One of the most common reasons your dishwasher won’t drain well is because of a obstruction in the drain tube. This drain line, or drain hose, moves water out of the dishwasher tub at the end of a cycle. If the drain line is blocked, water won’t flow out of the tub. Contact the Service Experts Heating & Air Conditioning pros at 318-588-8163 for plumbing services in Shreveport.