diff --git a/latent_preview.py b/latent_preview.py
index 61754751..4dbcbf45 100644
--- a/latent_preview.py
+++ b/latent_preview.py
@@ -6,6 +6,7 @@ from comfy.cli_args import args, LatentPreviewMethod
 from comfy.taesd.taesd import TAESD
 import folder_paths
 import comfy.utils
+import logging
 
 MAX_PREVIEW_RESOLUTION = 512
 
@@ -70,7 +71,7 @@ def get_previewer(device, latent_format):
                 taesd = TAESD(None, taesd_decoder_path).to(device)
                 previewer = TAESDPreviewerImpl(taesd)
             else:
-                print("Warning: TAESD previews enabled, but could not find models/vae_approx/{}".format(latent_format.taesd_decoder_name))
+                logging.warning("Warning: TAESD previews enabled, but could not find models/vae_approx/{}".format(latent_format.taesd_decoder_name))
 
         if previewer is None:
             if latent_format.latent_rgb_factors is not None:
diff --git a/nodes.py b/nodes.py
index c334cdb9..ca14677d 100644
--- a/nodes.py
+++ b/nodes.py
@@ -8,6 +8,7 @@ import traceback
 import math
 import time
 import random
+import logging
 
 from PIL import Image, ImageOps, ImageSequence
 from PIL.PngImagePlugin import PngInfo
@@ -83,7 +84,7 @@ class ConditioningAverage :
         out = []
 
         if len(conditioning_from) > 1:
-            print("Warning: ConditioningAverage conditioning_from contains more than 1 cond, only the first one will actually be applied to conditioning_to.")
+            logging.warning("Warning: ConditioningAverage conditioning_from contains more than 1 cond, only the first one will actually be applied to conditioning_to.")
 
         cond_from = conditioning_from[0][0]
         pooled_output_from = conditioning_from[0][1].get("pooled_output", None)
@@ -122,7 +123,7 @@ class ConditioningConcat:
         out = []
 
         if len(conditioning_from) > 1:
-            print("Warning: ConditioningConcat conditioning_from contains more than 1 cond, only the first one will actually be applied to conditioning_to.")
+            logging.warning("Warning: ConditioningConcat conditioning_from contains more than 1 cond, only the first one will actually be applied to conditioning_to.")
 
         cond_from = conditioning_from[0][0]
 
@@ -1899,11 +1900,11 @@ def load_custom_node(module_path, ignore=set()):
                 NODE_DISPLAY_NAME_MAPPINGS.update(module.NODE_DISPLAY_NAME_MAPPINGS)
             return True
         else:
-            print(f"Skip {module_path} module for custom nodes due to the lack of NODE_CLASS_MAPPINGS.")
+            logging.warning(f"Skip {module_path} module for custom nodes due to the lack of NODE_CLASS_MAPPINGS.")
             return False
     except Exception as e:
-        print(traceback.format_exc())
-        print(f"Cannot import {module_path} module for custom nodes:", e)
+        logging.warning(traceback.format_exc())
+        logging.warning(f"Cannot import {module_path} module for custom nodes:", e)
         return False
 
 def load_custom_nodes():
@@ -1924,14 +1925,14 @@ def load_custom_nodes():
             node_import_times.append((time.perf_counter() - time_before, module_path, success))
 
     if len(node_import_times) > 0:
-        print("\nImport times for custom nodes:")
+        logging.warning("\nImport times for custom nodes:")
         for n in sorted(node_import_times):
             if n[2]:
                 import_message = ""
             else:
                 import_message = " (IMPORT FAILED)"
-            print("{:6.1f} seconds{}:".format(n[0], import_message), n[1])
-        print()
+            logging.warning("{:6.1f} seconds{}: {}".format(n[0], import_message, n[1]))
+        logging.warning("")
 
 def init_custom_nodes():
     extras_dir = os.path.join(os.path.dirname(os.path.realpath(__file__)), "comfy_extras")
@@ -1973,12 +1974,12 @@ def init_custom_nodes():
     load_custom_nodes()
 
     if len(import_failed) > 0:
-        print("WARNING: some comfy_extras/ nodes did not import correctly. This may be because they are missing some dependencies.\n")
+        logging.warning("WARNING: some comfy_extras/ nodes did not import correctly. This may be because they are missing some dependencies.\n")
         for node in import_failed:
-            print("IMPORT FAILED: {}".format(node))
-        print("\nThis issue might be caused by missing newly dependencies added the last time you updated ComfyUI.")
+            logging.warning("IMPORT FAILED: {}".format(node))
+        logging.warning("\nThis issue might be caused by new missing dependencies added the last time you updated ComfyUI.")
         if args.windows_standalone_build:
-            print("Please run the update script: update/update_comfyui.bat")
+            logging.warning("Please run the update script: update/update_comfyui.bat")
         else:
-            print("Please do a: pip install -r requirements.txt")
-        print()
+            logging.warning("Please do a: pip install -r requirements.txt")
+        logging.warning("")