Hollywood Hills whole home iaq system installation: what the audit measures before the quote
LADWP Consumer Rebate and TECH Clean California HEEHRA stack on qualifying Hollywood Hills heat pump projects, but the stack only files cleanly when the AHRI Directory match, the Manual J load report, and the HERS verification number all line up on the permit. Permits route through LADBS. Hillside Ordinance plus Very High Fire Hazard Severity Zone designation; plan check 4–8 weeks for hillside scope. Adding UV-C lamps in the supply plenum and calling the project "whole-home IAQ" without addressing return-side leakage, ventilation rate, or filtration depth. UV-C handles biofilm; it does not handle PM2.5 or VOCs.
ASHRAE 62.2-2022 mechanical ventilation rate formula: Qfan = 0.03 × Afloor + 7.5 × (Nbr + 1) CFM. An 1,800 sq ft, 3-bedroom Los Angeles home calculates to 0.03×1800 + 7.5×4 = 54 + 30 = 84 CFM continuous outdoor air.
Average summer high near 83°F with winter low around 48°F at an elevation of 1200 ft and roughly 10 miles inland. CEC Climate Zone 9. The cooling design temperature for Manual J calculations runs about 90°F, with typical Manual J load landing in the 380-500 sq ft per ton band. Marcus Reyes, P.E. assembles the rebate documentation alongside the engineering report so the filings move on the same timeline as the install. CARB 17 CCR §94800 ozone.