Not the way it’s done up north. A typical install here buries the plumbing below the frost line, so the underground portion of your system is already protected — you don’t need to “blow out” the lines the way homeowners further north do. It just isn’t necessary in Deep East Texas.
The one part that does need attention is your backflow preventer, since it sits above ground and is exposed to the air. Before winter, we open the ports and drain the water out, then turn the handles so everything stays open — that lets any remaining moisture inside the backflow evaporate rather than sitting there and freezing. We also recommend covering the backflow and any exposed pipe with multiple layers of insulation, or a purpose-made backflow insulation bag.
You don’t need heat tape or a heat lamp — the goal isn’t to keep it warm, it’s to keep it dry and empty for the winter. A dry backflow can’t freeze and crack, even if the temperature dips.
If you need assistance with this, we can help.