Repairing your heating system can improve energy efficiency to some extent. Fixing issues like malfunctioning thermostats, clogged filters, or faulty components can optimize performance. However, if the system is outdated or has major inefficiencies, investing in a new, energy-efficient unit may yield more substantial savings in the long run. Regular maintenance and timely repairs are essential to ensure your heating system operates efficiently, reducing energy consumption and associated costs. Consult with a professional to assess your system's condition and recommend appropriate measures.