Heat pumps in New Mexico have never been very popular due to the drop in efficiency below 30 degrees. The technology has changed things and these systems are effective to -15. Heat pumps can be thought of as refrigerated air conditioning in reverse. It doesn't make sense but these units pull heat from outside and tranfer it inside, even when outside temps are below zero
The Northeast Energy Efficiency Partnerships found that the annual savings when using a heat pump are around 3,000 kWh (or $459) when compared to electric resistance heaters, and 6,200 kWh (or $948) when compared to oil systems. When displacing oil (i.e., the oil system remains, but operates less frequently), the average annual savings are near 3,000 kWh (or about $300).
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