Remove and replace humidifier water canisters on 18 systems Remove and replace 210 air filter on 27 systems Remove and replace x2 20x25x1 for fresh air intakes Remove and replace 20x25x4 glassfloss filter for dessert Aire / test Clean flame sensors on pool house furnaces. Clean flame sensors car barn furnaces. Test run heat on each system verifying operation Clean minisplit washable filters for guard shack and main house garage