this post was submitted on 15 Jan 2024
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Electric hot water tanks are a thing. So are electric tankless systems.
I'm aware but I haven't heard people's experiences with them. I ask because I'm shopping for water heating right now and debating the expense of getting 240 run to the water heater for a heat pump.
Electric tankless sounds impossible (yes, I know they exist, I just mean they don't sound like something that should be able to), since the amount of BTUs required to run a gas tankless at peak is absolutely nuts -- tankless gas water-heaters run on 3/4" pipe instead of the normal 1/2" since they need to have so much burst heat. That doesn't sound possible for electric.
People that cheer about tankless have never had a tankless. They're awful. They can't hold a temperature and are a great way to get scalded then frozen. Tanks are very efficient these days and have none of the usage downfalls, besides being a quarter of the cost.
A properly sized natural gas tankless works pretty well.
Electric tankless on the otherhand take so much power I can't imagine anyone actually installs them in a home.
I have a gas tankless, and it works really well. When we moved in, I needed to turn the temperature down to prevent the issue you described; It was set at 65C.
Tankless systems should be set to 50C/120F, whereas tank systems are supposed to be hotter to prevent Legionnaires'.
I've had a 50A unit in a 1BR apartment, and it was fine. Enough heat for showers and for someone to do dishes in the kitchen, or the dishwasher to run. You'd need the larger unit for a home with two showers and four people, but in some use cases, it's really efficient.
What kind of usage do you have? We've got a 120v 40 gallons tank at our cottage and it's more than enough for three showers, worst case it takes about an hour to heat the whole tank. My father in law has an 80 gallons unit and he's never ran out of hot water even with people visiting.
I don't understand how people cannot believe that heating things with electricity works well, it's the norm in Quebec (and anywhere where electricity is cheap really).
Sure where it's cheap here it would cost more to move to electricity. Yah Alberta Advantage /s
My point was more that "Yes, heating your house and water with electricity actually works, the proof is that it's the norm in many places!"
It might be cheaper in Alberta for now but the consequences of heating with petrol will be more expensive in the long run, so it's just shoveling the problem forward...