Residential Energy Dynamics (RED) offers innovative software solutions for energy professionals through free building science calculation tools called RED Calc.
RED’s mission is to provide the best software tools and information available so that residential energy-efficiency professionals can maximize the effectiveness of their work. RED wants to make buildings healthier and less costly places to live, while helping protect the environment outside and inside of dwellings.
What are RED Calc Free Tools?
RED Calc are free online tools for building diagnostics that cover topics on ventilation, moisture, air leakage, insulation, and domestic hot water systems.
Here is a listing of the RED Calc Free Tools that are currently available:
This bundle of tools includes all you need for your ventilation design and analysis. The Department of Energy (DOE), the Building Performance Institute (BPI), and RESNET are requiring design and analysis of residential ventilation systems. These ventilation tools will help you get your work done fast, accurately, and with professionalism.
This bundle includes tools for determining natural air leakage (infiltration) rates and the resulting sensible heat loss or gain. The dependency on building leakage, building height, flues, leakage distribution, sheltering, terrain, and weather conditions can be explored. The calculations use the same, powerful infiltration model, AIM-2, that was used to calculate the weather and shielding factors for the ASHRAE 62.2-2013 ventilation standard. These tools are a part of our ongoing work to bring the wealth of knowledge and capabilities that exists in our national labs to our users.
These tools report and analyze weather data. Often it is useful to use these tools with other RED Calc tools. For example, it is useful to use the Weather Station Data (TMY) tool to find your closest weather station before using the ASHRAE 62.2-2013 Ventilation tool.