The heater was included when we purchased the Scamp. It is a catalytic heater and seemed to work well when we tested it this winter. The heater is labeled Olympian 6100. Fortunately there are instructions clearly printed on it. I had never heard of the brand before.
This floor looks GREAT. I am not really happy with the tile floor I did (was too hasty and it has gotten wet and dinged up already as I had other stuff I should have done first so I am planning to redo it) so I just might go this route!