It is always a good idea to research central heating systems on the internet before you buy radiators online. There is much to think about and if you are just replacing your heating panels you need to know which valves and radiators will fit your current pipework.
There is many a good deal to be had when you shop online. Internet retailers do not have the overheads that shops have. They also achieve faster delivery times, especially if a particular line is currently in stock.
For more specialist radiators such as the designer styles there may be a waiting time of a few weeks. This is not surprising as the demand for these expensive heaters is not as great as the mass-produced, traditional models.
If you are researching which type of radiator is the most energy efficient, you need to realise that modern heaters are all efficient in their different ways. It just depends what goes with your décor and the size of your home.
The slim-line panel radiator will fit in any small space and they do not take up much room because they are installed close to the wall. If you have the room you could go for a long horizontal version. If this is not possible, then there are vertical styles available.
These radiators heat up quickly, but they also cool down just as fast. If you are in the market for a more traditional style, you will find cast iron radiators online. These complement any interior, but they look especially attractive and stylish in period properties.

Although cast iron heats up slowly, radiators made out of this metal do cool down more slowly too. This will keep your room warmer for longer. On the whole, although they all work in different ways, there is not much between them in efficiency.
A little known fact is that radiators with painted finishes have a better heating capacity than the plain metal styles. At the end of the day most people choose a particular style purely according to their preferences.