When selecting new radiators the first consideration to be made is probably the size.
Of course you want to choose a fantastic style and you want to be certain they will look good in any room you choose but it is advisable to measure each area, this way you can calculate the output that is required for each space, allowing your heating system to be fully optimised for your home.
The actual output of the radiator is measured in BTU’s. These are British Thermal Units and the higher the BTU of a radiator, the more heat that is generated. Calculating the BTU rating for your home is not a daunting task and can be relatively simple indeed. Basically rooms that have more windows and doors in place will require radiators with higher BTU ratings and with smaller rooms you can choose radiators with lower BTU ratings.
The actual positioning of the radiators is also important for overall efficiency of heat distribution around the room. Placing the radiator in the coldest part of the room or even below a window is beneficial given that the cold air actually drives the heat around the room. Consulting your plumber or gas safe registered engineer before any installation takes place is advisable because they can calculate any BTU ratings for each room and can also advise what radiators will work best in conjunction with the rest of the central heating system.
Of course the BTU rating provides a great average for what you need to heat the room, but other factors would need to be considered such as any extra insulation, heat loss from windows or the actual positioning of the room. It is best to plan all this before the actual installation work takes place because you don’t want to find yourself purchasing brand new radiators that will not actually be capable of heating the household effectively and efficiently.