diff --git a/source/_integrations/stiebel_eltron.markdown b/source/_integrations/stiebel_eltron.markdown
index 95b6078c2e6..0454a8fce0a 100644
--- a/source/_integrations/stiebel_eltron.markdown
+++ b/source/_integrations/stiebel_eltron.markdown
@@ -30,6 +30,7 @@ It requires the following components:
 By now, the following units are tested:
 
 - LWZ 504e
+- LWZ 404eco
 - LWZ 304
 - LWZ 304 Trend