8,350 Btu/h
Design heating load
Whole house at 20 °F outdoor · calculated
Back to IsothermFOUNDER-BUILT HOUSE
1,400 ft² · all-electric · Grand Junction, CO · Climate Zone 5B
Michal is building the entire house. It inspired Isotherm and provides a full-scale application of the workflow.
8,350 Btu/h
Whole house at 20 °F outdoor · calculated
R-26.1 effective
2×6 + ZIP R-9 · 22% framing · calculated
R-105.5 effective
5 in ccSPF + 19 in cellulose · parallel path
ANNUAL SOLAR EXPOSURE · MODEL OUTPUT
180 ft² south glazing · Hourly · full year · Geometry from building plans

HOURLY INDOOR, SLAB, AND OUTDOOR TEMPERATURES
A five-day free-float run shows how the house responds when the heating system is off. The slab surface and indoor air are plotted against the outdoor temperature on one time axis.
