## Common ground
All options are hydronic radiant cooling and heating panels, using water-based fluid to transfer heat or coolness through embedded pipes.
## Options at a glance
**7322.19 – Stainless steel**
- **Defining trait:** Made from corrosion-resistant stainless steel, ideal for long-term durability in harsh environments.
- **Typical examples:** Panels in industrial buildings, coastal facilities, or high-moisture areas.
- **Best fit when:** Long lifespan and resistance to rust or chemical exposure are critical.
**7616.99 – Aluminium**
- **Defining trait:** Made from lightweight, highly thermally conductive aluminium, enabling faster heat transfer.
- **Typical examples:** Residential HVAC systems, commercial offices, or retrofit installations.
- **Best fit when:** Fast response time and energy efficiency are prioritized over long-term corrosion resistance.
## Key differences
| Feature | Stainless Steel (7322.19) | Aluminium (7616.99) |
|-----------------------|----------------------------|----------------------|
| Thermal conductivity | Lower | High |
| Weight | Heavier | Lighter |
| Corrosion resistance | Excellent | Moderate (needs coating) |
| Response time | Slower | Faster |
## How to choose
- Is long-term durability in humid or corrosive environments essential? → 7322.19
- Does fast heating/cooling and lightweight installation matter more? → 7616.99
## Overlaps & pitfalls
A panel may use aluminium with protective coating, blurring the line—choose based on **primary material**. No clear priority: if corrosion resistance is key (e.g., near sea), pick stainless steel; if efficiency and speed matter most (e.g., homes), choose aluminium