Your heat pump works hard year-round to keep your home comfortable—cooling in the summer and heating in the winter. For homeowners comparing heating options, deciding between a furnace or heat pump can also be part of planning for long-term comfort. But like any system that runs continuously, it needs regular care to stay efficient and reliable. If you’re wondering whether your unit could use a little attention, here are the top heat pump warning signs that may mean it needs a tune-up.