diff --git a/src/app/db/schema/landlord_overrides.ts b/src/app/db/schema/landlord_overrides.ts
index 13005b18..fb9d90ed 100644
--- a/src/app/db/schema/landlord_overrides.ts
+++ b/src/app/db/schema/landlord_overrides.ts
@@ -246,6 +246,11 @@ export const MainHeatingSystemValues: [string, ...string[]] = [
   "Gas room heater, open flue 1980 or later",
   "Gas room heater, open flue pre-1980",
   "Electric storage heaters, high heat retention",
+  "Solid fuel room heater, open fire",
+  "Solid fuel room heater, open fire with back boiler",
+  "Solid fuel room heater, closed with boiler",
+  "Electric boiler",
+  "Electric CPSU",
   "Unknown",
 ];