Wildfire smoke HVAC filtration in West Hollywood with a real smoke mode.

West Hollywood clean-air planning for the next AirNow event

West Hollywood smoke planning starts with three measurements: total external static at the air handler (decides what filter the system can carry), return-side bypass leakage (decides whether MERV 13 actually filters the return air or 18% slips around the door), and AirNow station data for the address (decides operating-mode trigger thresholds).

West Hollywood was outside both fire perimeters but downwind of the January 2025 events. Not affected by the Palisades or Eaton fire perimeters, but smoke and AQI events on multiple days drove indoor PM2.5 above acceptable levels in apartments without sealed return cabinets.

smoke seeping through corridor doors, bath fans, roof penetrations, and leaky filter slots

West Hollywood smoke audit pattern (90046, 90048, 90069)

West Hollywood projects almost always start with HOA bylaws and a sound rating sheet. The city sustainability ordinance restricts gas appliance installation in many new-build categories, which means heat pump or ductless is often the only legal path. Norma Triangle and West Hollywood West condo projects routinely involve roof access coordination through building engineers, condensate pump specifications because gravity drainage is rarely available, and dBA studies showing the proposed outdoor unit will not exceed neighbor-unit-line limits. The West Hollywood Building Department reach codes for electric-ready infrastructure layer on top of standard Title 24 §150.0(o) ventilation requirements.

Ventilation, recirculation, and the controls homeowners actually use

What West Hollywood homeowners often get wrong: continuous fan-on year-round. The blower runs 24/7 even when AQI is excellent, energy bill jumps $50–$80/month, filter loads in 90 days instead of 9 months. Fix: tie fan-on to AirNow thresholds, not a permanent setting.

Other patterns Marcus catches: thermostat set too low during smoke event creates condensation on supply registers; bath fans left on during heavy events pull outdoor air through unsealed envelope gaps; kitchen hood without makeup air pulls infiltration through dirty paths.

HOA approvals, line-set routing, roof equipment coordination, condensate pumping, and neighbor-sensitive sound

Pricing context for filter cabinets, IAQ packages, and clean-room ductless

Maintenance schedule the homeowner can actually keep: filter inspection monthly (visual loading and pressure check on the smart thermostat where available), filter replacement triggered by AirNow PM2.5 cumulative exposure (formula in the handoff packet), blower compartment cleaning every 2–3 years, coil inspection annually.

HOA approvals, line-set routing, roof equipment coordination, condensate pumping, and neighbor-sensitive sound

A good plan names what is inside the unit, what sits on the roof, and what requires building access before quote day.

Call dispatch with your AirNow screenshot

Three smoke-mode questions Marcus answers in every West Hollywood audit: (1) what is the realistic indoor PM2.5 reduction the central HVAC can deliver during an event; (2) which room becomes the clean room and what portable HEPA size belongs there; (3) what filter SKU and replacement interval matches the household's tolerance for maintenance.

West Hollywood was outside both fire perimeters but downwind of the January 2025 events. Not affected by the Palisades or Eaton fire perimeters, but smoke and AQI events on multiple days drove indoor PM2.5 above acceptable levels in apartments without sealed return cabinets.

Audit fee credited against installed scope.