Home heat & energy tools that show their math
Practical calculators for homeowners and renters, built on the same heat-transfer physics engineers use. Live weather data, honest assumptions, and a published methodology for every tool.
Tools
Will My Pipes Freeze Tonight?
Enter your ZIP code and where the pipe runs. We pull the hourly NWS forecast and model how fast the water in the pipe cools and freezes.
Open tool
Why HeatFluxHome?
Physics, not guesswork
Every result comes from a heat-transfer model — conduction, convection and phase change — with material data from standard engineering references.
Live local weather
Tools that depend on the weather use the hourly forecast from the US National Weather Service for your ZIP code.
Private by design
Calculations run in your browser. We don't ask for an account and we don't store what you enter.