
Why It’s Important to Drain Your Air Compressor Regularly
As a hobby garage mechanic or DIY remodeler, you know that having an air compressor is essential to completing many tasks.
But did you know that it’s just as important to drain your air compressor regularly?
Draining your air compressor helps prevent rust and corrosion from building up, which can damage the unit and shorten its lifespan. Additionally, regular maintenance will ensure that your air compressor continues to work properly.
So how often should you drain your unit?
Most experts recommend draining your air compressor after each use. This may seem like a lot of work, but it only takes a few minutes and will help keep your equipment in top condition.
Plus, if you have more than one compressed air tool in operation, draining each one after use will help prevent cross-contamination of fluids. So the next time you finish using your air compressor, take a few minutes to drain it.
Your equipment will thank you!
How Often You Should Drain Your Air Compressor
Assuming you use your air compressor regularly, it’s important to drain it once a week.
Here’s how:
First, shut off the power to the unit and release any pressure that may be in the tank. Next, open the drain valve at the bottom of the tank and allow all of the water to empty out.
Once finished, close the valve and restart your air compressor.
The Best Way to Drain Your Air Compressor

Assuming you have an air compressor with a tank, the best way to drain it is by first shutting off the power and disconnecting the unit from any external power source. Next, open the drain valve and allow all of the air to escape.
Once all of that’s done, close up the valve again and remove any water remaining inside using a wet/dry vacuum cleaner.
Troubleshooting Tips for Draining Your Air Compressor
If your air compressor is not draining properly, there are a few things you can do to troubleshoot the issue. Check that the drain valve is open all the way.
If it’s only partially open, this can restrict airflow and cause problems with drainage. Another thing to check for is any blockages in the drain line or around the valve itself.
If you’re still having trouble after these steps, consult your air compressor manual or contact a professional for help.
FAQs in Relation to How to Drain an Air Compressor
Do I need to drain my air compressor?
Yes, you need to drain your air compressor.
Here’s why:
An air compressor works by compressing air and storing it in a tank. When the pressure in the tank reaches a certain level, the compressor shuts off.
As the compressed air cools, it contracts and creates negative pressure within the tank. This can cause water to condense inside the tank which can rust or damage the internals of your compressor.
Draining your air compressor regularly will help prevent this from happening.
Where is the drain valve on an air compressor?
The drain valve on an air compressor is typically located near the bottom of the unit, and may be either a ball valve or a petcock. To drain the air compressor, simply open the valve and allow all of the compressed air to escape.
How often should you drain water from air compressor?

You should drain water from your air compressor every day to prevent rust and corrosion
Should I leave the drain valve open on my air compressor?
It is generally recommended to leave the drain valve open on your air compressor, as this helps to prevent moisture and condensation from building up inside the unit.
Additionally, draining any accumulated water will help extend the life of your air compressor.
Conclusion
It’s important to drain your air compressor regularly to prevent rust and corrosion. Depending on how often you use it, you should drain it at least once a month.
The best way to do this is by disconnecting the hose from the discharge valve and letting all the air out until there’s only water left in the tank.
If you have any trouble draining your air compressor, troubleshooting tips can be found online or in the user manual.
If you’re looking for information on buying, owning, and using an air compressor, Air Compressor Total is the place to go. We offer a wide range of services pertaining to air compressors, including advice on which model to buy based on your needs, how to properly maintain your air compressor, and troubleshooting tips in case something goes wrong. Don’t hesitate to contact us today – we’re always happy to help!
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