In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Oil to Gas Conversion Efficiency
We've just had our oil boiler converted to gas (Wayne P265F Combustion burner) and the efficiency of the boiler has now dropped from 82/83% to 78.7%. My understanding is that the efficiency should stay the same or possibly even increase. I am wrong about this and, if not, where does the fault for this drop in efficiency lie - the burner, the boiler (5 years old) or the person doing the install.
Any help would be gratefully appreciated.