“boiler”

The simulator always assumes that your existing central heating system has a conventional oil or gas boiler.

To describe your boiler:

• use the “include” flag to include it, otherwise the simulator assumes your house has no boiler and is heated with electricity;
• include in “tariff” the name of the energy tariff it is using;
• give the heating capacity of your boiler in “output_kw”;
• give the boiler’s efficiency in “efficiency”;
• in “cost” include only any additional costs that will be incurred when using in “install_gbp”: normally it is zero. Also include its annual maintenance cost in “maintenance_pa_gbp”.