Originally Posted by
Webby737
I had a friend of mine that ran his central heating system on A1 for years, he never had a problem. He did mention that it seemed to burn a little hotter but also cleaner.
Domestic fuel oil vs Jet A1
Density: 0.820–0.860 kg/l vs 0.775.0–0.840 kg/l
Burning point: +55°C vs +38 °C
Auto ignition: +255°C vs +225°C
Energy density: 36,0 MJ/l vs 34.7 MJ/L
So yes, this is what I would expect.
However the boiler might not like the higher temperatures. If it's rather old it should be good.