Buying a used air compressor can be a smart decision when you have a tight budget. and as long as you follow some general guidelines, you should end up with an affordable compressor that offers the power you and your tools require.
Know your Exact Application
Will you be using this machine at home for some simple DIY projects, or on the job such as at a construction site or mechanic’s shop? Know exactly how and where you will use it will help you determine which model fits your needs best.
What are your CFM Requirements?
If you’re new to air compressors and using pneumatic tools in general, then you may not be aware of your cfm (cubic feet per minute) requirements. every air tool has a certain cfm rating and this tells you what is required to power them. for instance, tools like pneumatic nail guns and staplers have a lower cfm rating and require less flow or output than do sand blasters or a pneumatic grinder, which require not only more power but a continuous source of it.
A good rule of thumb is to find the tool you use that has the highest cfm rating and use that in determining which compressor you choose. If you find a machine you like that will power your hardest tool, then it will also power your other tools that have lower cfm ratings.
Do you Require Portability?
Air compressors, both new and used, come in a variety of shapes and sizes. some are portable and some stationary, and you will have to know exactly what your needs are in this scenario. If you are a DIYer and intend to use it around the house for doing some light finishing work, then it makes sense for you to get a smaller machine that is very portable. There are small compressors that can be carried by hand from a built-in handle. There are also ones that are portable, but they are quite a bit bigger and on a set of wheels.
And then there are those that are very large and completely stationary. these are the air compressors you tend to see in auto body shops and factories. Know before you purchase any compressor exactly if you will need to move the compressor around.
Find Out the History
When buying a used air compressor, the most important thing you can do is to find out the exact history of the machine. Ask to see any maintenance records and inquire if there have been any replacement parts. If the unit is not local, then it is your right and duty to ask to see photos if the seller has not yet provided any. If at all possible, ask to see video of the compressor being used to see it in action. Know if this machine is even a viable option before you drive however many miles to check it out in person.
Buying a used air compressor is a great option if you’re on a tight budget. just be sure to follow these guidelines so you choose one that fits your needs and will last a long time.