A septic tank blower is an air pump installed on a septic tank.When the blower operates properly, it activates the microorganisms inside the septic tank and helps ensure household wastewater is treated appropriately.Its typical service life is 5 to 7 years, and if a problem occurs, it may be possible to replace it yourself. This article explains how a septic tank blower works, how to replace it, and the key points to consider when choosing one.
What is a septic tank blower?
A blower is a(n) air pump that sends air into a septic tank. Microorganisms that break down wastewater live inside the septic tank, and supplying air (oxygen) through the blower activates their function. Airflow also circulates the water, allowing the wastewater to be purified evenly throughout the tank.
Blower service life and signs of failure
A blower typically lasts 5 to 7 years. If you notice the following signs, consider replacing it.
- The blower is not operating at all
- Unusual or loud noises are occurring
- The output air volume is insufficient
- It is overheating abnormally
Can you replace a septic tank blower yourself?
You can replace a septic tank blower yourself.If the type is compatible, replacement is possible without hiring a contractor, but some septic tanks do not allow this, so you should confirm in advance.
Estimated replacement cost
The cost of the blower unit itself varies depending on the air volume.
- Small (air volume 30 to 40): about 10,000 to 12,000 yen
- Large (air volume 150 or more): about 30,000 to 60,000 yen
- For general household use, about 10,000 to 20,000 yen is a common guideline
How to replace a septic tank blower
- Turn off the power: Always start the work only after turning off the blower power
- Disconnect the piping: Remove the rubber hose by hand (no tools required)
- Remove the old blower
- Install the new blower: Place it at least 10 cm above the ground and about 20 cm away from the wall
- Reconnect the piping: If there are two ports, be careful not to confuse the "aeration" and "backwash" connections
- Turn the power back on and check operation
Key points when choosing a blower
Match the air volume
If the air volume is too high, electricity costs will increase.It is important to choose a blower with an air volume appropriate for the size of your septic tank.
Check the number of ports
Choose a blower with the same number of ports as the one you currently use (one port or two ports).If there are two ports, you also need a product with the same left-right arrangement of the aeration port and backwash port.
Managing a septic tank blower is also an important skill in the practical management of rental properties. As part of the basics of facility management, it is also useful to understand how to check for electrical leakage and deal with it. For overall maintenance of managed properties, how to choose a rental property management company is also a helpful reference.
Related reading
Frequently Asked Questions (FAQ)
- Q1. What is a septic tank blower?
- It is an air pump that sends air into a septic tank. It is necessary for activating the microorganisms inside the tank and circulating the wastewater.
- Q2. How long does a blower last?
- In general, 5 to 7 years is a common guideline for service life. If you notice unusual noise or operating problems, consider replacing it early.
- Q3. How much does it cost to replace a blower?
- For general household use, about 10,000 to 20,000 yen is a common guideline. If you hire a contractor, labor costs will be added separately.
- Q4. Do I need to choose the same manufacturer as the old blower?
- No. You can switch to a different manufacturer as long as the air volume and the number of ports (one or two) match.
- Q5. What happens if the blower is left broken?
- The microorganisms inside the septic tank may die, and the wastewater will no longer be treated properly. It can also cause bad odors and affect required inspections, so address it promptly.
