boiler [Noun] + energy-efficient [Adjective]

Strength Strength Dispersion
A:
5
CHISQ:
7,534.24
AWT:
21,337,921
TTEST:
2.23
G2:
78.35
FAWT:
2.55
MI:
10.56
LOGLOG:
24.52
JD:
0.34
MI3:
15.2
DICE:
1.1
RANGE: