Yes, a dryer vent can run horizontally, but there are some important considerations and guidelines to ensure proper functioning and safety:
Proper slope: The vent should have a slight downward slope (usually 1/4 inch per foot) to allow lint and moisture to flow out of the vent. Avoid creating sagging sections where lint can accumulate.
Length limitations: Keep the horizontal run of the vent as short as possible. Long horizontal runs can lead to reduced airflow and increased lint buildup, which can pose a fire hazard.
Vent diameter: Use a rigid metal vent with a smooth interior, preferably 4 inches in diameter, to reduce airflow resistance and minimize lint accumulation.
Avoid sharp bends: Minimize the number of turns and bends in the horizontal section of the vent. Use gentle curves rather than sharp angles to promote better airflow.
Regular maintenance: Regularly clean and inspect the vent to prevent lint buildup, blockages, and potential fire hazards.
Vent termination: The horizontal vent should terminate outside the building, ideally with a weatherproof vent cap to prevent rain and debris from entering the vent.
It's essential to follow these guidelines to ensure your dryer vent operates efficiently and safely. Improperly installed or maintained dryer vents can lead to reduced dryer performance, increased energy consumption, and even fire risks. If you are uncertain about installing or modifying a dryer vent, it's best to consult a professional to ensure everything is done correctly and safely.