My panel has a 15-amp breaker for two-bathroom outlets and two outdoor outlets. Is that normal? I would like to replace that with a 20 amp breaker. Also, I want to replace my water boiler with the "Ecosmart ECO 36 - 36kw 240V 150A Electric Tankless Water Heater" but that requires 4 x 40 amp breakers (my electrical panel is 200 amps).
So I'm trying to make room for it on my electrical panel by replacing the quad breaker with a single-pole tandem 20 amp breaker since the water boiler won't need the quad breaker anymore. Is all of that possible and correct to do?
In the future, I will remove the furnace and replace it with an all-in-one heat pump, perhaps some of the furnace breaker slots will be freed up.
Another thing to note is that my refrigerator and microwave are on the same line and when the toaster and microwave get used the microwave power dims a bit. My microwave keeps dying every few years. Perhaps the fridge and microwave should be on their own breaker, right now it feels like too many things are competing for power on that line/breaker. My electrical panel is exactly the way the electrician left it when the home was made in 2006, except for the labels.