diff --git a/backend/Funding.py b/backend/Funding.py
index 1a3b3b67..dc4f83c5 100644
--- a/backend/Funding.py
+++ b/backend/Funding.py
@@ -434,6 +434,14 @@ class Funding:
             else:
                 return "Non Condensing Gas Boiler"
 
+        if mainheating["has_electricaire"]:
+            # Based on current understanding, electricaire is an electric warm air storage heater, using
+            # off-peak electricity to heat a thermal store and then a fan blows the heat through ducts
+            # into rooms
+            if mainheat_energy_eff == "Very Poor":
+                return "Electric Storage Heaters Responsiveness <=0.2"
+            return "Electric Storage Heaters Responsiveness >0.2"
+
         raise ValueError("Invalid pre heating system")
 
     def calculate_partial_project_abs(