My HVAC company suggested installing a (electric) heat pump as an additional heat source to cut down my astronomical oil heating cost. Oil heat would still be used as a backup, when outside temperature goes too low (Note I live in New England area). My questions are: 1) Are electric heat pumps effective in this region? (2) At what outside temperature they start to become ineffective source for heating?
(Note I have to replace my current outside AC unit (used for cooling the indoors) anyways due to some other issue, and I am thinking of replacing with heat pump if it is worth it)
thanks in advance for your help