My folks moved into a bungalow a year ago having lived in a large house for the previous 25 years. This bungalow is cavity and loft insulated and is heated by a potterton Profile 60EL (17.6Kw) non condensing boiler which is about 7 years old (? possibly less) via 8 rads. The boiler was serviced when they moved in and has apparently been running perfectly since.
They were recently surprised by their gas usage, as it compared with their old house, as they expected, for obvious reasons, that it would be less than their previous big old house. They run the heating/HW in a 'standard' kind of way ie the place is kept warm, not hot, on a twice-a-day programme, they use the shower twice at most each day, other hot water use is also standard.
The gas usage is, on average, about 11 units per day (high?). Assuming correct boiler operation could this high usage be down to the fact that the boiler is over rated for the property and is not able to modulate its power output down low enough for the requirements? ie it burns as much gas for low demand as it would if more heat was called for, getting rid of the unrequired extra heat out through the flue.
Would a lower capacity 13Kw condensing boiler make a significant difference?
Any thoughts much appreciated
They were recently surprised by their gas usage, as it compared with their old house, as they expected, for obvious reasons, that it would be less than their previous big old house. They run the heating/HW in a 'standard' kind of way ie the place is kept warm, not hot, on a twice-a-day programme, they use the shower twice at most each day, other hot water use is also standard.
The gas usage is, on average, about 11 units per day (high?). Assuming correct boiler operation could this high usage be down to the fact that the boiler is over rated for the property and is not able to modulate its power output down low enough for the requirements? ie it burns as much gas for low demand as it would if more heat was called for, getting rid of the unrequired extra heat out through the flue.
Would a lower capacity 13Kw condensing boiler make a significant difference?
Any thoughts much appreciated