Get your air supply right! Don't over-spend or under-specify.
Step 1
Analyze the requirements of the air tools that you will be using. In particular, consider pressure and volume requirements. If the portable air compressor is for airbrushing for example, a 5 liter tank capacity and around 30psi of sustained air pressure would be adequate.
Step 2
Choose a larger volume and pressure if you will require larger volumes of air for your application; otherwise, you will always be waiting for the tank to fill up and this will decrease your work efficiency.
Step 3
Consider space and portability. For example, will you be able to roll the compressor or lift it off the ground if you need to? Air compressors can be small, portable items or larger, more powerful fixtures. Portability is convenient, but if it will stay in one corner of the garage, you may be able to use a longer hose, instead, and have a higher capacity compressor. Does this compressor need to supply a nail gun on the roof, or just fill tires in the garage?
Step 4
Consider your power source. Most air compressors will run on 110V (US), but some larger ones run on 240V. Find out before you buy.
Step 5
Consider your budget. Like many things, you can spend a little or a lot.
Tips
- Work out your requirements, then look around for a compressor that uses them.
- Aim for a slightly higher rating than you will need.
- Don't forget hose length. Where will the compressor live in relation to the work area? If the compressor is in the garage and the work happens in the driveway, plan accordingly.
- Pancake style air compressors have high pressure but low volume. Unless you need that level of portability, a small cannister style may have a better volume.
- Oil-free compressors may sound good in the store, but they may sound bad in your garage. Oil-free compressors can be very noisy, so be aware before you buy.
Warnings
- Air tools can be dangerous. Read and understand all manuals and be safe.
- Avoid placing portable air compressors where they could fall.
