I don't know if this is still available, but it is built like a large thermos bottle, with an insulated tight fitting fibreglass lid and heavy insulation all around. It's designed to run on low speed 24/7 and requires very little energy to maintain that 102 degree temp, even in the depths of winter.
As far as maintenance, I've run it for 20 years on a 15 watt UV sterilizer, and a pleated spa, filter for particulates and have never added a single chemical. It gets a new UV bulb every year or so.
The water is pristine, and no aroma of bromine or any chemicals.
Now, all I have to do is get back in the habit of using it....