diff --git a/nodes/lora_extract_svd.py b/nodes/lora_extract_svd.py
index cd3e715..b528ba6 100644
--- a/nodes/lora_extract_svd.py
+++ b/nodes/lora_extract_svd.py
@@ -13,12 +13,21 @@ import comfy.utils
 from tqdm import tqdm
 from comfy_api.latest import io
 from safetensors.torch import save_file
-from .merger_utils import MemoryEfficientSafeOpen, transfer_to_gpu_pinned
 from .device_utils import (
     estimate_model_size, prepare_for_large_operation,
     cleanup_after_operation, get_device_capabilities
 )
 
+try:
+    from unifiedefficientloader import MemoryEfficientSafeOpen, transfer_to_gpu_pinned
+    UNIFIED_ENABLED = True
+except Exception as e:
+    UNIFIED_ENABLED = False
+
+if not UNIFIED_ENABLED:
+    from .merger_utils import MemoryEfficientSafeOpen, transfer_to_gpu_pinned
+
+
 
 # =============================================================================
 # Rank Index Functions - Determine LoRA rank from singular values
diff --git a/nodes/lora_merger.py b/nodes/lora_merger.py
index 7ef5109..66cd886 100644
--- a/nodes/lora_merger.py
+++ b/nodes/lora_merger.py
@@ -10,7 +10,6 @@ from tqdm import tqdm
 from comfy_api.latest import io
 from safetensors.torch import save_file
 from typing import List, Dict, Tuple, Optional
-from .merger_utils import MemoryEfficientSafeOpen, transfer_to_gpu_pinned
 from .device_utils import estimate_model_size, prepare_for_large_operation, cleanup_after_operation
 from .lora_resize import (
     detect_lora_format,
@@ -21,6 +20,16 @@ from .lora_resize import (
     _format_lora_key
 )
 
+try:
+    from unifiedefficientloader import MemoryEfficientSafeOpen, transfer_to_gpu_pinned
+    UNIFIED_ENABLED = True
+except Exception as e:
+    UNIFIED_ENABLED = False
+
+if not UNIFIED_ENABLED:
+    from .merger_utils import MemoryEfficientSafeOpen, transfer_to_gpu_pinned
+
+
 def merge_multi_loras(
     lora_paths: List[str],
     lora_weights: List[float],
diff --git a/nodes/lora_resize.py b/nodes/lora_resize.py
index 07b5876..b75e0d6 100644
--- a/nodes/lora_resize.py
+++ b/nodes/lora_resize.py
@@ -14,9 +14,18 @@ from tqdm import tqdm
 from comfy_api.latest import io
 from safetensors.torch import save_file
 from typing import Optional, Dict, Tuple, List
-from .merger_utils import MemoryEfficientSafeOpen, transfer_to_gpu_pinned
 from .device_utils import estimate_model_size, prepare_for_large_operation, cleanup_after_operation
 
+try:
+    from unifiedefficientloader import MemoryEfficientSafeOpen, transfer_to_gpu_pinned
+    UNIFIED_ENABLED = True
+except Exception as e:
+    UNIFIED_ENABLED = False
+
+if not UNIFIED_ENABLED:
+    from .merger_utils import MemoryEfficientSafeOpen, transfer_to_gpu_pinned
+
+
 # Reuse rank functions from extraction module
 from .lora_extract_svd import (
     _index_sv_ratio,
diff --git a/nodes/merger.py b/nodes/merger.py
index 36de235..3977dd8 100644
--- a/nodes/merger.py
+++ b/nodes/merger.py
@@ -7,11 +7,18 @@ from tqdm import tqdm
 from comfy_api.latest import io
 from safetensors.torch import save_file
 from .merger_ops import TWO_MODEL_MODES, THREE_MODEL_MODES, MissingTensorBehavior, MissingTensorError
-from .merger_utils import MemoryEfficientSafeOpen, transfer_to_gpu_pinned
 from .device_utils import (
     estimate_model_size, prepare_for_large_operation, cleanup_after_operation
 )
 
+try:
+    from unifiedefficientloader import MemoryEfficientSafeOpen, transfer_to_gpu_pinned
+    UNIFIED_ENABLED = True
+except Exception as e:
+    UNIFIED_ENABLED = False
+
+if not UNIFIED_ENABLED:
+    from .merger_utils import MemoryEfficientSafeOpen, transfer_to_gpu_pinned
 
 def load_documentation_from_file(filename):
     """Loads documentation from a markdown file in the ../docs/ directory."""
diff --git a/nodes/prunekeys.py b/nodes/prunekeys.py
index 6fbe18f..e0a704e 100644
--- a/nodes/prunekeys.py
+++ b/nodes/prunekeys.py
@@ -7,9 +7,17 @@ from comfy_api.latest import io
 from safetensors.torch import save_file
 from safetensors import safe_open
 from .utils import convert_pt_to_safetensors
-from .merger_utils import MemoryEfficientSafeOpen
 from .device_utils import estimate_model_size, prepare_for_large_operation, cleanup_after_operation
 
+try:
+    from unifiedefficientloader import MemoryEfficientSafeOpen
+    UNIFIED_ENABLED = True
+except Exception as e:
+    UNIFIED_ENABLED = False
+
+if not UNIFIED_ENABLED:
+    from .merger_utils import MemoryEfficientSafeOpen
+
 
 def _prune_keys(model_name: str, model_type: str, keys_to_prune_str: str,
                 use_regex: bool, output_filename: str) -> str:
diff --git a/nodes/renamekeys.py b/nodes/renamekeys.py
index 625f753..b764591 100644
--- a/nodes/renamekeys.py
+++ b/nodes/renamekeys.py
@@ -6,9 +6,17 @@ from comfy_api.latest import io
 from safetensors.torch import save_file
 from safetensors import safe_open
 from .utils import convert_pt_to_safetensors
-from .merger_utils import MemoryEfficientSafeOpen
 from .device_utils import estimate_model_size, prepare_for_large_operation, cleanup_after_operation
 
+try:
+    from unifiedefficientloader import MemoryEfficientSafeOpen
+    UNIFIED_ENABLED = True
+except Exception as e:
+    UNIFIED_ENABLED = False
+
+if not UNIFIED_ENABLED:
+    from .merger_utils import MemoryEfficientSafeOpen
+
 
 def _rename_keys(model_name: str, model_type: str, old_keys_str: str,
                  new_keys_str: str, output_filename: str) -> str: