Particles are generally a cause for concern when daily average levels are above 12 ug/m3. Particles are known to trigger asthma and allergy symptoms. At levels above 35 ug/m3, they can harm normally healthy adults by causing emphysema and diminished lung capacity. Children and elderly are more susceptible.
“Clean and neat.. Would recommend them. Took their time and did what they promised to do. They removed their shoes and are very courteous. They took the time to explain and answer all my questions and were not there to just hurry up and get out of there. Did it properly and promptly. Thank you for a fine job.”
“Excellent customer service! Was a complete pleasure to deal with John and Jay. Our ducts we extremely dirty and without asking John showed us the difference once he cleaned the system. A+++”