diff --git a/domain/modelling/contingencies.py b/domain/modelling/contingencies.py
index 8d011ffb..7114313d 100644
--- a/domain/modelling/contingencies.py
+++ b/domain/modelling/contingencies.py
@@ -19,6 +19,7 @@ _CONTINGENCY_RATES: dict[str, float] = {
     "secondary_glazing": 0.15,
     "low_energy_lighting": 0.26,
     "high_heat_retention_storage_heaters": 0.10,
+    "air_source_heat_pump": 0.25,
 }
 
 
diff --git a/harness/report.py b/harness/report.py
index f9459bc4..c93f0d02 100644
--- a/harness/report.py
+++ b/harness/report.py
@@ -144,6 +144,15 @@ def _triggers_for(epc: EpcPropertyData, measure_type: str) -> dict[str, Any]:
             ),
             "mains_gas": epc.sap_energy_source.mains_gas,
         }
+    if measure_type == "air_source_heat_pump":
+        # heating_recommendation.py offers ASHP to any non-flat house/bungalow
+        # not already a heat pump (eligibility is physical/planning only).
+        return {
+            "property_type": epc.property_type,
+            "main_heating_category": (
+                epc.sap_heating.main_heating_details[0].main_heating_category
+            ),
+        }
     return {}
 
 
diff --git a/harness/sample_catalogue.json b/harness/sample_catalogue.json
index fb34e28b..0d17b2b6 100644
--- a/harness/sample_catalogue.json
+++ b/harness/sample_catalogue.json
@@ -11,5 +11,6 @@
   "double_glazing": { "unit_cost_per_m2": 600.0 },
   "secondary_glazing": { "unit_cost_per_m2": 510.0 },
   "low_energy_lighting": { "unit_cost_per_m2": 8.0 },
-  "high_heat_retention_storage_heaters": { "unit_cost_per_m2": 3500.0 }
+  "high_heat_retention_storage_heaters": { "unit_cost_per_m2": 3500.0 },
+  "air_source_heat_pump": { "unit_cost_per_m2": 12000.0 }
 }
diff --git a/orchestration/modelling_orchestrator.py b/orchestration/modelling_orchestrator.py
index df375f65..4773b2f1 100644
--- a/orchestration/modelling_orchestrator.py
+++ b/orchestration/modelling_orchestrator.py
@@ -210,7 +210,7 @@ def _candidate_recommendations(
         recommend_floor_insulation(effective_epc, products),
         recommend_glazing(effective_epc, products, planning_restrictions),
         recommend_lighting(effective_epc, products),
-        recommend_heating(effective_epc, products),
+        recommend_heating(effective_epc, products, planning_restrictions),
     )
     return [recommendation for recommendation in found if recommendation is not None]
 
diff --git a/tests/harness/test_console.py b/tests/harness/test_console.py
index 2f1d6bd5..a252b06a 100644
--- a/tests/harness/test_console.py
+++ b/tests/harness/test_console.py
@@ -35,6 +35,7 @@ _GENERATOR_MEASURE_TYPES = (
     "secondary_glazing",
     "low_energy_lighting",
     "high_heat_retention_storage_heaters",
+    "air_source_heat_pump",
 )
 
 
diff --git a/tests/orchestration/test_ara_first_run_pipeline_integration.py b/tests/orchestration/test_ara_first_run_pipeline_integration.py
index 96f2b0dd..49c77033 100644
--- a/tests/orchestration/test_ara_first_run_pipeline_integration.py
+++ b/tests/orchestration/test_ara_first_run_pipeline_integration.py
@@ -128,6 +128,14 @@ def test_first_run_baselines_through_repos_and_is_idempotent_on_rerun(
         # the double-glazing Product (ADR-0022).
         session.add_all(
             [
+                MaterialRow(
+                    id=5,
+                    type="air_source_heat_pump",
+                    total_cost=12000.0,
+                    cost_unit="gbp_per_unit",
+                    is_active=True,
+                    description="Air source heat pump",
+                ),
                 MaterialRow(
                     id=1,
                     type="solid_floor_insulation",
@@ -244,6 +252,14 @@ def test_modelling_optimises_and_persists_a_multi_measure_plan(
         )
         session.add_all(
             [
+                MaterialRow(
+                    id=5,
+                    type="air_source_heat_pump",
+                    total_cost=12000.0,
+                    cost_unit="gbp_per_unit",
+                    is_active=True,
+                    description="Air source heat pump",
+                ),
                 MaterialRow(
                     id=1,
                     type="cavity_wall_insulation",
@@ -407,6 +423,14 @@ def test_modelling_recommends_nothing_when_already_at_the_target_band(
         # nothing is ultimately selected.
         session.add_all(
             [
+                MaterialRow(
+                    id=14,
+                    type="air_source_heat_pump",
+                    total_cost=12000.0,
+                    cost_unit="gbp_per_unit",
+                    is_active=True,
+                    description="Air source heat pump",
+                ),
                 MaterialRow(
                     id=10,
                     type="cavity_wall_insulation",
@@ -548,6 +572,14 @@ def test_listed_uprn_ingested_blocks_solid_wall_insulation_in_modelling(
         # ventilation dependency, so every Product they reach for must exist.
         session.add_all(
             [
+                MaterialRow(
+                    id=5,
+                    type="air_source_heat_pump",
+                    total_cost=12000.0,
+                    cost_unit="gbp_per_unit",
+                    is_active=True,
+                    description="Air source heat pump",
+                ),
                 MaterialRow(
                     id=1,
                     type="external_wall_insulation",