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Heating system

 
UK NCM system data wizard dialog box: Heating system
Heat source
Type of heat generator (eg boiler) used in the system.
Meter
Meter supplying the heat generator.
Tick if this system also uses CHP
Tick to use a CHP system as the base load for this heating system.
Generator seasonal efficiency
Enter the seasonal efficiency of the heat generator if known. Accept the default if not known.
Does it qualify for ECAs?
Indicate whether the generator qualifies for ECAs (Enhanced Capital Allowances). Generators on the ECA list can be expected to have improved efficiencies, and this is reflected in the default seasonal efficiency value.
Was it installed on or after 1998?
This affects the default seasonal efficiency.