Customers who sign up for an annual service check usually have heat pump maintenance performed in the spring and the fall. If you didn’t have your heat pump inspected earlier in the season, it isn’t too late! The recommended time frame to have your pump tuned up is at least once per year, but scheduling maintenance a few months late is better than waiting until next year. After all, a well-maintained heat pump is 10 to 25 percent more efficient than a neglected one.