How can homeowners help to improve the efficiency of their heat pump systems?

Homeowners can significantly enhance the efficiency of their heat pump systems by sealing ducts, maintaining the system, and improving home insulation.

Sealing ducts is crucial because any leaks in the ductwork can lead to significant energy loss. When heated or cooled air escapes through these leaks, the system has to work harder to maintain the desired temperature, leading to increased energy consumption and reduced efficiency.

Regular maintenance of the heat pump is essential for ensuring that it operates at peak performance. This includes tasks such as cleaning or replacing filters, checking refrigerant levels, and ensuring that the outdoor and indoor components are free from debris. A well-maintained system not only performs better but also has a longer lifespan.

Improving home insulation complements these efforts by preventing conditioned air from escaping and outside air from infiltrating the home. Well-insulated walls, attics, and floors help the heat pump maintain comfortable indoor temperatures without excessive energy use.

The other options would lead to decreased efficiency or performance issues. Allowing air to leak from ducts reduces the system's ability to heat or cool effectively, neglecting maintenance can cause wear and inefficiency, and setting the thermostat to extreme temperatures can strain the system and lead to higher energy bills.