diff --git a/src/MainTask.h b/src/MainTask.h
index f97329b..f087921 100644
--- a/src/MainTask.h
+++ b/src/MainTask.h
@@ -225,7 +225,7 @@ protected:
       uint8_t availableSensors = 0;
 
       if (Sensors::existsConnectedSensorsByPurpose(Sensors::Purpose::INDOOR_TEMP)) {
-        auto value = Sensors::getMeanValueByPurpose(Sensors::Purpose::INDOOR_TEMP, Sensors::ValueType::PRIMARY);
+        auto value = Sensors::getMeanValueByPurpose(Sensors::Purpose::INDOOR_TEMP, Sensors::ValueType::PRIMARY, settings.heating.indoorTempAvgType);
         if (value < lowTemp) {
           lowTemp = value;
         }
diff --git a/src/Sensors.h b/src/Sensors.h
index bd9b524..53b9285 100644
--- a/src/Sensors.h
+++ b/src/Sensors.h
@@ -77,6 +77,12 @@ public:
     RSSI        = 3
   };
 
+  enum class AverageType : uint8_t {
+    MEAN    = 0,
+    MINIMUM = 1,
+    MAXIMUM = 2
+  };
+
   typedef struct {
     bool enabled = false;
     char name[33];
@@ -330,7 +336,7 @@ public:
     return updated;
   }
 
-  static float getMeanValueByPurpose(Purpose purpose, const ValueType valueType, bool onlyConnected = true) {
+  static float getMeanValueByPurpose(Purpose purpose, const ValueType valueType, const AverageType avgType = AverageType::MEAN, bool onlyConnected = true) {
     if (settings == nullptr || results == nullptr) {
       return 0.0f;
     }
@@ -340,27 +346,65 @@ public:
       return 0.0f;
     }
     
-    float value = 0.0f;
-    uint8_t amount = 0;
+    if (avgType == AverageType::MEAN) {
+      float value = 0.0f;
+      uint8_t amount = 0;
 
-    for (uint8_t id = 0; id <= getMaxSensorId(); id++) {
-      auto& sSensor = settings[id];
-      auto& rSensor = results[id];
+      for (uint8_t id = 0; id <= getMaxSensorId(); id++) {
+        auto& sSensor = settings[id];
+        auto& rSensor = results[id];
 
-      if (sSensor.purpose == purpose && (!onlyConnected || rSensor.connected)) {
-        value += rSensor.values[valueId];
-        amount++;
+        if (sSensor.purpose == purpose && (!onlyConnected || rSensor.connected)) {
+          value += rSensor.values[valueId];
+          amount++;
+        }
       }
-    }
 
-    if (!amount) {
-      return 0.0f;
-      
-    } else if (amount == 1) {
-      return value;
+      if (!amount) {
+        return 0.0f;
+        
+      } else if (amount == 1) {
+        return value;
+
+      } else {
+        return value / amount;
+      }
+
+    } else if (avgType == AverageType::MINIMUM) {
+      float value = NAN;
+
+      for (uint8_t id = 0; id <= getMaxSensorId(); id++) {
+        auto& sSensor = settings[id];
+        auto& rSensor = results[id];
+
+        if (sSensor.purpose == purpose && (!onlyConnected || rSensor.connected)) {
+          if (value == NAN || rSensor.values[valueId] < value) {
+            value = rSensor.values[valueId];
+          }
+        }
+      }
+
+      return value != NAN ? value : 0.0f;
+
+    } else if (avgType == AverageType::MAXIMUM) {
+      float value = NAN;
+
+      for (uint8_t id = 0; id <= getMaxSensorId(); id++) {
+        auto& sSensor = settings[id];
+        auto& rSensor = results[id];
+
+        if (sSensor.purpose == purpose && (!onlyConnected || rSensor.connected)) {
+          if (value == NAN || rSensor.values[valueId] > value) {
+            value = rSensor.values[valueId];
+          }
+        }
+      }
+
+      return value != NAN ? value : 0.0f;
 
     } else {
-      return value / amount;
+      // bad mean type
+      return 0.0f;
     }
   }
 
diff --git a/src/SensorsTask.h b/src/SensorsTask.h
index 7c5fa6e..09b0333 100644
--- a/src/SensorsTask.h
+++ b/src/SensorsTask.h
@@ -423,8 +423,8 @@ protected:
   }
 
   void updateMasterValues() {
-    vars.master.heating.outdoorTemp = Sensors::getMeanValueByPurpose(Sensors::Purpose::OUTDOOR_TEMP, Sensors::ValueType::PRIMARY);
-    vars.master.heating.indoorTemp = Sensors::getMeanValueByPurpose(Sensors::Purpose::INDOOR_TEMP, Sensors::ValueType::PRIMARY);
+    vars.master.heating.outdoorTemp = Sensors::getMeanValueByPurpose(Sensors::Purpose::OUTDOOR_TEMP, Sensors::ValueType::PRIMARY, settings.heating.outdoorTempAvgType);
+    vars.master.heating.indoorTemp = Sensors::getMeanValueByPurpose(Sensors::Purpose::INDOOR_TEMP, Sensors::ValueType::PRIMARY, settings.heating.indoorTempAvgType);
 
     vars.master.heating.currentTemp = Sensors::getMeanValueByPurpose(Sensors::Purpose::HEATING_TEMP, Sensors::ValueType::PRIMARY);
     vars.master.heating.returnTemp = Sensors::getMeanValueByPurpose(Sensors::Purpose::HEATING_RETURN_TEMP, Sensors::ValueType::PRIMARY);
diff --git a/src/Settings.h b/src/Settings.h
index 62e6289..2f3e23a 100644
--- a/src/Settings.h
+++ b/src/Settings.h
@@ -107,6 +107,8 @@ struct Settings {
     uint8_t minTemp = DEFAULT_HEATING_MIN_TEMP;
     uint8_t maxTemp = DEFAULT_HEATING_MAX_TEMP;
     uint8_t maxModulation = 100;
+    Sensors::AverageType indoorTempAvgType = Sensors::AverageType::MEAN;
+    Sensors::AverageType outdoorTempAvgType = Sensors::AverageType::MEAN;
 
     struct {
       bool enabled = true;
diff --git a/src/strings.h b/src/strings.h
index c7a17af..d4b8c62 100644
--- a/src/strings.h
+++ b/src/strings.h
@@ -115,6 +115,7 @@ const char S_IGNORE_DIAG_STATE[]                    PROGMEM = "ignoreDiagState";
 const char S_IMMERGAS_FIX[]                         PROGMEM = "immergasFix";
 const char S_ALWAYS_SEND_INDOOR_TEMP[]              PROGMEM = "alwaysSendIndoorTemp";
 const char S_INDOOR_TEMP[]                          PROGMEM = "indoorTemp";
+const char S_INDOOR_TEMP_AVG_TYPE[]                 PROGMEM = "indoorTempAvgType";
 const char S_INDOOR_TEMP_CONTROL[]                  PROGMEM = "indoorTempControl";
 const char S_IN_GPIO[]                              PROGMEM = "inGpio";
 const char S_INPUT[]                                PROGMEM = "input";
@@ -155,6 +156,7 @@ const char S_ON_LOSS_CONNECTION[]                   PROGMEM = "onLossConnection"
 const char S_OPENTHERM[]                            PROGMEM = "opentherm";
 const char S_OPTIONS[]                              PROGMEM = "options";
 const char S_OUTDOOR_TEMP[]                         PROGMEM = "outdoorTemp";
+const char S_OUTDOOR_TEMP_AVG_TYPE[]                PROGMEM = "outdoorTempAvgType";
 const char S_OUT_GPIO[]                             PROGMEM = "outGpio";
 const char S_OUTPUT[]                               PROGMEM = "output";
 const char S_OVERHEAT[]                             PROGMEM = "overheat";
diff --git a/src/utils.h b/src/utils.h
index ea4f5c8..52c5d13 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -498,6 +498,8 @@ void settingsToJson(const Settings& src, JsonVariant dst, bool safe = false) {
   heating[FPSTR(S_MIN_TEMP)] = src.heating.minTemp;
   heating[FPSTR(S_MAX_TEMP)] = src.heating.maxTemp;
   heating[FPSTR(S_MAX_MODULATION)] = src.heating.maxModulation;
+  heating[FPSTR(S_INDOOR_TEMP_AVG_TYPE)] = static_cast<uint8_t>(src.heating.indoorTempAvgType);
+  heating[FPSTR(S_OUTDOOR_TEMP_AVG_TYPE)] = static_cast<uint8_t>(src.heating.outdoorTempAvgType);
 
   auto heatingOverheatProtection = heating[FPSTR(S_OVERHEAT_PROTECTION)].to<JsonObject>();
   heatingOverheatProtection[FPSTR(S_HIGH_TEMP)] = src.heating.overheatProtection.highTemp;
@@ -1393,6 +1395,42 @@ bool jsonToSettings(const JsonVariantConst src, Settings& dst, bool safe = false
     }
   }
 
+  if (!src[FPSTR(S_HEATING)][FPSTR(S_INDOOR_TEMP_AVG_TYPE)].isNull()) {
+    uint8_t value = src[FPSTR(S_HEATING)][FPSTR(S_INDOOR_TEMP_AVG_TYPE)].as<uint8_t>();
+
+    switch (value) {
+      case static_cast<uint8_t>(Sensors::AverageType::MEAN):
+      case static_cast<uint8_t>(Sensors::AverageType::MINIMUM):
+      case static_cast<uint8_t>(Sensors::AverageType::MAXIMUM):
+        if (static_cast<uint8_t>(dst.heating.indoorTempAvgType) != value) {
+          dst.heating.indoorTempAvgType = static_cast<Sensors::AverageType>(value);
+          changed = true;
+        }
+        break;
+
+      default:
+        break;
+    }
+  }
+
+  if (!src[FPSTR(S_HEATING)][FPSTR(S_OUTDOOR_TEMP_AVG_TYPE)].isNull()) {
+    uint8_t value = src[FPSTR(S_HEATING)][FPSTR(S_OUTDOOR_TEMP_AVG_TYPE)].as<uint8_t>();
+
+    switch (value) {
+      case static_cast<uint8_t>(Sensors::AverageType::MEAN):
+      case static_cast<uint8_t>(Sensors::AverageType::MINIMUM):
+      case static_cast<uint8_t>(Sensors::AverageType::MAXIMUM):
+        if (static_cast<uint8_t>(dst.heating.outdoorTempAvgType) != value) {
+          dst.heating.outdoorTempAvgType = static_cast<Sensors::AverageType>(value);
+          changed = true;
+        }
+        break;
+
+      default:
+        break;
+    }
+  }
+
   if (!src[FPSTR(S_HEATING)][FPSTR(S_OVERHEAT_PROTECTION)][FPSTR(S_HIGH_TEMP)].isNull()) {
     unsigned char value = src[FPSTR(S_HEATING)][FPSTR(S_OVERHEAT_PROTECTION)][FPSTR(S_HIGH_TEMP)].as<unsigned char>();
 
diff --git a/src_data/locales/en.json b/src_data/locales/en.json
index 90e2a68..deba603 100644
--- a/src_data/locales/en.json
+++ b/src_data/locales/en.json
@@ -315,6 +315,11 @@
         "min": "Minimum temperature",
         "max": "Maximum temperature"
       },
+      "avgType": {
+        "mean": "Mean temperature",
+        "min": "Minimum temperature",
+        "max": "Maximum temperature"
+      },
       "maxModulation": "Max modulation level",
       "ohProtection": {
         "title": "Overheating protection",
@@ -379,7 +384,15 @@
             "set0target": "Set null target"
           }
         },
-        "turboFactor": "Turbo mode coeff."
+        "turboFactor": "Turbo mode coeff.",
+        "indoorTempAvgType": {
+          "title": "Indoor temp. averaging type",
+          "desc": "May be useful when using two or more indoor temp. sensors (when using «Equitherm» and/or «PID»)."
+        },
+        "outdoorTempAvgType": {
+          "title": "Outdoor temp. averaging type",
+          "desc": "May be useful when using two or more outdoor temp. sensors (when using «Equitherm»)."
+        }
       },
 
       "emergency": {
diff --git a/src_data/pages/settings.html b/src_data/pages/settings.html
index 68276fa..63b765c 100644
--- a/src_data/pages/settings.html
+++ b/src_data/pages/settings.html
@@ -198,6 +198,28 @@
                 </label>
               </div>
 
+              <div class="grid">
+                <label>
+                  <span data-i18n>settings.heating.indoorTempAvgType.title</span>
+                  <select name="heating[indoorTempAvgType]">
+                    <option value="0" data-i18n>settings.avgType.mean</option>
+                    <option value="1" data-i18n>settings.avgType.min</option>
+                    <option value="2" data-i18n>settings.avgType.max</option>
+                  </select>
+                  <small data-i18n>settings.heating.indoorTempAvgType.desc</small>
+                </label>
+
+                <label>
+                  <span data-i18n>settings.heating.outdoorTempAvgType.title</span>
+                  <select name="heating[outdoorTempAvgType]">
+                    <option value="0" data-i18n>settings.avgType.mean</option>
+                    <option value="1" data-i18n>settings.avgType.min</option>
+                    <option value="2" data-i18n>settings.avgType.max</option>
+                  </select>
+                  <small data-i18n>settings.heating.outdoorTempAvgType.desc</small>
+                </label>
+              </div>
+
               <hr />
 
               <details>
@@ -1171,6 +1193,8 @@
           setSelectValue("[name='heating[hysteresis][action]']", data.heating.hysteresis.action);
           setInputValue("[name='heating[turboFactor]']", data.heating.turboFactor);
           setInputValue("[name='heating[maxModulation]']", data.heating.maxModulation);
+          setSelectValue("[name='heating[indoorTempAvgType]']", data.heating.indoorTempAvgType);
+          setSelectValue("[name='heating[outdoorTempAvgType]']", data.heating.outdoorTempAvgType);
           setInputValue("[name='heating[overheatProtection][highTemp]']", data.heating.overheatProtection.highTemp, {
             "min": 0,
             "max": data.system.unitSystem == 0 ? 100 : 212