EVI Air Source Heat Pump 1.-25 DC low temp, EVI design 2.Cop to 4.8, 410A 3. ... the most advanced low Temp Enhanced Vapour Injection compressor technology and have successfully produced the EVI low temperature heat pump.EVI split design ... run.minisite.productShow(); oProductShow.init( { 'aImgSrc': aBigImageSrc } ); } )(); heat pump(evi air to water,low temp, -25 DC, split, CE, EN14511-2:2011, EN14511 ...