WAN 2.2 High and Low | How to add new LoRAs in ComfyUI with Wan 2.2

How to add new LoRAs in ComfyUI with Wan 2.2

1. Load the base model

   • On the left you start with the Load Diffusion Model node
     (wan2.2_i2v_high_noise... or wan2.2_i2v_low_noise...).

   • This is your base Wan model.

2. Attach the first LoRA

   • Right after that, add a LoraLoaderModelOnly node.

   • Select your LoRA (.safetensors) inside.

   • The strength_model slider controls how strong the LoRA is applied (common values: 1.0 – 2.0).

3. Stack more LoRAs

   • To use multiple LoRAs, just chain more LoraLoaderModelOnly nodes one after another.

   • The order can affect the result.

4. Connect to ModelSamplingSD3

   • At the end of the LoRA chain, connect everything into a ModelSamplingSD3 node.

   • This prepares the final model for the KSampler.

5. Two base model paths (High Noise & Low Noise)

   • Wan 2.2 has two base models:

     • wan2.2:i2v_high_noise

     • wan2.2:i2v_low_noise

   • Each can have its own LoRAs stacked, and both outputs can be sent into the KSampler.

To be precise:

• The high noise model chain (base model + LoRAs) must end in its own ModelSamplingSD3 → then connect to its own KSampler.

• The low noise model chain (base model + LoRAs) must also end in its own ModelSamplingSD3 → then into a separate KSampler.

So you do not merge them into one ModelSamplingSD3 or one KSampler.
They are two parallel pipelines — one for high noise, one for low noise.

👉 This way you can render with both high-noise and low-noise versions independently.

⚠️ Important:
Always use LoraLoaderModelOnly (not the normal LoraLoader).

• LoraLoader replaces the entire model.

• LoraLoaderModelOnly stacks the LoRA on top of the Wan base model — that’s what you want.

 ┌───────────────────────┐
 │   Base Model (High)   │  wan2.2:i2v_high_noise
 └─────────┬─────────────┘
           │
    [LoraLoaderModelOnly]
           │
    [LoraLoaderModelOnly]
           │
    [LoraLoaderModelOnly]
           │
 ┌───────────────────────┐
 │   ModelSamplingSD3    │   (High path)
 └─────────┬─────────────┘
           │
 ┌───────────────────────┐
 │      KSampler         │   (High path)
 └───────────────────────┘


 ┌───────────────────────┐
 │   Base Model (Low)    │  wan2.2:i2v_low_noise
 └─────────┬─────────────┘
           │
    [LoraLoaderModelOnly]
           │
    [LoraLoaderModelOnly]
           │
    [LoraLoaderModelOnly]
           │
 ┌───────────────────────┐
 │   ModelSamplingSD3    │   (Low path)
 └─────────┬─────────────┘
           │
 ┌───────────────────────┐
 │      KSampler         │   (Low path)
 └───────────────────────┘