One of the most frequent reasons your dishwasher isn’t draining correctly is on account of a blockage in the drain tube. This drain line, or drain hose, moves water out of the dishwasher tub after a cycle ends. If the drain line is blocked, water isn’t able to flow out of the tub. Call the Service Experts Heating & Air Conditioning pros at 303-647-5749 for plumbing services in Longmont.