Routine service is also important. AC maintenance Greenville visits can include cleaning, checking drain lines, verifying airflow, Tuck & Howell Plumbing Heating Air inspecting electrical connections and making sure the system starts, runs and shuts down correctly.(Image: https://i.ytimg.com/vi/CxQYp5yVE4w/hq720.jpg) Many homeowners also set up HVAC maintenance plans Greenville so seasonal service is not forgotten and small problems are caught sooner.