Copper is a decent conductor of heat, and that shortens the already-quick water heating time even more. However, the downside of using copper for heating chambers is that it may not work well with water with high levels of impurities.
Besides, do old water heaters have copper in them?
Electric Water Heater Recycling
The heating elements in an electric hot water heater are typically made from a stainless steel or zinc plated copper sheath that surrounds a wire made from nichrome.
Just so, is copper cheaper than stainless steel? Copper is often more expensive than that of stainless steel.. This may sometimes change based on the current market value, but you should expect to pay on avergage about 25% more for copper. Maintenace of copper is a bit more time consuming if you want to maintain its finish.
Also to know is, what is less with copper heat exchanger?
Corrosion resistance is essential in heat transfer applications where fluids are involved, such as in hot water tanks, radiators, etc. The only affordable material that has similar corrosion resistance to copper is stainless steel.