diff --git a/ghpghx/models.py b/ghpghx/models.py
index 1f3f211fa..fd1e2c52f 100644
--- a/ghpghx/models.py
+++ b/ghpghx/models.py
@@ -195,7 +195,7 @@ def clean(self):
  
     # Hybrid flag
     hybrid_ghx_sizing_method = models.TextField(null=True, blank=True, default="None",
-        help_text="Possible values: 'Fractional' (user inputs fraction of full GHX size), 'Automatic' (REopt determines based on the smaller heating or cooling load), 'None' (non-hybrid)")
+        help_text="Possible values: 'Fractional' (user inputs fraction of full GHX size), 'Automatic' (REopt determines based on the smaller heating or cooling load), 'Heater' (an auxiliary heating unit is sized), 'Cooler' (an auxiliary cooling unit is sized), 'None' (non-hybrid)")
     hybrid_auto_ghx_sizing_flag = models.BooleanField(blank=True, null=True, default=False)
     hybrid_sizing_flag = models.FloatField(null=True, blank=True, default=1.0,
         help_text="Possible values: -2 (size for heating), -1.0 (size for cooling), 1.0 (non-hybrid), value between 0-1 (fraction of full GHX size)")