We have a modern condensing boiler.
It is a Worcester-Bosch Greenstar 30si model, with a rated efficency of 90.1%.
Our previous boiler (a late '80s Glow-worm model) had an efficiency of just 68%.
As things these days have an energy rating, our current boiler is rated as an "A" (the best), while our pevious boiler was rated as a "G" (the worst).
So, what does it mean?
Well, moving from an effiency of 68% to 90% means the boiler will use about one-third LESS FUEL, while still providing the SAME HEAT OUTPUT.
How is such an improvement possible?
Is the technology that much different?
Yes, it is.
A condensing boiler uses waste heat from the combustion to pre-heat the incoming water.
The heat-exchanger inside the boiler also has to be made of a more expensive corrosion-resistant material, due to the mildly corrosive nature of the condensed waste liquid inside the boiler, which is then drained off.
Read more about it here.
Of course, since the boiler is modern, it is also available with modern heating controls - so we got a wireless remote thermostat.
It is great, because you can put it where you want, and if you want to be sure that one part of the house has a particular temperature, then just put the thermostat there!
(in the picture, we are regulating the temperature of our house to keep our hamster warm! Of course, we also have TRV valves on our radiators)
So there you have it.
The same amount of heat, but from a third less gas.
That's good for my wallet, and, if not entirely good, is at least less bad for the planet!
Every little helps!
 |
| Our boiler hangs on the wall in our kitchen. |
It is a Worcester-Bosch Greenstar 30si model, with a rated efficency of 90.1%.
Our previous boiler (a late '80s Glow-worm model) had an efficiency of just 68%.
As things these days have an energy rating, our current boiler is rated as an "A" (the best), while our pevious boiler was rated as a "G" (the worst).
So, what does it mean?
Well, moving from an effiency of 68% to 90% means the boiler will use about one-third LESS FUEL, while still providing the SAME HEAT OUTPUT.
How is such an improvement possible?
Is the technology that much different?
Yes, it is.
A condensing boiler uses waste heat from the combustion to pre-heat the incoming water.
The heat-exchanger inside the boiler also has to be made of a more expensive corrosion-resistant material, due to the mildly corrosive nature of the condensed waste liquid inside the boiler, which is then drained off.
Read more about it here.
Of course, since the boiler is modern, it is also available with modern heating controls - so we got a wireless remote thermostat.
It is great, because you can put it where you want, and if you want to be sure that one part of the house has a particular temperature, then just put the thermostat there!
(in the picture, we are regulating the temperature of our house to keep our hamster warm! Of course, we also have TRV valves on our radiators)
 |
| The boiler has a snazzy little remore thermostat. Here we are using it to keep our hamster warm enough. |
The same amount of heat, but from a third less gas.
That's good for my wallet, and, if not entirely good, is at least less bad for the planet!
Every little helps!
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