13 pYoure probably shopping for an air compressor because youve heard about the power of air tools over electric tools. If its not more torque and higher RPMs youre looking for then maybe its the easy interchange between tools almost as simple as plugging the tool into an outlet. Either way youre convinced that you need an air compressor but youre not quite sure where to start. This article will give you some of the basics about air compressors and then guide you through to selection by asking you five questions.br br 13Here are some of the key attributes youll be paying attention to when you start shopping for your air compressorbr br 13Horsepowerbr 13Air compressors, as their name implies, compress air. This takes an engine and engines have horsepower. The horsepower of the engine youre considering has direct impact on all the other aspects of your compressors performance. Horsepower is often inflated, and you should be paying closer attention to the engines rated amperage for an idea of how powerful it is.br br 13PSIbr 13PSI stands for pounds for square inch. Of course as you remember from high school physics class PSI is a measurement of pressure. To be exact, how many pounds of pressure is applied per square inch. The PSI rating is one of the crucial ratings in the air compressor to understand as air tools have a minimum amount of PSI required to run. Typically thats 90 PSI, but it depends from tool to tool.br br 13CFMbr 13CFM stands for Cubic Feet Per Minute and its a unit for measuring the rate of flow in or out of a space. In this case, the rate of flow of air out of your air compressor. Air tools typically require 46 CFM for proper operation.br br 13Tank Sizebr 13The tank size, measured in US gallons, tell you how much air is compressed and give you something of an idea of how long you can operate your air tool for at a time. The other factors that affect how long you can run your tool for are the PSI and HP of the engine itself as these factors determine how quickly your compressed air supply is replenished.br br 13Now that youve got the very basics of Air Compressors, here are four questions that will help you make your decisionbr br 131 Whos Using the Air Compressor, and What Forbr 13Is it you in your shop on weekends building birdhouses Or is it for your construction companys framing up new houses The level of use should be your first consideration when making a purchase and will help you determine how much of an investment really makes sense for your compressor. The aspects of the compressor you should be paying the most attention to here are PSI and horsepower. The higher these are the more power and continuous usage youll get out of your compressor.br br 132 What Air Tools Do You Plan To Usebr 13Will you be using an impact wrench in an assembly line automotive project Or are you using a brad nailer to finish up your wood shop projects Again, the amount of usage youre applying to your tool is a key factor in determining the HP, PSI and CFM of your air compressor. Typically, for the wood shop owner, youre looking at using finish nailers, brad nailers and narrowcrown staplers for your projects.br br 133 Will You Be Using More than One Tool At A Timebr 13If youre running two tools at once from a single compressor then you will need to invest in a compressor with more HP, PSI and CFM. A larger tank size would be beneficial as well.br br 134 Will You Be Mobile or Stationarybr 13If youre stationary then youll be fine with an electric powered air compressor. If not then youll need a gas powered compressor that you can bring with you to your electricityfree work site.br br 13Armed with the basics of compressor lingo PSI, CFM, Tank Size and Horsepower you should be a formidable consumer when you go shopping for your next compressor. Be highly skeptical when talking with compressor salesmen as they often know very little about the units they sell and seek to razzle dazzle you with big talk that wont help you get the right compressor for your needs.br br 13As always when choosing a new tool, know preci[...]

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