diff --git a/src/devices/boiler.cpp b/src/devices/boiler.cpp
index 1b2d89588..1c4bde70f 100644
--- a/src/devices/boiler.cpp
+++ b/src/devices/boiler.cpp
@@ -238,7 +238,7 @@ Boiler::Boiler(uint8_t device_type, int8_t device_id, uint8_t product_id, const
                               DeviceValueUOM::NONE,
                               MAKE_CF_CB(set_energyCostRatio),
                               0,
-                              19.9);
+                              20);
         register_device_value(DeviceValueTAG::TAG_BOILER_DATA,
                               &fossileFactor_,
                               DeviceValueType::UINT,
diff --git a/src/devices/thermostat.cpp b/src/devices/thermostat.cpp
index b4567d49a..b7c26b62f 100644
--- a/src/devices/thermostat.cpp
+++ b/src/devices/thermostat.cpp
@@ -3720,7 +3720,7 @@ void Thermostat::register_device_values() {
                               DeviceValueUOM::NONE,
                               MAKE_CF_CB(set_energyCostRatio),
                               0,
-                              19.9);
+                              20);
         register_device_value(DeviceValueTAG::TAG_THERMOSTAT_DATA,
                               &fossileFactor_,
                               DeviceValueType::UINT,