QRG Air Duct Cleaning has become the number one business for all kinds of mold remediation in Hyattsville, MD. We are fully bonded, licensed and insured business. We always use and recommend portable equipment to clean ducts. We are proud to follow NADCA recommended guidelines and use EPA certified products. Moreover, we are also certified by 100 sheet metal union and sheet metal worker. We have all the knowledge that is required to become qualified technician. We make sure to comply with OSHA standards of safety. First of all, our technicians perform thorough inspection of duct systems. We deal in duct installation, duct repair, dryer vent, HVAC systems, return lines, supplies and more. There is nothing too big or too small for us. We offer free estimates, economical pricing, exceptional customer services and original products to all our customers. We are highly regarded in the area. Most customers recognize us as a number one company. We always suggest in time services as any kind of delay can lead you to more complex problem and financial loss.