How Long Does the Average Aerator Last in a Home Sewage Treatment System and What Causes Failure?

When you're living in a home that relies on a septic system rather than a city sewer connection, every component matters. And in aerobic treatment systems, the aerator plays a crucial role. It injects oxygen into the tank, encouraging the growth of helpful bacteria that break down waste efficiently. But like any mechanical part, aerators don't last forever. At Apalachee Backhoe & Septic Tank, we often get asked: how long should a septic aerator last, and what causes it to fail?

Average Lifespan of a Septic Aerator

With routine maintenance and the right conditions, most aerators last between 3 to 5 years. Some high-quality models, when looked after well, can even stretch beyond 7 years.

What Influences Aerator Lifespan?

• Quality of the Unit – Trusted brands tend to last longer.

• Frequency of Use – Surprisingly, continuously running aerators face fewer issues than ones that start and stop often.

• Regular Maintenance – Simple checks and cleanups go a long way.

What Causes Aerators to Fail?

Even a sturdy unit can run into trouble if not properly cared for. Here are the most common issues we see across homes in North Florida:

Mechanical Wear

The motor, fan, and other moving parts experience wear over time—especially under heavy loads or if debris builds up.

Clogs & Debris

Hair, hygiene products, even “flushable” wipes—these items can stress the system. Debris on the shaft or aspirator tip restricts airflow, straining the motor.

Pro Tip: Install filters on indoor drains and clean them regularly.

Electrical Glitches

Moisture, surges, or worn wiring can trip circuits or cause motor burnout. Heat and Florida humidity don’t help either.

Environmental Stress

Tallahassee weather can be unpredictable. Flooding, extreme heat, or even freeze conditions can shorten your aerator’s life.

How to Spot a Failing Aerator

Look out for:

• Loud humming or grinding noises

• Foul odors from the tank

• Less bubbling in the treatment zone

• Frequent breaker trips

Get Help from the Experts

At Apalachee Backhoe & Septic Tank, we bring over 30 years of septic experience to homes across Tallahassee, Crawfordville, Monticello, and Quincy. If your aerator is acting up—or if you just want it inspected before problems begin—call us today for an expert evaluation.