Rocket Mass Heater in Hogsback South Africa

Christo TMH 20cm

This is a 20cm (8 inch) J-tube thermal mass heater I built for a client in Hogsback, South Africa, in July-August 2021.

The video shows the first test burn. Loads of wet cement in the mass, and the mass is very cold, so the instant draw before the unit is anywhere near dry indicates that this unit will rock!