Does Shelter Valley need desert-spec equipment like Borrego Springs?
Very close to it. With summer afternoons regularly hitting 105 to 115 degrees, Shelter Valley needs genuinely oversized cooling capacity by coastal San Diego standards, not the mild-climate default that works fine near the beach. We size to Shelter Valley's real desert-transition climate data rather than a countywide average, since undersized equipment here simply can't keep up on the hottest days.