You can look at the State of New Hampshire’s Dept of Energy comparisons here, updated weekly: https://www.energy.nh.gov/energy-information/nh-fuel-prices https

You can look at the State of New Hampshire’s Dept of Energy comparisons here, updated weekly: https://www.energy.nh.gov/energy-information/nh-fuel-prices https://www.energy.nh.gov/energy-information/nh-fuel-prices Actually right now #2 heating oil is now somewhat cheaper per MBTU than propane. Also Natural Gas is slightly cheaper than heat pump per MBTU (YMMV on efficiency!) I’ve never seen propane cheaper than heating oil here! EDIT: It’s probably worth pointing out that the North East of the US is the largest heating oil market in the world.