Level 9 Heating, Cooling, and Plumbing encourages area homeowners to schedule furnace maintenance in Des Peres, MO, at least once a year. Most manufacturer warranties require a seasonal furnace tune-up. A tune-up helps to ensure greater energy efficiency and, thus, reduced heating costs. Regular cleaning can make a big difference when it comes to dust and indoor air quality overall. It’s also an effective way to spot trouble in advance and avoid those sudden failures in the dead of winter.