Urusaku ruke rwerekana urusaku ni moteri ikoreshwa muri sisitemu ya HVAC (Gushyushya, Ventilation, na Air Conditioning) kugirango igenzure imyanya ya dampers (plaque igenga ikirere) hamwe n urusaku ruke rukora. Izi moteri zagenewe ibidukikije aho ibikorwa bituje ari ngombwa, nkibiro, ibitaro, amahoteri, ninyubako zo guturamo.
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