240v is delivered to homes on two legs - the legs are split to make 120v circuits for lighting and wall plugs. 240v circuits with both legs are common for things with a large draw such as HVAC, electric water heaters, electric stoves/ovens, electric dryers, etc.

Remember, they didn't want fossil fuels - if you are going all electric, especially for heating (in CANDADA!) you are going to pull some wattage.

That big outdoor pool - in CANADA - doesn't help either.