REMOVE AND REPLACE DUCT WORK IN CITRUS HEIGHTS FOR DUMMIES

Arrived on web page to complete upkeep in the 19-calendar year-outdated system. On arrival, system powers on when calling for heat at thermostat and completes its sequence of operations and starts to warm the home. All motors are pulling good amperage and all capacitors are in spec, zoning board has A significant burn on it, which can be because of