New Condensing boilers, the laymans guide
New Condensing boilers, the laymans guide
A condensing boiler is a efficient innovative boiler that contains an additional heat exchanger in order that the red-hot exhaust gases transfer a large proportion of their heat to start to heat the mains water to be heated. When functioning at a good efficiency, the water vapor produced in the combustion process distills back into water freeing the latent heat of vaporisation.
A consequence results in this water, named condensate, that is frequently acidic, needs to be piped outside to a drain or soakaway. The boiler will be mounted on a wall and the exhaust fumes will rise through the flue. Hot water is delivered by a little receptacle tank to enable convenient and rapid hot water accessibility.
Can you advise on the right boiler size?
You should bear in mind that when first fitted central heating engineers often put in boilers that had a higher yield than strictly necessary.. Whilst this meant that there was little probability of the boiler falling short on its requirements, even in the most polar of conditions, it also meant that they were only employing a part of their heat generation capabilities, and so running under their planned optimum efficiency. If you have insulated your home since the previous boiler was put in, it could well be that you will be able to fit a lower capacity boiler than before.
We certainly advocate you get advice from a CORGI installer before purchasing your next boiler
If I fit a condensing boiler should I fit large radiators?
The main efficiency benefit from a condensing boiler is that it has an oversize heat exchanger. More Prominent radiators would result in cooler return water temperatures, and so enable greater energy efficiency, but the further savings suffer from diminishing returns, as you need to remember that that the system is considerably under-loaded for the main heating months. That in all probability remains true, though the smaller heating demand for new build may well mean that homeowners would now allow over-sized radiators more willingly.
The SEDBUK initiative looked at this, during which it was debated whether condensing boilers demanded to be processed differently from others. The determination was that they need not, and the test results forthe condensing and the existing boilers employ the same SEDBUK equation.