qwen2.5-1.5b-hvac-precheck-lora-v3

LoRA adapter fine-tuned on Qwen2.5-1.5B-Instruct for building engineering pre-check tasks.

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v3 Improvements

• Improved unit mismatch detection (m³/h vs m³/s)
• Improved unrealistic velocity rejection (duct and pipe)
• Added ΔT sanity trap (hydronic systems)
• Improved missing-input refusal behavior
• Increased trap coverage (~35%)
• Balanced mix of computation and discipline-based responses

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Training Dataset

Trained on: Irfanuruchi/building-engineering-precheck-dataset-v3

Synthetic deterministic engineering dataset (5000 examples).

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Intended Use

• HVAC duct pre-sizing
• Hydronic pipe pre-sizing
• Load → water flow estimation
• Sanity checks
• Early-stage design validation

Not for stamped engineering design or safety-critical decisions without review.