
If you’re a hobby garage mechanic or DIY remodeler, then you know that an air compressor can be a lifesaver.
But did you know that you can also use it to blow out your AC drain line?
That’s right – with the help of an air compressor, clearing out your drain line is quick and easy. Here’s what you need to do.
Table of Contents:
- What You’ll Need
- Preparing the Air Compressor
- Attaching the Hose to the Drain Line
- Blowing Out the Drain Line
- Finishing Up
- FAQs in Relation to How to Blow Out AC Drain Line With Air Compressor
- Conclusion
What You’ll Need
Assuming you would like a blog titled “How to blow out your AC drain line with an air compressor” :
You’ll need an air compressor and a hose in order to blow out your AC drain line. First, make sure that your AC unit is turned off.
Next, locate the small pipe that is attached to the side of your unit – this is the drain line.
Once you have found it, attach one end of the hose to the nozzle on the air compressor and fit the other end snugly over the opening of the drain line.
Turn on the air compressor and let it run for a few seconds in order to clear out any debris or build-up that may be present in the pipe.
Doing this regularly will help to keep your AC unit running smoothly and prevent any costly repairs down the road!
Preparing the Air Compressor

If you’re like most homeowners, you don’t think about your air compressor until you need it. But if you take the time to prepare your air compressor for winter, you’ll be glad you did when spring comes around.
Here are a few things to do to get your air compressor ready for winter:
1. Drain the Tank – If There’s Water in the Tank, It Will Freeze and Expand, Causing Damage to the Tank.
To prevent this from happening, drain all of the water out of the tank before storing it for the winter.
2. Lubricate Moving Parts – Before Putting Your Air Compressor Away for Storage, Make Sure to Lubricate All of Its Moving Parts with Machine Oil or WD-40®️.
This will help keep them working properly and prevent rusting during storage.
- Cover the air compressor Once you’ve drained the tank and lubricated all of its moving parts, cover your air compressor with a tarp or sheet to protect it from dust and debris.
- Store in a cool, dry place Finally, store your air compressor in a cool, dry place such as a garage or shed.
Avoid storing it outdoors where it could be exposed to extreme temperatures or moisture. By taking these simple steps to prepare your air compressor for winter storage, you’ll help ensure that it will be ready to use when spring arrives.
Attaching the Hose to the Drain Line
Assuming you’re talking about an air compressor:
If you own a garage or work on your car often, chances are you have an air compressor. Air compressors are versatile tools that can be used for a variety of tasks, from inflating tires to powering nail guns.
One lesser-known use for air compressors is blowing out AC drain lines. This can be helpful if your AC unit isn’t draining properly and water is backing up into the home.
To blow out an AC drain line with an air compressor, you’ll need to attach the hose from the air compressor to the drain line. Make sure that the connection is snug and secure before proceeding to the next step.
Once everything is hooked up, turn on the air compressor and let it run until all of the water has been cleared from the line. You may need to repeat this process several times if there’s a lot of build-up in the line.
Blowing out your AC drain line with an air compressor is a quick and easy way to clear any blockages that might be causing problems with your unit. Plus, it doesn’t require any special skills or knowledge – anyone can do it!
So if you’re having trouble with your AC unit, give this method a try. You might be surprised at how well it works.
Blowing Out the Drain Line

Assuming you have an air compressor, blowing out your AC’s drain line is a pretty simple process. All you need to do is attach the hose from the air compressor to the fitting on the drain line and turn on the machine.
Hold down the trigger until all of water has been forced out of system – easy as that! Not only will this clear any potential clogs in your drain line, but it will also help prolong the life of your AC unit overall.
So if you’re looking for a quick and easy way to keep your AC running smoothly, be sure to give this method a try!
Finishing Up
Assuming you have completed the previous steps successfully, all that is left to do is disconnect the hose from the drain line and reattach any covers or plugs. Be sure to turn off the air compressor before doing so.
Once everything is back in place, give your sink a test run to ensure proper drainage.
FAQs in Relation to How to Blow Out AC Drain Line With Air Compressor
Can you use air compressor to clear AC drain line?
Yes, you can use an air compressor to clear your AC drain line. All you need is a small attachment that fits onto the end of the air compressor hose.
Once you have this attachment, simply put it into the drain line and turn on the air compressor. The compressed air will blow out any debris that may be clogging up the line.
How do you blow out a drain on an air compressor?
There are a few ways to blow out an air compressor drain line:
- Using compressed air, attach the blowgun to the quick connect coupling on the tank.
Open the ball valve slightly and hold trigger of gun until water is blown from line. If you have an inline filter, make sure to open it as well so that any debris will be removed.
Close ball valve when finished.
- Another way is to use a shop vac attachment by connecting it directly onto the quick connect coupling (or removing discharge tube if possible).
Turn vacuum on full power and let run until all water is gone from system You may need to do this a few times if line is very full.
How do I unclog my AC drain line?

The best way to unclog your AC drain line is by using an air compressor. First, locate the blow-off valve on your AC unit and open it up.
Next, take the air compressor hose and insert it into the valve. Finally, turn on the air compressor and let it run for a few seconds in order to clear out any clogs in the line.
How do you blow out HVAC lines?
You can use an air compressor to blow out HVAC lines by connecting the compressed air line to the fitting on the end of the drain line. Turn on the compressor and open the valve on the end of the drain line until you hear a hissing sound.
This indicates that air is flowing through the line and blowing out any debris or clogs.
Conclusion
It’s a relatively simple process, but there are a few things you’ll need to know before getting started.
First, make sure you have the right air compressor for the job – one that’s powerful enough to do the job but not so powerful that it damages your AC unit.
Second, attach the hose to the drain line and open up the valve slowly, letting any built-up water escape gradually.
Finally, turn on the air compressor and let ‘er rip! After a few seconds of blasting compressed air through the system, your drain line should be clear as day.
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 variety of services pertaining to air compressors, and our team of experts is always available to answer any questions you may have. Contact us today to learn more about what we can do for you!