diff --git a/exports/energy_systems/__pycache__/__init__.cpython-38.pyc b/exports/energy_systems/__pycache__/__init__.cpython-38.pyc
deleted file mode 100644
index 2c72bf79..00000000
Binary files a/exports/energy_systems/__pycache__/__init__.cpython-38.pyc and /dev/null differ
diff --git a/exports/energy_systems/__pycache__/heat_pump_export.cpython-38.pyc b/exports/energy_systems/__pycache__/heat_pump_export.cpython-38.pyc
deleted file mode 100644
index f72a477e..00000000
Binary files a/exports/energy_systems/__pycache__/heat_pump_export.cpython-38.pyc and /dev/null differ
diff --git a/exports/energy_systems/air_source_hp_export.py b/exports/energy_systems/air_source_hp_export.py
index 29daa827..333b1d06 100644
--- a/exports/energy_systems/air_source_hp_export.py
+++ b/exports/energy_systems/air_source_hp_export.py
@@ -27,7 +27,7 @@ class AirSourceHPExport(HeatPumpExport):
     template_path = (base_path / tmp_file)
     super().__init__(base_path, city, output_path, template_path)
 
-  def _extract_model_coff(self, hp_model: str, data_type='heat') -> Union[Tuple[List, List], None]:
+  def _extract_model_coff(self, hp_model: str, data_type='heat') -> Union[List, None]:
     """
     Extracts heat pump coefficient data for a specific
     model. e.g 012, 140