Folks frequently get bewildered regarding selecting the most appropriate air compressor to operate their equipment. Quite simply, there are several factors that you need to look at when choosing an air compressor for your garage or store. It might also be a good idea to check out some air compressor reviews. Let’s have a look at the factors to keep in mind: 1. Horse power rating Many people are of the view that the greater the hp, the better is the air compressor. However, all horse power ratings aren't equal and may even be misrepresented. For instance, when you go to a hardware store to buy a 6 horse power air compressor, you find one that's priced really cheap. So, exactly why is 6 horse power industrial unit so expensive? Well, 6 hp is 6 horse power, right? Not necessarily, because when selecting an air compressor, you need to see the power that the air compressor draws. If if requires 15 amps from a 110 volts circuit, then you are really getting around 2 horse power. So, the 6 hp rating on the compressor is inflated. In order to generate 6 horse power, you would require no less than 24 amps from a 220 volts circuit. For that reason, if you are interested in a 6 hp electric compressor, you should get a commercial compressor, rather than getting a cheaper unit from a hardware store. 2. How much PSI will you need? For all newbies, PSI means “pounds per square inch” and a lot of the compressors in the United States are rated this way. In the European Union, they're measured in bar. When choosing an air compressor, you might want to settle for 90 PSI for correct operation. Even so, still you would have to have a air compressor that has greater shut-off pressure. Air compressors in hardware stores are “single-stage” and have a shut off around 126-135 PSI. Almost all light duty air compressors shut off at about 100 PSI and so are fine for light duty garage use. However, if you are planning to use power tools, then more is certainly better. A lot of the commercial air compressors are “two-stage”, that is they build up the shut-off pressure in two separate stages. The first stage builds up at around 90 PSI and the second state builds it to 175 PSI. 3. CFM CFM (Cubic Feet per Minute), is a measurement of volume, which is the quantity of air that's being moved. Air tools need certain volume of air to operate effectively. Although every manufacturer tries to impress that his item gives higher CRM ratings at various pressures, your true concern when selecting an air compressor ought to be on how much you'd get at 90 PSI because this is what the majority of the air tools require for effective operation. 4. Tank size The tank size of air compressor is expressed in US gallons. Lots of people get confused about the right tank size when choosing an air compressor. Firstly, you shouldn't confuse a large tank with more run time for your air tools. If tools are used intermittently, then a large tank is useful. However, should you need to use your tools constantly, you'd do better with a small tank and large enough motor and pump. This would make sure that you won’t run out of air. Now you can easily pick an air compressor equipped with this helpful information. Lastly, you need to decide on what you're likely to use your air compressor for and choose a suitable model.
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