energy efficiency in the home Flashcards
1
Q
what is U-value?
A
how effective a material is as an insulator/at keeping energy in
2
Q
would heat travel faster through materials with higher or lower U-values?
A
higher u-values, so the better the insulator, the lower the u-value
3
Q
how do you calculate payback time?
A
initial cost / annual saving
