skyking1
Thinks s/he gets paid by the post
Old is electric. I'd need two 40 amp 2-pole breakers in place of the one I currently have. Electrician does not think it should be a problem but will look at existing setup (load center) tomorrow. Most of the additional cost is running the additional wires from the panel to the heater about 5 feet away.
My biggest concern is that I have 100 amp service. 2x40 means the water heater would use 80 meaning anytime I use the stove and the water heater kicks on I could be tripping the main. I know there are solutions but they could start getting expensive. We'll see what the electrician says tomorrow.
that is a red flag for me. This is the corner people will back into that requires upgrading that 100 amp service. I emphatically suggest not going tankless with that service in place.
Edit: as suggested by flyfish above, look at the hybrids, electric heat pump water heaters. They are on my house design for earning energy credits, I can go several ways to get the required 6 credits on the new build and a hybrid gets 1 of them.
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