Last updated: 2 Jun 2026 | 14 Views |
Em, a 29-year-old freelance graphic designer in Lat Phrao, Bangkok, has worked from home for 5 years. She has had asthma since childhood, usually well controlled with an inhaler. But earlier this year, her symptoms spiraled out of control during back-to-back client meetings.
"A rush brief had me at the desk from 9 AM. By 1 PM my chest felt tight and my breaths were shallow. By the 3 PM Zoom I was wheezing, couldn't complete a sentence. My client got worried and asked me to rest."
Construction dust from a new condo project nearby, plus years of accumulated indoor dust, were triggering her asthma daily.
Asthma is a disease of hyper-reactive airways. WFH workers with asthma face higher cumulative exposure than office workers:
The WHO Asthma Fact Sheet reports 262 million asthma patients globally and 461,000 deaths each year.
"I was puffing every 3-4 hours, but the dust was still in the room."
1. Rescue inhaler — relieves but doesn't fix the source.
2. HEPA AC filter — only filters air through the AC, not air leaking in.
3. Frequent vacuuming — kicks up more dust.
4. House plants — pollen worsens asthma.
"My pulmonologist at Siriraj told me to put a real H13 HEPA purifier in my office and bedroom."
She compared 6 brands before choosing the Allergy Protection AP-907 because of: certified True HEPA H13, real activated carbon (1 kg) for VOCs, zero ozone (critical for asthma), and the professional after-sales service from World Health Disinfection used in hospitals and clinics.
Before: 4-5 rescue puffs daily. 2 missed meetings weekly. 4,000 baht/month meds. ACT (Asthma Control Test) score 12/25 = uncontrolled.
After: 0-1 rescue puffs daily. No more missed meetings. Meds dropped to 1,200 baht/month. ACT score 23/25 = well controlled. Doctor reduced her medication.
"Before AP-907, I turned down rush jobs out of fear of an attack mid-project. Now I take on full briefs, my client list has grown, my monthly income is up 15,000 baht. The purifier paid for itself in one month." — Em, freelance graphic designer, Lat Phrao.
Q1: What should asthma patients look for in an air purifier?
A: Zero ozone, certified True HEPA H13, and carbon for VOCs.
Q2: Room size for WFH offices?
A: 15-30 sqm — covers desk and seating zone.
Q3: Is filter replacement hard?
A: Takes 1 minute with the included guide. WHD ships authentic filters nationwide.
Q4: Safe for children and pregnant women?
A: Safe for all ages, including newborn rooms.
Q5: Warranty?
A: WHD provides product warranty and after-sales service.