Does an electric water heater need to be vented? No, never 100% Get Free Quotes Today! Question: Does an electric water heater need to be vented? Top Answer (100% of 4 votes): No, never. Answer: No, never Explanation: No emmions Georgia Master Plumbing Get Free Quotes Today! Find Local Pros Free Water Heater Installation Cost Estimates Related Questions Who Installs Water Heaters? Do water heater timers save electricity?Top answer: In some cases Do electric water heaters require venting?Top answer: No Tankless water heaters have higher operating costs than conventional water heaters.Top answer: False The most common residential water heater tank capacity is 50 gallons.Top answer: True