# Natural gas boiler Vs. Electric Heater efficiency

If a facility buys natural gas at 8 dollars/Mcf to provide heating from an 85% efficient natural gas boiler, what is the equivalent cost of electricity (\$/kWh) for a 95% efficient electric heater?

I'm not sure how to relate these. What equations can I use? Where do I begin?

• start by comparing the power ratings of each... – Solar Mike Sep 16 '17 at 21:53
• Figure out how many kWh (1 kWh = 3600 kJ as there are 3600 s/hour) there are in an Mcf - whatever that is. Go metric, man, for your own sanity. – Transistor Sep 16 '17 at 23:41
• @Transistor: I totally agree with you, Mcf '1000 cubic feet, a unit of measure in the oil and gas industry for natural gas, more often written Mcf (M from the Roman numeral for 1000); sometimes MCF stands for 1,000,000 cubic feet instead (M for "million" or the metric prefix for million, "mega")'. A factor of 1000 is a large difference when people can't get their capitalization right, as sometimes happens on this site. In this case think it's 1000 cubic feet. The metric system is so straight forward by comparison. – Fred Sep 17 '17 at 1:58

I answered a similar question on SE Sustainable Living recently.