC systems worked better if > the ground was saturated with water. Better thermal conductivity than > dry soil.
aside from the corrosive nature of the salt and other minerals, there is an unbelievable maze of permits from various layers of government since there's a protected marshland as well as habitat restoration within a few miles. i think it's safe to say that Sun Quentin could not be built under current rules. > My problem finding someone to install a ground-source system was that > everyone for miles is on city water. You have to be able to drill a > hole in the ground and the folks familiar with well-drilling equipment > are three hours away. i could drill in the warehouse, i suppose, and truck the slurry out by night.