Psychrometrics - On-line Psychrometric and Thermodynamic properties of moist air
Cooling Coil - On-line psychrometrics of a cooling coil.
UAC Cost - On-line Unitary Air Conditioner energy and cost savings esitmator
Compliance - On-line versions of REScheck and COMcheck code compliance tools
Sheetmetal - Free metal weight estimator
Life Cycle - NIST software for analysis of capital investments in buildings.
Energy Plus - Building energy simulation for heating, cooling, lighting, ventilating and other energy flows
Energy Decision - A software tool to identify energy improvements
FRESA - Federal Renewable Energy Screening Assistant to evaluate renewable energy opportunities and energy system options
Lighting - Federal Lighting Energy Expert (FLEX) for evaluation of lighting retrofit projects
Watergy - A spreadsheet model using water/energy relationship assumptions to analyze the potential of water savings and associated energy savings
BEES - Building for Environmental and Economic Sustainability. Aids in selection of cost-effective, environmentally-preferable building products
Fire Research - This is a list of fire modeling programs from the NIST Fire Research Center
REScheck - Residential compliance with the MEC, IECC, and several state codes
COMcheck - Commercial and high-rise residential energy code compliance
Software page and other tools
Directory - A subject directory of software tools to help researchers, designers, architects, engineers, builders, code officials, and others involved in the building life-cycle to evaluate and rank potential energy-efficiency technologies and renewable energy strategies in new or existing buildings.