Compare insulation heat savings and a separate surface dew-point estimate.
1
Enter area, U-values, degree days and energy costs
2
Add air humidity and an independent surface temperature
3
Calculate, compare scenarios and export
Insulation savings and surface dew point
Insulation savings and surface dew point
Compare annual heat loss before and after insulation, simple payback and cumulative savings. Separately compare a surface temperature with the air dew point.
Insulation savings and surface dew point
Compare annual heat loss before and after insulation, simple payback and cumulative savings. Separately compare a surface temperature with the air dew point.
Heat loss = U-value × area × heating degree days × 24 / 1000. Purchased-energy saving divides the heat saving by the entered heating performance ratio. Dew point uses the Magnus approximation.
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