As we switch from cooling to heating, it’s easy to overlook what our HVAC systems are up to. “If a minor part took some damage or wear over the summer,” Rodriquez said. Not only does it prepare the system for heating needs, but it can also catch lingering issues from summer that might otherwise go unnoticed until they become major problems. Rodriquez strongly encourages homeowners not to overlook one of the simplest yet most crucial parts of HVAC maintenance: the air filter. “Filters are the cheapest and easiest way to keep your HVAC system running properly all year round,” Rodriquez said.