10 30 20 40 80 40 100. 60 120 50 3. Winter winds eat up cold cash Before the mercury dips, follow these tips to minimize your heating costs: Seal air leaks around windows and doors. Caulk or seal entry points where ductwork, wiring, and plumbing are installed. Add insulation to the foundation and attic. For more energy-saving tips, visit otpco.com/SaveNow. OTER TAIL POWER COMPANY 2030/ 06 | 50 10 30 20 40 80 40 100. 60 120 50 3. Winter winds eat up cold cash Before the mercury dips, follow these tips to minimize your heating costs: Seal air leaks around windows and doors. Caulk or seal entry points where ductwork, wiring, and plumbing are installed. Add insulation to the foundation and attic. For more energy-saving tips, visit otpco.com/SaveNow. OTER TAIL POWER COMPANY 2030/ 06 | 50