Is copper better than aluminum for loops?
Absolutely and for the most part. It has over a 20% difference in efficiency according to some modeling software. More efficiency equals more performance. It’s also a lot easier to solder, and can be found at your local hardware store. However, aluminum is far lighter. It’s a trade-off. I would hate to know what my 12 ft x 12 ft loop with 2 inch diameter pipe would weigh if it was made out of copper instead of aluminum. Please remember, my aluminum loop works great.
