I have 2 AO Smith Pro Max electric heaters, I need more hot water available. I would normally opt for parallel installation. However, the units are of different capacities. 1 is an 80 gal and the other a 60.
Series seems the best option, which should be first in line?
Also, does each unit need its own expansion tank?
Thanks!
Series seems the best option, which should be first in line?
Also, does each unit need its own expansion tank?
Thanks!