If electric heating is your option, a heat pump definately is the way to go, providing 3 to 4 even more times the BTU's of heat per Watt used as compared to resistive heat strip type heaters which are 100% efficient and provide 3.45 BTU's per Watt used.
I moderate climates and cold temps of 40F and above heat pumps work great!
below 40F the efficiency drops off rapidly, as does output capacity.
Coal is used as Utah's primary source for electricity while natural gas is the state's primary source for heating fuel.
intrest energy
intrest energy
This is true, and also for heating the earth's surface and the oceans. The only other source is the heat from the centre of the earth. Man-made activities are small by comparison.
Approximately 5.5 million households in the United States use heating oil as a primary heating fuel source.
Aristotle's work on politics would be considered a primary source since he is the original author of the information. It provides firsthand accounts and interpretations of political theories and systems during his time.
It is a primary source.
In richer countries it is usually electricity or fossil fuels. In poorer countries it is usually wood.
A picture can indeed be a primary source.
it is a primary source
It is a primary source because it was taken at the time.
Primary