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Question 1: Are they a NADCA certified company?
Question 2: Do they clean the entire system, including all the equipment?
Question 3: Are they using a truck mounted Power Vacuum that moves 16,000 cubic feet of air per minute?
Question 4: How long have they been cleaning HVAC systems?
Question 5: Do they have a NADCA Certified Ventilation Inspector on staff?
Question 6: Do they specialize in source removal of smoke, mold, water, particulate and contaminants?
Question 7: Can they provide photo/video documentation before and after the system is cleaned?
Question 8: Are they a mechanical contractor?
Question 9: Are they an A+ member of the Better Business Bureau?
Question 10: Are they a local, family-owned small business?