diff --git a/model_data/epc_attributes/HotWaterAttributes.py b/model_data/epc_attributes/HotWaterAttributes.py
index 3da3f9b0..79dfe62d 100644
--- a/model_data/epc_attributes/HotWaterAttributes.py
+++ b/model_data/epc_attributes/HotWaterAttributes.py
@@ -12,6 +12,7 @@ class HotWaterAttributes(BaseUtility):
         # A device that transfers heat from a source (like the ground or air) into a building to provide hot water
         'electric immersion',  # An electric device that heats water using electric resistance
         'gas boiler',  # A boiler that uses gas as fuel to heat water
+        'oil boiler',  # A boiler that uses oil as fuel to heat water
         'electric instantaneous',  # Similar to gas instantaneous, but uses electricity as its energy source
         'gas multipoint',  # A gas water heater that can supply hot water to multiple points of use at once
         'heat pump'  # A general category for heat pumps, regardless of the energy source
@@ -89,11 +90,21 @@ class HotWaterAttributes(BaseUtility):
         'from second main heating system': 'from secondary system',
     }
 
+    WELSH_TEXT = {
+        "ogçör brif system": "from main system",
+    }
+
     def __init__(self, description: str):
         self.description: str = clean_description(description.lower())
 
         self.nodata = not description or description in self.DATA_ANOMALY_MATCHES
 
+        translation = self.WELSH_TEXT.get(self.description)
+
+        if translation:
+            self.nodata = False
+            self.description = translation
+
         if not any(
             self._keyword_in_description(keywords)
             for keywords in [
diff --git a/model_data/tests/test_data/test_hot_water_attributes_cases.py b/model_data/tests/test_data/test_hot_water_attributes_cases.py
index 18d69733..b420a74b 100644
--- a/model_data/tests/test_data/test_hot_water_attributes_cases.py
+++ b/model_data/tests/test_data/test_hot_water_attributes_cases.py
@@ -125,5 +125,13 @@ hotwater_cases = [
      'system_type': 'from secondary system',
      'thermostat_characteristics': None, 'heating_scope': None, 'energy_recovery': None, 'tariff_type': None,
      'extra_features': None, 'chp_systems': None, 'distribution_system': None, 'no_system_present': None,
+     'assumed': False, "appliance": None},
+    {'original_description': 'OGÇÖr brif system', 'heater_type': None, 'system_type': 'from main system',
+     'thermostat_characteristics': None, 'heating_scope': None, 'energy_recovery': None, 'tariff_type': None,
+     'extra_features': None, 'chp_systems': None, 'distribution_system': None, 'no_system_present': None,
+     'assumed': False, "appliance": None},
+    {'original_description': 'Oil boiler/circulator', 'heater_type': None, 'system_type': 'oil boiler',
+     'thermostat_characteristics': None, 'heating_scope': None, 'energy_recovery': None, 'tariff_type': None,
+     'extra_features': None, 'chp_systems': None, 'distribution_system': 'circulator', 'no_system_present': None,
      'assumed': False, "appliance": None}
 ]