When not in use, a hot-water radiator will fill with air, and that can cause problems when you switch it on after months of inactivity. Before turning on your system for the season, bleed the lines of any air. To do so, switch on the heat and the radiator. Locate the vent at the top of the radiator, unscrew it, and let the hot steam escape. Once the trapped air is gone, water will begin to drip out of the radiator. Catch the water with a cup, and screw the vent cap back into place.
Just as you need to bleed your radiator pipes of air, you need to bleed your backyard pipes of water. Autumn is the perfect time to drain a sprinkler system of standing water, which can burst pipes as it freezes and expands. Using either a manual or automatic drain valve or compressed air, remove the water from the pipes. When spring arrives, you'll have no trouble getting things flowing again to keep your garden green all summer long.
Time to put outdoor furniture back indoors—for now. Wipe down plastic patio furniture, rub wicker with tung oil, and check metal chairs and tables for signs of rust. After the furniture is clean and dry, fold it up and place it in the garage, shed, or basement to overwinter. If you don't have space to store patio furniture indoors, consider purchasing all-season covers made of vinyl or plastic that can provide a modest amount of protection from winter rain and sun.