diff --git a/recommendations/tests/test_ventilation_recommendations.py b/recommendations/tests/test_ventilation_recommendations.py
index ea87a632..15c9435c 100644
--- a/recommendations/tests/test_ventilation_recommendations.py
+++ b/recommendations/tests/test_ventilation_recommendations.py
@@ -10,6 +10,7 @@ class TestVentilationRecommendations:
         epc_record = EPCRecord()
         epc_record.prepared_epc = {"mechanical-ventilation": "natural"}
         input_property1 = Property(id=1, postcode="F4k3 6", address="623 fake street", epc_record=epc_record)
+        input_property1.already_installed = []
 
         recommender = VentilationRecommendations(
             property_instance=input_property1,
@@ -22,16 +23,18 @@ class TestVentilationRecommendations:
 
         assert len(recommender.recommendation) == 1
 
-        assert recommender.recommendation[0]["total"] == 1071.0
+        assert recommender.recommendation[0]["total"] == 560.0
         assert recommender.recommendation[0]["type"] == "mechanical_ventilation"
         assert len(recommender.recommendation[0]["parts"]) == 1
-        assert recommender.recommendation[0]["parts"][0]["description"] == 'Mechanical Extract Ventilation'
+        assert recommender.recommendation[0]["parts"][0][
+                   "description"] == 'Decentralised mechanical extract ventilation'
         assert recommender.recommendation[0]["parts"][0]["quantity"] == 2
 
     def test_missing_ventilation(self):
         epc_record = EPCRecord()
         epc_record.prepared_epc = {"mechanical-ventilation": None}
         input_property2 = Property(id=1, postcode="F4k3 6", address="623 fake street", epc_record=epc_record)
+        input_property2.already_installed = []
 
         recommender2 = VentilationRecommendations(
             property_instance=input_property2,
@@ -44,16 +47,18 @@ class TestVentilationRecommendations:
 
         assert len(recommender2.recommendation) == 1
 
-        assert recommender2.recommendation[0]["total"] == 1071.0
+        assert recommender2.recommendation[0]["total"] == 560.0
         assert recommender2.recommendation[0]["type"] == "mechanical_ventilation"
         assert len(recommender2.recommendation[0]["parts"]) == 1
-        assert recommender2.recommendation[0]["parts"][0]["description"] == 'Mechanical Extract Ventilation'
+        assert recommender2.recommendation[0]["parts"][0][
+                   "description"] == 'Decentralised mechanical extract ventilation'
         assert recommender2.recommendation[0]["parts"][0]["quantity"] == 2
 
     def test_nodata_ventilation(self):
         epc_record = EPCRecord()
         epc_record.prepared_epc = {"mechanical-ventilation": "NO DATA!!"}
         input_property3 = Property(id=1, postcode="F4k3 6", address="623 fake street", epc_record=epc_record)
+        input_property3.already_installed = []
 
         recommender3 = VentilationRecommendations(
             property_instance=input_property3,
@@ -66,16 +71,18 @@ class TestVentilationRecommendations:
 
         assert len(recommender3.recommendation) == 1
 
-        assert recommender3.recommendation[0]["total"] == 1071.0
+        assert recommender3.recommendation[0]["total"] == 560.0
         assert recommender3.recommendation[0]["type"] == "mechanical_ventilation"
         assert len(recommender3.recommendation[0]["parts"]) == 1
-        assert recommender3.recommendation[0]["parts"][0]["description"] == 'Mechanical Extract Ventilation'
+        assert recommender3.recommendation[0]["parts"][0][
+                   "description"] == 'Decentralised mechanical extract ventilation'
         assert recommender3.recommendation[0]["parts"][0]["quantity"] == 2
 
     def test_existing_ventilation_1(self):
         epc_record = EPCRecord()
         epc_record.prepared_epc = {"mechanical-ventilation": "mechanical, extract only"}
         input_property4 = Property(id=1, postcode="F4k3 6", address="623 fake street", epc_record=epc_record)
+        input_property4.already_installed = []
         input_property4.identify_ventilation()
         assert input_property4.has_ventilation
 
@@ -94,6 +101,7 @@ class TestVentilationRecommendations:
         epc_record = EPCRecord()
         epc_record.prepared_epc = {"mechanical-ventilation": "mechanical, supply and extract"}
         input_property5 = Property(id=1, postcode="F4k3 6", address="623 fake street", epc_record=epc_record)
+        input_property5.already_installed = []
         input_property5.identify_ventilation()
         assert input_property5.has_ventilation