The first four models have the same heating capacity 6,500 BTU (1.9 kW) low to 16,250 BTU (4.8 kW) high. The fuel consumption is per 24 hours: 4.8 litres (low) and 12 litres (high). The specifications of model ‘Atlantic’ are higher, about 30-50% greater output. Your choice of stove will be determined often by the cut-out in your kitchen, the oven size, the position of the chimney outlet and, of course, what appeals to you.