Kids nowadays don't use kettles in Britain. It's all done via the Microwave oven and heating water to just warm enough for tea is no different. Sounds like some old school, last century traditions still being practiced on here.
I drink alot of iced sun tea especially in the spring and summer time. It's a mix of orange Peko black tea and good earth traditional sweet & spicy blend and I sweeten it with Lakanto monkfruit to keep it zero-calorie.