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  • Off-site construction refers to the planning, design, fabrication, and assembly of building elements at a location other than their final installed location to support the rapid and efficient construction of a permanent structure. Such building elements may be prefabricated in a different(...)
  • A system which combines exterior insulation and some type of stucco cladding for buildings. Based on rain control strategy, there are two types of EIFS available in the U.S.—perfect barrier face-sealed systems and drained systems. Source: BSD-146: EIFS—Problems and Solutions, RR-0406: Face(...)
  • Energy is a measurable quantity of heat, work, or light. Potential energy is stored energy, like a cord of wood. Kinetic energy is transitional energy, like a flame. Source: Residential Energy
  • An energy audit is an assessment of the insulation, building structure, heating and hot water systems and electrical use. It is a practical way to protect your biggest asset, save money and live healthier. Our approach to auditing is based on the House as a System concept, balancing air(...)
  • The measure of a building energy efficiency.
  • The Environmental Protection Agency, in cooperation with the Department of Energy, has created a brand that identifies the most energy-efficient products on the American market. Source: Residential Energy
  • The Passivhaus Institut's energy performance standard for retrofits. It allows a maximum annual [specific] space heated demand of 25kWh/m^2.a and an upper airtightness limit of 1.0ACH, if the 0.6ACH target can be shown to be impracticable, and also sets requirements for individual elements of(...)
  • Thermodynamic quantity equal to the sum of the internal energy of a system plus the product of the pressure-volume work done on the system. Enthalpy cannot be directly measured; however, enthalpy differences between the initial and the final state points of a process can be(...)
  • Exchanges the energy contained in air exhausted from a building and uses this to heat or cool the building’s incoming outdoor ventilation air. Source: Zehnder Passive House Blog
  • Energy Use Intensity (EUI) is a measure of a building’s energy use as a function of its size.  It’s calculated by dividing the total energy consumed by the building in one year (measured in kBtu or GJ) by the total gross floor area of the building.