Windows – does CA Title 24 preclude SHGC > 0.30?
Building in Zone 3 with 3500 HDD, lots of shade in the west and I want to warm the house with the sun in the morning. Planning to use Marvin Integrity windows, and I asked the vendor for low E1 for the east facing windows – but he said “The reason they don’t offer LowE 1 is that it does not meet California Title 24 Energy code requirements for SHGC, which is 40 and needs to be 30 or below.”
Does CA Title 24 really forbid SHGC > 0.30?
I’ll be using low E2 (SHGC 0.30) elsewhere, with awnings on south and west. Is low E1 / SHGC 0.40 a mistake on the east windows?
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