diff --git a/datatypes/epc/domain/tests/test_from_site_notes.py b/datatypes/epc/domain/tests/test_from_site_notes.py
index b9d39db84..1c8c211cb 100644
--- a/datatypes/epc/domain/tests/test_from_site_notes.py
+++ b/datatypes/epc/domain/tests/test_from_site_notes.py
@@ -1095,6 +1095,10 @@ class TestSecondaryHeatingTypeCoding:
             # Electric direct-acting (PCDB 691, eff 1.00) — the modal cohort
             # heater; 691 == the old 693 fallback efficiency, so unchanged.
             ("Panel, convector or radiant heaters", 691),
+            # Electric water/oil-filled radiators (PCDB 694, eff 1.00);
+            # unhyphenated secondary-field spelling, distinct from the
+            # hyphenated main-heating room-heater label.
+            ("Water or oil filled radiators", 694),
             # Gas room heaters (PCDB Table 4a column A).
             (
                 "Flush fitting live fuel effect open front fire, "