Utility bill unit (5)
I believe the answer is:
therm
(Other definitions for therm that I've seen before include "Gasman's unit" , "Former gas supply unit" , "Unit of heat energy" , "Indicator of heat" , "Unit of heat and gas measure" .)
I believe the answer is:
therm
(Other definitions for therm that I've seen before include "Gasman's unit" , "Former gas supply unit" , "Unit of heat energy" , "Indicator of heat" , "Unit of heat and gas measure" .)