Can a washing machine discharge hose be too long?
Make sure that the drain hose is not stretched, pinched, crushed, or kinked. Do not install the drain hose with the end lower than 29.5 inches (75 cm) or higher than 96 inches (244 cm) above the bottom of the washer or more than 60 inches (152 cm) away from the washer.
How long should a washing machine drain hose be?
You can fit an extension hose to an existing washing machine, but it should not be longer than 1.2 m (4 ft). Anything longer can cause insufficient drainage and backflow into the washing machine.
Does a washing machine drain hose need to be vented?
All plumbing fixtures—including washing machines—must be vented. Improperly vented drains can be sluggish and noisy, and can emit hazardous fumes. Properly vented drains allow the P-trap to do its job: prevent sewer gases from escaping into your home.