DOCUMENT
Building Energy Codes Program Glossary
363 definitions by U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy

Above-Grade WallAbove-Grade WallsAdditionAdopting AuthorityAir BalancingAir EconomizerAir Economizer SystemsAlterationAnnual Fuel Utilization Efficiency (AFUE)Application Part-Load Value (APLV)Attic and Other RoofsAuthority Having JurisdictionAutomaticAutomatic Control DeviceAutomatic Time-Switch ControlsAuto Operated Control DamperBallastBasement WallBelow-Grade WallBelow-Grade WallsBoilerBranch CircuitBritish Thermal Unit (BTU)BTO Peer ReviewsBudget Building DesignBuildingBuilding EntranceBuilding EnvelopeBuilding Envelope InteriorBuilding ExitBuilding Grounds LightingBuilding Information Model (BIM)Building MaterialsBuilding OfficialCavity InsulationCavity InsulationCeilingCeilingCheck MeteringCheck MeteringCircuit BreakerCircuit BreakerCirculating Water HeaterCirculating Water HeaterCirculation PumpsCirculation PumpsClass of ConstructionClass of ConstructionClerestoryClerestoryCoefficient of Performance (COP)Coefficient of Performance (COP)Color TemperatureColor TemperatureCommercial BuildingCommercial BuildingCompact FlourescentsCompact FlourescentsCompact Fluorescent LampCompact Fluorescent LampConcrete Masonry Unit WallsConcrete Masonry Unit WallsCondensing UnitCondensing UnitConditioned Floor AreaConditioned Floor AreaConditioned SpaceConditioned SpaceConnected Lighting LoadConnected Lighting LoadConstructionConstructionConstruction DocumentsConstruction DocumentsContinuous Insulation (CI)Continuous Insulation (CI)ControlControlControl DeviceControl DeviceCool DownCool DownCooled SpaceCooled SpaceCooling Degree DaysCooling Degree DaysCooling Design TemperatureCooling Design TemperatureCooling Design Wet-Bulb TemperatureCooling Design Wet-Bulb TemperatureCOP CoolingCOP CoolingCOP HeatingCOP HeatingCrawlspace WallCrawlspace WallCritical Demand PeriodCritical Demand PeriodCubic Feet Per Minute (CFM)Cubic Feet Per Minute (CFM)Current TransformersCurrent TransformersDaylight GlazingDeadbandDecorative LightingDegree Day Base 50FDemandDesign ADesign BDesign CapacityDesign ConditionsDesign EDesign Energy CostDesign ProfessionalDirect Digital Control (DDC)DisconnectDistribution SystemDoorDoor AreaDry-Type TransformerDuctDuct FurnaceDuct SystemDwelling UnitEconomizerEfficacyEfficiencyEfficiency Exchange 2015Electric MeterElectric ResistanceElectric SupplierElectronic High Frequency BallastsEmergency Power System (EPS)EmittanceEnclosed SpaceEnclosureEnergyEnergy Cost BudgetEnergy Efficient Ratio (EER)Energy Factor (EF)Energy Performance RatingEnvelope ComponentsEnvelope FloorEquipmentEquipment EfficiencyExfiltrationExisting BuildingExisting EquipmentExisting SystemExterior Lighting Power AllowanceExterior WallFacade AreaFan CoilFan System Energy DemandFeeder ConductorsFenestrationFenestration AreaF-FactorFixtureFloorFlue DamperFluorescent LampsFossil FuelFuelFuel Fired FurnaceGeneral LightingGenerally Accepted Engineering StandardGeneral Service LampGlazed Wall SystemGlazingGlazing AreaGlazing U-FactorGradeGross Floor AreaGross Wall AreaGross Window AreaGroup R-2 Residential BuildingGroup R-4 Residential BuildingGutterHarmonicsHeat CapacityHeated SlabHeated SpaceHeating Degree Day Base 65FHeating Degree Days (HDD)Heating Seasonal Performance Factor (HSPF)Heat PumpHeat TraceHeat TrapsHigh-Intensity Discharge Lamp (HID lamp)High-Rise Residential BuildingHistoricHot Water Supply BoilerHumidistatHVAC SystemHVAC ZoneHydronic BalancingIncandescent LampIndirectly Conditioned SpaceInfiltrationInstalled Interior Lighting PowerInsulated SheathingInsulation R-ValuesIntegrated-Control EconomizersIntegrated Part Load Value (IPLV)Interior Lighting ControlsInterior Lighting Power AllowanceInterior WallsInternational Energy Conservation Code (IECC)International Foundation Class (IFC)Isolation DevicesKilovolt-Ampere (KVA)Kilowatt (kW)LabeledLampLighting Power Density (LPD)Lighting SystemLiquid-Immersed TransformerListedLongitudinal SeamLow-Rise ResidentialLow Voltage LightingLuminaireManual (Nonautomatic)Marked (Nameplate) RatingMean TemperatureMechanical CoolingMechanical SystemMetal BuildingMetal Building RoofMetal Building WallMetal Halide LampsMeteringModel Energy Code (MEC)Motor Power RatedMulti-FamilyNet Wall AreaNon-Recirculating SystemNon-Renewable EnergyNon-ResidentialNon-Standard Part-Load Value (NPLV)North-OrientedOccupancy TypeOccupant Sensing DeviceOccupant SensorOpaqueOpaque AreasOperational Performance RequirementsOptimum Start ControlsOrientationOutdoor AirOvercurrentOverhead Glazing AreaPackaged BoilerPackaged Terminal Air Conditioner (PTAC)Packaged Terminal Heat Pump (PTHP)Party WallPerformance ApproachPermanantly Wired LuminairesPermanently InstalledPerm RatingPhoto CellPlenumPoolPositive Cooling SupplyPositive Heat SupplyPower FactorPrescriptive ApproachPrimary Air SystemProcess EnergyProcess LoadProjection Factor (PF)Proposed DesignPump System Energy Demand (Pump System Power)Radiant Heating SystemRaised TrussRated Lamp WattageReadily AccessibleRecirculating SystemRecoolingRecord DrawingsReflectanceReflector LampReheatingResetResidentialRoofRoof AssemblyRoofing with Insulation Entirely Above DeckRoom Air ConditionerRoom Cavity RatioScrew Lamp HoldersSeasonal Coefficient of Performance (Cooling)Seasonal Coefficient of Performance (Heating)Seasonal Energy Efficiency Ratio (SEER)Semiheated SpaceService AgencyService EquipmentService Water HeatingSetbackSet PointShading Coefficient (SC)Simulation ProgramSingle FamilySingle-Rafter RoofSingle-Zone SystemSingle-Zone UnitsSite-Recovered EnergySite-Solar EnergySkylightSkylight WellSlab EdgeSlab-On-Grade FloorSlab on Grade Floor InsulationSolar Energy SourceSolar Heat Gain Coefficient (SHGC)SpaceSplit SystemStandard TrussSteel-Framed WallStorySubstantial ContactSwitched ReceptaclesSystemTandem WiringTemperature Reset ControllersThermal BlockThermal BridgeThermal Resistance (R)ThermostatThermostat SetbackTintedTrade-Off ApproachTransformerTransverse SeamUAUL 181A/BUnconditioned SpaceUnenclosed SpaceUnitary Cooling EquipmentUnitary Heating and CoolingUnitary Heat PumpUnitary PackagedUnit Energy CostsVapor RetarderVariable Air Volume (VAV)Variable Frequency DriveVent DamperVentilated MechanicallyVentilated NaturallyVentilationVentilation AirVertical FenestrationVisible Light Transmittance (VLT)Voltage DropWallWarm-UpWater EconomizerWater HeaterWater HeatingWindowWindow Projection FactorWindow-Wall Ratio
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