Energy Tools

RED Calc™ building science calculation tools help energy auditors and analysts become more productive and confident of their results.

Use the Building Science Advisor to test the moisture risk and thermal performance of wall assemblies with different types and configurations of insulation, sheathing, and cladding.

Find detailed roof, wall, foundation, and window drawings that provide envelope assembly options for building high-performance homes in every climate zone.

Discover projects for retrofitting your home within your budget and skill level.

Whether it's remodeling an area of your home or replacing an appliance, find resources to make cost-effective, energy-efficient decisions.

Find help with replacement sizing, system selection, and installation guidance.

Find the hybrid water heater that best fits your needs and the guidance to install and maintain it.