There are 22 possible improvement measures, designated from A to V. This must record measures deselected by DEA (A to V is the full set, only E, N, U and V are considered at the moment for new build). Various measurements for each wall of a particular storey. Unique name which identifies this wall within its storey. Can be just a number, e.g. "1". However, a wall cannot have the same name as an opening or a roof. Descriptive notes about the wall. Type of wall (exposure). Total wall area in square metres, inclusive of any openings. Exposed wall U-value. Whether the wall is curtain walling, i.e. a facade construction consisting of a frame of aluminium vertical and horizontal members, infilled with glazing units and opaque panels. Heat capacity per unit area in kJ/m²K. Various measurements for each exposed roof that makes up a particular Building-Part. Unique name which identifies this roof. Can be just a number, e.g. "1". However, a roof cannot have the same name as a wall. Descriptive notes about the roof. Total roof area in square metres, inclusive of any openings. Exposed roof U-value. Heat capacity per unit area in kJ/m²K. Community heating systems used by the property. Various measurements for each thermal bridge that makes up a particular Building-Part. Code to indicate a particular type of thermal bridge; only if thermal bridge code is: user defined (individual values). Length of the thermal bridge in metres; only if thermal bridge code is: user defined (individual values). Linear thermal transmittance (psi-value); only if thermal bridging is user defined individual values. Various measurements for each exposed opening that makes up a particular Building-Part. Unique name which identifies this opening. Can be just a number, e.g. "1". However, an opening cannot have the same name as a wall. The name of the SAP-Opening-Type for this opening. Name of the wall or roof which contains the opening. Compass direction in which the opening faces. The width of the opening in metres. If the Width field is used to record the opening area, set the Height to 1. The height of the opening in metres. If the Height field is used to record the opening area, set the Width to 1. Exposed openings that make up a particular Building-Part. Exposed roofs that make up a particular Building-Part. Details of a community system which heats the Main Building. Specifies what kind of heating the community system is used for. Community heating, hot water cylinder in dwelling? Community heating distribution Used when Community-Heating-Distribution-Type is calculated. Used for hot-water-only systems. Various measurements for the floor of a particular storey. Building storey on which the floor is located. Descriptive notes about the floor. Type of floor (exposure). The total floor area of the storey in square metres. Average height of the storey in metres. The estimated total heat loss area for the floor in square metres. Heat loss floor U-value. Heat capacity of floor per unit area in kJ/m²K. Heat capacity of ceiling below. Applies to the non-heat-loss area of an upper floor. Thermal bridges that make up a particular Building-Part. Code which indicates how the thermal bridge data has been recorded. Global y-value for all thermal bridges in watts per square metre per kelvin; only if thermal bridge code is: user defined (global y-value) Reference to the details of the calculation of the global y-value; only if thermal bridging is user defined global y-value. Exposed walls that make up a particular Storey. Various measurements for a particular type of exposed opening that makes up a particular property. Opening types are used to capture common features shared by multiple openings, to avoid having to record the same data explicitly for each opening. Unique name which identifies this opening type. Can be just a number, e.g. "1". Descriptive notes about the opening type. The source of the data for this type of opening. The (physical) type of opening that this opening type represents. The type of glazing; if U-value is from BFRC or manufacturer declaration, give as one of - single - double - triple. Gap between glass panes; only if SAP table and double or triple glazed. Is the opening argon-filled? Only if SAP table. The type of frame, only if data source is SAP table and it is a window, roof window or half-glazed door. The solar transmittance; not if a door. The frame factor; not if BFRC data and not if a door. U-value; only if BFRC or manufacturer declaration. Types of exposed openings that make up a particular property. Opening types are used to capture common features shared by multiple openings, to avoid having to record the same data explicitly for each opening. Details of the means by which the building is ventilated The number of Open Fireplaces in the Property. An Open Fireplace is a fireplace that still allows air to pass between the inside of the Property and the outside. The number of Open Flues in the Property. For backward compatibility only, do not use. The number of flueless gas fires in the Property. Whether there has been a pressure test, or whether an assumed value is used for the air permeability. Air permeability; only if pressure test (yes or assumed). The type of ground floor; nly if no pressure test. The construction of the walls; only if no pressure test. Is there a draft lobby? Only if no pressure test. Draughtstripping percentage; only if no pressure test. The number of sheltered sides in the Property. The type of ventilation. Source of mechanical ventilation data; only if mechanical ventilation. Mechanical vent system index number; if mechanical vent data from database (MEV c, MEV dc, MV, MVHR). Mechanical ventilation system make and model; if mech vent system data is manufacturer declaration. Number of wet rooms; if mech vent data from manufacturer declaration or database (MEV c, MV, MVHR). Mechanical vent specific fan power in watts per (litres per second); if mechanical vent data from manufacturer declaration (MEV c, MV, MVHR). Mechanical vent heat recovery efficiency percentage; if mechanical vent data from manufacturer declaration (MVHR). Mechanical vent duct type; if MEV c, MV or MVHR. Mechanical vent duct insulation; if MVHR. MEV dc, number of fans in room, kitchen; if mechanical vent data from database or manufacturer declaration (MEV dc). MEV dc, specific fan power of fans in room, kitchen, in watts per (litres per second); if mechanical vent data from manufacturer declaration (MEV dc). MEV dc, number of fans in room, rooms other than kitchen; if mechanical vent data from database or manufacturer declaration (MEV dc). MEV dc, specific fan power of fans in room, rooms other than kitchen, in watts per (litres per second); if mechanical vent data from manufacturer declaration (MEV dc). MEV dc, number of fans via duct, kitchen; if mechanical vent data from database or manufacturer declaration (MEV dc). MEV dc, specific fan power of fans via duct, kitchen, in watts per (litres per second); if mechanical vent data from manufacturer declaration (MEV dc). MEV dc, number of fans via duct, rooms other than kitchen; if mechanical vent data from database or manufacturer declaration (MEV dc). MEV dc, specific fan power of fans via duct, rooms other than kitchen, in watts per (litres per second); if mechanical vent data from manufacturer declaration (MEV dc). MEV dc, number of fans through wall, kitchen; if mechanical vent data from database or manufacturer declaration (MEV dc). MEV dc, specific fan power of fans through wall, kitchen, in watts per (litres per second); if mechanical vent data from manufacturer declaration (MEV dc). MEV dc, number of fans through wall, rooms other than kitchen; if mechanical vent data from database or manufacturer declaration (MEV dc). MEV dc, specific fan power of fans through wall, rooms other than kitchen, in watts per (litres per second); if mechanical vent data from manufacturer declaration (MEV dc). These are the specific data-items collected by the HI / EA needed to perform the SAP calculation. Type of SAP data that has been collected. Various measurements a particular Property. The type of Property, such as House, Flat, Mansion, Maisonette etc. The building type of the Property e.g. Detached, Semi-Detached, Terrace etc. Together with the Property Type, the Built Form provides a structured description of the property. The size of the living area in square metres. The living area is the room marked on a plan as the lounge or living room, or the largest public room (irrespective of usage by particular occupants), together with any rooms not separated from the lounge or living room by doors, and including any cupboards directly accessed from the lounge or living room. Living area does not, however, extend over more than one storey, even when stairs enter the living area directly. The orientation of the front of the property. Type of conservatory. For backwards compatibility only, do not use. For backwards compatibility only, do not use. For backwards compatibility only, do not use. For backwards compatibility only, do not use. For backwards compatibility only, do not use. For backwards compatibility only, do not use. Is property in a smoke control area? Only if a solid fuel appliance is used. Additional allowable electricity generation applicable to this dwelling in kWh per square metre; only if Zero Carbon Home assessment. Design limit for total water use. Indication of where a flat is located in a building. Storeys that make up a particular Building-Part. Details of the significant building parts that comprise the main habitable building in the property. The main habitable area generally consists of a single main building but can over time be extended to include extensions such as new wings and additional storeys. For the purpose of calculating the overall Energy Assessment for the property details of each distinct Building Part, such as its construction, have to be gathered because different materials have different insulation ratings (obviously) which affects the overall rating. A permanent structure that forms part of the Property and is built primarily for human habitation. A Building Part is usually made up of one or more Storey's and may contain a number of Internal Structural Features. An extension is also a Building Part. An integer value which uniquely identifies the building part in the property. The value "1" must be assigned to the main dwelling. Identifier for the Building part - generally only required if there are more that one Building Parts of the same type e.g. "West Wing" and "East Wing" Extensions The year when this building part was constructed. Not used if 'Construction-Age-Band' is used. The age band when this building part was constructed. Not used if 'Construction-Year' is used. Amount of overshading of windows. Thermal Mass Parameter in kJ/m²K. If omitted it is calculated using the kappa values of each element. Details of the main Electricity supply to the Property. Number of wind turbines; 0 if none. Wind turbine rotor diameter in metres; only if wind turbine. Wind turbine hub height above building in metres; only if wind turbine. Terrain type; only if wind turbine. Number of fixed lighting outlets. Number of low-energy fixed lighting outlets. % of fixed lighting outlets that are low-energy to nearest whole %. This is given in addition to the total and low-energy lighting count. Type of electricity tariff. Electricity generated by hydro-electric generator, in kWh/year Details of the means by which the Main Building is heated. The type of Water Heating present in the Property. The type of fuel used to power the central heating e.g. Gas, Electricity. Not used if water system is main or secondary system. Hot water cylinder? Category of heating system for the secondary heating system. Source of secondary heating system data; only if secondary heating system. Type of secondary heating present in the property; only if required and if heating data source is SAP table. The type of fuel used to power the secondary heating e.g. Gas, Electricity; only if required. Secondary heater efficiency; only if secondary efficiency is manufacturer declaration. Secondary heater make and model (text); only if secondary efficiency is manufacturer declaration. Secondary heater BS test method, e.g. BS EN 13278; only if secondary efficiency is manufacturer declaration. Secondary flue type; only if secondary efficiency is manufacturer declaration and if there is a flue. The type of thermal store; not used if main heating system is community heating scheme. Fixed air conditioning? The type of immersion heating; only if immersion. Heat pump assisted by immersion? Only if main heating is heat pump and water heating from heat pump. Immersion for summer use? Only if main heating is solid fuel fire or room heater with boiler. Secondary heating appliance is HETAS approved? Only if solid fuel. Hot water store size in litres; if there is a hot water store. Store refers to hot water store type which can be cylinder (if thermal store is "none"), hot-water only thermal store or integrated thermal store. Not applicable if (a) combi boiler whose data source database or (b) instantaneous combi boiler or (c) combi boiler from SAP table or (d) instantaneous water heater. Used when a heat pump is associated with a separate and specified hot water vessel. The source of the hot water store heat loss information; if there is a hot water store. Not applicable if (a) combi boiler whose data source database or (b) instantaneous combi boiler or (c) combi boiler from SAP table or (d) instantaneous water heater. Hot water store declared loss in kWh/day; only if there is a hot water store and if manufacturer declared loss. Not applicable if (a) combi boiler whose data source database or (b) instantaneous combi boiler or (c) combi boiler from SAP table or (d) instantaneous water heater. Hot water store insulation; only if there is a hot water store and if loss from SAP table. Not applicable if (a) combi boiler whose data source database or (b) instantaneous combi boiler or (c) combi boiler from SAP table or (d) instantaneous water heater. Hot water store insulation thickness in mm; only if there is a hot water store and if loss from SAP table. Not applicable if (a) combi boiler whose data source database or (b) instantaneous combi boiler or (c) combi boiler from SAP table or (d) instantaneous water heater. Thermal store connected to boiler by no more than 1.5 m of insulated pipework? Only if thermal store. Not applicable if combi boiler or instantaneous water heater. Thermal store or CPSU in airing cupboard? Only if (a) boiler with integrated or hot-water-only thermal store, or (b) main heating is CPSU. Primary pipework insulated? Not applicable if combi boiler or instantaneous water heater. Hot water cylinder thermostat? Not applicable if combi boiler or instantaneous water heater. Hot water cylinder in heated space? Not applicable if combi boiler or instantaneous water heater. Hot water separately timed? Not applicable if combi boiler or instantaneous water heater. Passive Flue Gas Heat Recovery Device (PFGHRD)? PFGHRD index number; only if PFGHRD. Solar panel? Panel aperture area in square metres; only if solar panel. The type of solar panel collector; only if solar panel. The source of solar panel collector data; only if solar panel. Collector zero-loss efficiency; only if solar panel and declared values. Collector heat loss rate; only if solar panel and declared values. Collector orientation; only if solar panel. Collector pitch; only if solar panel. Collector overshading; only if solar panel. Solar powered pump? Only if solar panel. Combined cylinder? If combined cylinder the hot water cylinder size is inclusive of the dedicated solar volume. Dedicated solar store volume in litres; only if solar panel. Waste Water Heat Recovery System. WWHRS-1 index number; only if WWHRS. WWHRS-2 index number; only if WWHRS. Energy saved or generated in kWh/year. Energy used in kWh/year. For Appendix Q procedure that provides air change rates. Only one Special Feature can have data on air change rates. Data set includes either class or EER, not both. Energy Efficiency Ratio. Data set includes either class or EER, not both. Identifies the main heating as system 1 or system 2. System 1 must always be present, system 2 is included only when there are two systems. Category of heating system for the main heating system. Source of main heating system data. The ID of the heating system from the product database, if system from database. Use for all relevant systems, not only boilers e.g. micro-CHP, heat pump. Main heating make and model (text); if main heating data is manufacturer declaration. Main heater BS test method, e.g. BS EN 13278; only if main heating data source is manufacturer declaration and it is a room heater. Main heating efficiency, to be used if main heating data is manufacturer declaration and Efficiency-Type is not winter and summer. Is the boiler a condensing boiler? If boiler efficiency is manufacturer declaration. Boiler type; if boiler efficiency is manufacturer declaration and fuel is gas or oil. Combi boiler type; if it is a combi boiler and boiler efficiency is manufacturer declaration. Case heat emission at full load in kW; if it is a range cooker boiler and boiler efficiency is manufacturer declaration. Heat transfer to water at full load in kW; if it is a range cooker boiler and boiler efficiency is manufacturer declaration. Boiler type; if boiler efficiency is manufacturer declaration and fuel is solid. Main heating code; when heating data source is SAP table. The type of fuel used to power the central heating e.g. Gas, Electricity; not used if main heating system is community heating scheme. Type of Main Control for the Heating System. Identifies the means by which the central heating system (if present) emits heat; only when wet system (radiators or underfloor). Means by which an underfloor heating system (if present) emits heat; only when wet system (underfloor). The type of main heating flue; only if flued appliance. Indicates whether the heating system contains a fan flue; only if boiler. Central heating pump in heated space? Only when wet system (radiators or underfloor). Oil pump in heated space? Only if oil boiler. Interlocked system? Only when wet system (radiators or underfloor). Delayed start thermostat? This is for backwards compatibility only. If possible use Load-Or-Weather-Compensation instead The type of boiler fuel feed; only if solid fuel boiler with manufacturer declaration. Main heating appliance is HETAS approved? Only if solid fuel. Electric CPSU operating temperature in Celcius; only if main heating is electric CPSU. Has load or weather compensation? Fraction of main heating provided by this system, is 1 if only one main system. To be used if main heating data is manufacturer declaration and Efficiency-Type is winter and summer. To be used if main heating data is manufacturer declaration and Efficiency-Type is winter and summer. Flue Gas Heat Recovery System. FGHRS index number; only if FGHRS. Fraction of heat for the system provided by this heat source. Air change rate in month. Peak kW of photovoltaics (PVs) (kWp); 0.0 if none. PV orientation; only if peak kWp > 0. PV pitch; only if peak kWp > 0. PV overshading; only if peak kWp > 0.