EN 308 is the European standard that specifies test procedures for air-to-air heat transfer<\/strong> in heat recovery equipment. Rather than setting a pass\/fail threshold, it defines how to measure temperature effectiveness and, for enthalpy devices, moisture effectiveness under controlled inlet conditions.<\/p>\n The test fixes inlet dry-bulb temperatures and, where relevant, humidity on both streams, then calculates effectiveness from the measured outlet states. Balanced and unbalanced airflow cases are both reported so designers can read real-world performance. This is the method referenced by EN 16798<\/a> energy calculations.<\/p>\n Because EN 308 is a test method, the actual performance thresholds come from the building regulations and standards (EPBD, EN 16798) that cite it. Always check the local code for the minimum effectiveness it requires.<\/p>\n A consistent test method lets you compare a European plate exchanger and a rotary wheel on the same footing, and it underpins Eurovent certification<\/a> of published performance.<\/p>\nWhat Gets Measured<\/h2>\n
EN 308 Is a Method, Not a Limit<\/h2>\n
Why It Matters<\/h2>\n
Need Tested Performance?<\/h2>\n