diff --git a/control/json/zone.cpp b/control/json/zone.cpp
index 6dd4618..e11e6fc 100644
--- a/control/json/zone.cpp
+++ b/control/json/zone.cpp
@@ -51,8 +51,8 @@
 Zone::Zone(sdbusplus::bus::bus& bus, const json& jsonObj) :
     ConfigBase(jsonObj),
     ThermalObject(bus, (fs::path{CONTROL_OBJPATH} /= getName()).c_str(), true),
-    _incDelay(0), _floor(0), _target(0), _incDelta(0), _requestTargetBase(0),
-    _isActive(true)
+    _incDelay(0), _floor(0), _target(0), _incDelta(0), _decDelta(0),
+    _requestTargetBase(0), _isActive(true)
 {
     // Increase delay is optional, defaults to 0
     if (jsonObj.contains("increase_delay"))
@@ -136,6 +136,15 @@
     }
 }
 
+void Zone::requestDecrease(uint64_t targetDelta)
+{
+    // Only decrease the lowest target delta requested
+    if (_decDelta == 0 || targetDelta < _decDelta)
+    {
+        _decDelta = targetDelta;
+    }
+}
+
 void Zone::setPersisted(const std::string& intf, const std::string& prop)
 {
     if (std::find_if(_propsPersisted[intf].begin(), _propsPersisted[intf].end(),