diff --git a/rules-engine/src/rules_engine/engine.py b/rules-engine/src/rules_engine/engine.py
index 027846c2..4d34b082 100644
--- a/rules-engine/src/rules_engine/engine.py
+++ b/rules-engine/src/rules_engine/engine.py
@@ -1,11 +1,19 @@
 from __future__ import annotations
 
 import statistics as sts
-from enum import Enum
 from typing import List, Optional
 
 import numpy as np
-from rules_engine.pydantic_models import SummaryInput, DhwInput, NaturalGasBillingInput, SummaryOutput, BalancePointGraph
+
+from rules_engine.pydantic_models import (
+    BalancePointGraph,
+    DhwInput,
+    FuelType,
+    NaturalGasBillingInput,
+    SummaryInput,
+    SummaryOutput,
+)
+
 
 def getOutputsNaturalGas(summaryInput: SummaryInput, dhwInput: Optional[DhwInput], naturalGasBillingInput: NaturalGasBillingInput)->(SummaryOutput, BalancePointGraph):
 
@@ -101,15 +109,6 @@ def max_heat_load(design_set_point: float, design_temp: float, ua: float) -> flo
     """
     return (design_set_point - design_temp) * ua
 
-
-class FuelType(Enum):
-    """Enum for fuel types. Values are BTU per usage"""
-
-    GAS = 100000
-    OIL = 139600
-    PROPANE = 91333
-
-
 class Home:
     """
     Defines attributes and methods for calculating home heat metrics.
@@ -122,20 +121,18 @@ class Home:
 
     def __init__(
         self,
-        fuel_type: FuelType,
-        heat_sys_efficiency: float,
+        summary_input: SummaryInput,
         temps: List[List[float]],
         usages: List[float],
         inclusion_codes: List[int],
         initial_balance_point: float = 60,
-        thermostat_set_point: float = 68,
         has_boiler_for_dhw: bool = False,
         same_fuel_dhw_heating: bool = False,
     ):
-        self.fuel_type = fuel_type
-        self.heat_sys_efficiency = heat_sys_efficiency
+        self.fuel_type = summary_input.fuel_type
+        self.heat_sys_efficiency = summary_input.heating_system_efficiency
+        self.thermostat_set_point = summary_input.thermostat_set_point
         self.balance_point = initial_balance_point
-        self.thermostat_set_point = thermostat_set_point
         self.has_boiler_for_dhw = has_boiler_for_dhw
         self.same_fuel_dhw_heating = same_fuel_dhw_heating
         self._initialize_billing_periods(temps, usages, inclusion_codes)
diff --git a/rules-engine/src/rules_engine/pydantic_models.py b/rules-engine/src/rules_engine/pydantic_models.py
index e39f59bc..37ee0362 100644
--- a/rules-engine/src/rules_engine/pydantic_models.py
+++ b/rules-engine/src/rules_engine/pydantic_models.py
@@ -2,10 +2,11 @@
 Data models for input and output data in the rules engine.
 """
 
+from datetime import date
 from enum import Enum
 from typing import List, Optional
+
 from pydantic import BaseModel, Field
-from datetime import date
 
 
 class FuelType(Enum):
@@ -17,7 +18,7 @@ class FuelType(Enum):
 
 class SummaryInput(BaseModel):
     """From Summary Tab"""
-    design_temperature: float
+    #design_temperature_override: float
     living_area: float = Field(description="Summary!B10")
     fuel_type: FuelType = Field(description="Summary!B11")
     heating_system_efficiency: float = Field(description="Summary!B12")
diff --git a/rules-engine/tests/test_rules_engine/test_engine.py b/rules-engine/tests/test_rules_engine/test_engine.py
index 0732d886..e31942ab 100644
--- a/rules-engine/tests/test_rules_engine/test_engine.py
+++ b/rules-engine/tests/test_rules_engine/test_engine.py
@@ -2,6 +2,14 @@
 from pytest import approx
 
 from rules_engine import engine
+from rules_engine.pydantic_models import (
+    BalancePointGraph,
+    DhwInput,
+    FuelType,
+    NaturalGasBillingInput,
+    SummaryInput,
+    SummaryOutput,
+)
 
 
 @pytest.mark.parametrize(
@@ -49,13 +57,20 @@ def test_bp_ua_estimates():
     usages = [50, 45, 30, 0.96]
     inclusion_codes = [1, 1, 1, -1]
     heat_sys_efficiency = 0.88
+    living_area = 1000
+    thermostat_set_point = 68
+    setback_temperature = 60
+    setback_hours_per_day = 8
+    fuel_type = FuelType.GAS
+    summary_input = SummaryInput(living_area=living_area, fuel_type=fuel_type, heating_system_efficiency=heat_sys_efficiency, thermostat_set_point=thermostat_set_point, setback_temperature=setback_temperature,setback_hours_per_day=setback_hours_per_day) 
+
+
     home = engine.Home(
-        engine.FuelType.GAS,heat_sys_efficiency,daily_temps_lists, usages, inclusion_codes,  initial_balance_point=58
+        summary_input, daily_temps_lists, usages, inclusion_codes,  initial_balance_point=58
     )
 
-    #home.initialize_billing_periods(daily_temps_lists, usages, inclusion_codes)
-    #home.calculate_avg_non_heating_usage()
-    #home.calculate_balance_point_and_ua()
+
+
     home.calculate()
 
     ua_1, ua_2, ua_3 = [bill.ua for bill in home.bills_winter]
@@ -80,14 +95,21 @@ def test_bp_ua_with_outlier():
     ]
     usages = [60, 50, 45, 30, 0.96]
     inclusion_codes = [1, 1, 1, 1, -1]
-    heat_sys_efficiency=0.88
+    heat_sys_efficiency = 0.88
+
+    living_area = 1000
+    thermostat_set_point = 68
+    setback_temperature = 60
+    setback_hours_per_day = 8
+    fuel_type = FuelType.GAS
+    summary_input = SummaryInput(living_area=living_area, fuel_type=fuel_type, heating_system_efficiency=heat_sys_efficiency, thermostat_set_point=thermostat_set_point, setback_temperature=setback_temperature,setback_hours_per_day=setback_hours_per_day) 
+
+
     home = engine.Home(
-        engine.FuelType.GAS,heat_sys_efficiency,daily_temps_lists, usages, inclusion_codes,  initial_balance_point=58
+        summary_input, daily_temps_lists, usages, inclusion_codes,  initial_balance_point=58
     )
 
-    # home.initialize_billing_periods(daily_temps_lists, usages, inclusion_codes)
-    # home.calculate_avg_non_heating_usage()
-    # home.calculate_balance_point_and_ua()
+
     home.calculate()
 
     ua_1, ua_2, ua_3 = [bill.ua for bill in home.bills_winter]