Update app/hvac_loads.py

app/hvac_loads.py

@@ -18,6 +18,7 @@ import logging
 import math
 from utils.ctf_calculations import CTFCalculator, ComponentType, CTFCoefficients
 from utils.solar import SolarCalculations  # Import SolarCalculations for SHGC data
+from app.m_c_data import SAMPLE_MATERIALS, SAMPLE_FENESTRATIONS, DEFAULT_MATERIAL_PROPERTIES, DEFAULT_WINDOW_PROPERTIES
 
 # Configure logging
 logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(levelname)s - %(message)s')