I live in the NE.. oil fired burner/steam heat I've tweaked my system, to get almost 86% efficiency and continue to tweak... its an uber low pressure system...
That means for every dollar I spend on fuel 14c is wasted... I've been tracking costs for a few years since I put a outdoor reset system on a steam boiler., which is not common
Anyway you can see the cost of fuel oil in the NE since 2016
