First of all, before I talk about this I need to say that most people involved is totally safe.
They are in the section of the wildfires out west, in fact they are completely surrounded by wildfires! But our acquaintance in addition to her family are all genuinely safe, because they live above the timberline, so there is no forest to catch fire up there. But even though they are safe from the flames, they are still trapped at home, in addition to as the fires worsen so does the outdoor air quality, so to breathe actually they need to stay in the house, but she sends pictures of how the entire sky is tinged red in addition to red, love the world is on fire, in addition to even at that altitude they have needed the home HVAC plan to keep safe. The smoke engulfs there entire property, at times for hours on end, so the air filters in the central HVAC plan are regularly in use, even when the heating isn’t turned on the fans stay running. The air had to circulate constantly, in addition to she has gotten pathological about checking the air filters more than one or three times a morning to make sure they aren’t getting too dirty. Thankfully she has an extra package of 12 air filters in her garage, however she is still genuinely anxious so she keeps the old 1s in addition to tries to scrap them as wash as possible, and hopefully it will burn out swiftly, but if they end up trapped on the mountaintop for a longer period of time, she may have to reuse in addition to recycle those HEPA air filters.