Discuss Condensing Boiler in the USA area at PlumbersForums.net
Grant EuroflameYou say you installed it, is this a DIY install? Different makes of boilers have different overall efficiencies, however a modern condensing oil boiler will be around 10% more efficient, however that largely relies on the system design as well.
What brand of boiler is it?
Should be able to get that 10% without trying too hard, My SE (non condensing) firebird has a flue gas temperature of ~ 330C, if I installed a condensing which I prefer to call High Efficiency (HE) boiler as they rarely condense but because of the extra heat exchanger then I would expect a flue gas temp of ~ 100C and as each 100C lower temperature results I think in around 4.5% saving then 10.5% in this case. You can obviously get lower but I think Grant specify 40/45C minimum boiler return temperature so maybe just able to achieve a little condensing benefit as the flue gases will probably be 10C higher at around 55/60C.
SJB or exedon2 might post flue gas temperatures on SE & HW oil fired boilers that they serviced.
Reply to Condensing Boiler in the USA area at PlumbersForums.net