From 059a9bc8ed97bd3067ad912cca2189814c358eba Mon Sep 17 00:00:00 2001
From: Franck Nijhof <git@frenck.dev>
Date: Tue, 20 Jul 2021 22:03:10 +0200
Subject: [PATCH] Fix modbus setting string as temperature in climate platform
 (#53249)

---
 homeassistant/components/modbus/climate.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/homeassistant/components/modbus/climate.py b/homeassistant/components/modbus/climate.py
index 36871c68d9b..e8f281bdd1f 100644
--- a/homeassistant/components/modbus/climate.py
+++ b/homeassistant/components/modbus/climate.py
@@ -207,4 +207,7 @@ class ModbusThermostat(BaseStructPlatform, RestoreEntity, ClimateEntity):
         self.unpack_structure_result(result.registers)
 
         self._available = True
-        return self._value
+
+        if self._value is None:
+            return None
+        return float(self._value)