R-Pro › Field cases › Air conditioning
Indoor Mold/Smell Removal — Chemical Clean + UV-C Sanitize
Likely causes
Mold = Aspergillus/Penicillium dominant on pan/evap/blower
Check: **Symptoms**: ① 'Musty/foot odor' 5 min into operation (mold VOCs). ② Allergic users sneeze, runny nose, cough during run. ③ Visual: black spots on evaporator/pan. ④ Japan/China data: 3 yr uncleaned = 90%, 5 yr = 100% mold detection. ⑤ Korea: spikes after monsoon (Jul-Aug). **Health impact**: asthma, allergic rhinitis, pneumonia in immunocompromised. WHO: indoor mold can shorten life by 1-2 yrs.
What to do: **5-step cleaning**: ① Disassemble (panel/filter/pan/blower). ② Primary wash (neutral detergent, lukewarm 35°C, 30 min soak). ③ Sanitize (benzalkonium chloride 0.1%, 5 min on pan, rinse). ④ UV-C 15 min, 30 cm, eye protection mandatory. ⑤ Dry, reassemble, run 30 min check (deodorant only masks - useless). **Anti-microbial coat**: chlorhexidine (lasts 6-12 mo). Cost ≈ ₩100-150k, 1.5-2 hr. Recommend yearly (post-monsoon) or biennial.
Show before/after photos to user = best driver of repeat service. Japan/Korea: chlorhexidine coating recommended after 6mo/1yr (monsoon climate). Home UV-C lamp ₩30-50k available but only tech should run (responsibility). Post-flu/covid season = sanitize requests surge. Use Apr-May ads to capitalize.
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