diff --git a/src/roomcontrol.h b/src/roomcontrol.h
index 627c0d3bd..d2fa4b827 100644
--- a/src/roomcontrol.h
+++ b/src/roomcontrol.h
@@ -37,7 +37,7 @@ class Roomctrl {
 
   private:
     static constexpr uint32_t SEND_INTERVAL = 15000;    // 15 sec
-    static constexpr uint32_t TIMEOUT       = 10800000; // 3 hour
+    static constexpr uint32_t TIMEOUT       = 86400000; // 24 hour
     static constexpr uint8_t  HCS           = 4;        // max 4 heating circuits
     enum SendType : uint8_t { TEMP, HUMI };