"Should have qualified our location. Climate Zone 2, Santa Rosa where we had 1580 HDD in 2011 and have 1453 HDD to date.
So given "our mild climate zone," does anyone have data that supports the additional expense for a…"
Build it Green - Advanced Certified Green Building Professional
Efficiency First - North Bay Chapter
The Construction Coalition - Steering Committee
North Coast Builder Exchange - Board of Directors, Green Building Committee Chair
CalCERTS - HERS BPC