Surveyed indoor air quality issues. Discovered the homeowner has (2) separate systems. Both are Trane pump systems. Discussed the benefits of air duct cleaning and also air purification Halo LED devices. Homeowner gave verbal authorization to schedule the duct cleaning and the installation of (2) air purification devices. Details are listed in estimates. Copy of each emailed to homeowner. N/C to survey. Filter sizes for homeowner reference are 20x20x1.