The best way to determine what size air compressor you need is to add up the consumption of each piece of equipment using air. Ideally collate the information in the same measurement format. We (and the rest of the compressed air industry) predominantly use CFM (cubic feet per minute).
Once you have this information a good ‘rule of thumb’ is to divide the CFM by 4 to calculate the required HP. Then to work out the required kw, take the HP x4 then divide by 3. There are limitations to this calculation though so when ordering an air compressor always give the cfm you need as the higher the bar pressure the lower the cfm the compressor will produce. In many cases this is difficult to ascertain so call one of our experienced engineers for advice on 0114 243 2347.