What calorific value can I get from propane?

The calorific value range is from 12.87 kWh per kilogram at the lower end to 14 kWh per kilogram at the upper end. You should use this upper value only for reference if your entire gas consumption is via an appliance set up for condensing operation. When comparing product offers, make sure that all energy sources are compared on the basis of the same calorific value.