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AIM: Web-Based, Residential Energy Calculator for Homeowners
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This paper discusses AIM, or Assess, Improve, Measure. AIM is an energy efficiency calculator for existing residences that has been developed to provide homeowners, realtors and builders with a method to rate the energy efficiency of an existing house using a minimum number of inputs. To accomplish this, AIM uses DOE-2 loads simulations and a simplified systems model. To simplify the use of the calculator, parameters such as window U-factor, roof and wall insulation, which are normally required for simulations in existing homes, are automatically provided using statistical tables. This allows homeowners to use the calculator with information commonly available during a real estate transaction.
SubjectAssess, Improve, Measure (AIM)
Energy Efficiency Calculator
DOE-2 Loads Simulations
- Published Articles 
Marshall, K.; Moss, M.; Liu, B.; Culp, C.; Haberl, J.; Herbert, C. (2010). AIM: Web-Based, Residential Energy Calculator for Homeowners. IBPSA-USA (http://www.ibpsa.us). Available electronically from