How Much Gas Does a Boiler Use Per Hour? | Viessmann
From 12 and 18kW, to 32 and 40kW, these figures show the maximum power the boiler is capable of producing each second. When were thinking about boilers, we can break it down quite simply: a 35kW boiler uses 35,000 watts (35 kW) of power per second to heat the water we need to
What Size Electric Boiler do I Need? | Boiler Guide
08/05/2012 · 48.1K posts You have an electric boiler which has an output of 12kW, this passes hot water to your CH circuit and hot water tank. If you start it from cold and it's running full bore throughout then it will use around 36 kWh in 3 hours-so 22 kWh's in 3 hours is perfectly reasonable.
Steam boilers are generally reliable and can run for 15 to 30 years or more but they need more maintenance and regular checkups than a gas furnace for example. Many steam boilers should be checked weekly to make sure the water is at the right level. Too much water wastes energy and too little water can weaken boiler parts due to overheating.
As a ball-park estimate, youll need the following power outputs for the number of radiators for a combi boiler: Up to 10 radiators: 2427 kW 10 to 15 radiators: 2834 kW
How much electricity does my boiler use