Yes, in most cases, septic aerators are designed to run continuously to maintain oxygen levels and promote efficient waste breakdown. A constant oxygen supply ensures aerobic bacteria remain active, preventing sludge buildup and minimising odours.

If the aerator stops working, oxygen levels drop, causing aerobic bacteria to die off. This can result in poor waste breakdown, increased sludge accumulation, foul odours, and potential drain field failure. A malfunctioning aerator should be repaired or replaced as soon as possible to prevent costly damage.

While some systems allow for timed aeration, continuous operation is generally recommended for most septic systems. Using a timer may reduce energy consumption, but it can also lead to bacterial imbalances, odour problems, and inefficiencies in waste breakdown. Always check the manufacturer’s recommendations before adjusting aerator settings.