Wildfire smoke HVAC filtration in Glendale with a real smoke mode.

Glendale clean-air planning for the next AirNow event

Glendale 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).

Glendale was outside both fire perimeters but downwind of the January 2025 events. Not directly burned by the Eaton Fire (which sat 5 miles east), but Glendale received smoke and ash plumes for the duration of the fire. Verdugo foothill homes saw heaviest deposition.

smoke and dust entry around old returns, window leaks, and poorly sealed equipment closets

Glendale smoke audit pattern (91201-91208)

Glendale projects route through Glendale Water and Power as the municipal electric utility, which runs its own rebate channel separate from LADWP. Verdugo Woodlands and Adams Hill audits typically encounter post-1990 Armenian-influx renovation work where the original HVAC was extended into expanded floor plans without re-sizing the ducts. The result is a 3-ton system serving what is now 2,800 sq ft instead of the original 1,800 sq ft, with bedrooms at the new addition end of the trunk running 6–9°F warmer than the hallway thermostat. Glendale Community Development residential mechanical permits typically clear in 1–2 weeks counter when the project does not touch hillside grading.

Ventilation, recirculation, and the controls homeowners actually use

Operating mode tied to AirNow PM2.5 (the practical decision data): three states documented in the install handoff. The threshold values, the actions taken at each state, the filter SKU and replacement schedule, and the portable HEPA placement.

Glendale was outside both fire perimeters but downwind of the January 2025 events. Not directly burned by the Eaton Fire (which sat 5 miles east), but Glendale received smoke and ash plumes for the duration of the fire. Verdugo foothill homes saw heaviest deposition.

smoke and dust entry around old returns, window leaks, and poorly sealed equipment closets

Maintenance schedule that works during smoke season

Filter media budget across a "normal" year: $160–$320 (two replacements at 6 months). Across an active smoke year (multiple AirNow events): $480–$960 (5–8 replacements). Across a year like 2025 with the Eaton and Palisades fires plus normal summer wildfires: budget in the $640–$1,280 range. The handoff packet includes the part number and the re-order link.

Glendale was outside both fire perimeters but downwind of the January 2025 events. Not directly burned by the Eaton Fire (which sat 5 miles east), but Glendale received smoke and ash plumes for the duration of the fire. Verdugo foothill homes saw heaviest deposition.

hillside anchoring, clearances, electrical paths, and quiet equipment placement

Call dispatch with your AirNow screenshot

Three smoke-mode questions Marcus answers in every Glendale 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.

Glendale was outside both fire perimeters but downwind of the January 2025 events. Not directly burned by the Eaton Fire (which sat 5 miles east), but Glendale received smoke and ash plumes for the duration of the fire. Verdugo foothill homes saw heaviest deposition.

Audit fee credited against installed scope.