Type 21 convector radiators feature 2 panels which encase a single layer of fins. An easy way to remember the numbering system is the first number represents panels and the second number represents fins. Type 22, by using the same logic would mean 2 panels and 2 layers of fins. To help remember this further it is best to say 'type two, one' rather than 'type twenty one' and 'type two, two' rather than 'type twenty two'. As you can imagine more is always better so Type 22 radiators typically generate much more heat than Type 21 radiators.
This is down to the additional layer of fins inside. Below is a drawing to show you the 2 rows of fins bounded between the two panels of a type 22 radiator. More fins inside means there's more space required to store them. A Type 22 radiator is therefore generally wider than a Type 21 radiator. A typical Type 21 radiator will have a depth of about 70mm whereas similar designed Type 22 radiators will be around mm. Below is a drawing to show you the single row of fins sandwiched between the two panels of a Type 21 radiator.
To add to the confusion, you may have seen certain radiators being referred to as double panel plus radiators.
However, this is simply just another name for Type 21 radiators. Double panel plus radiators are your standard two-panel radiators, boasting a single set of fins. There are other types of convector radiators around which are less common than Type 21 and 22, these are Type 11 also referred to as K1 and Type 33 radiators. Type 11 is a single panel radiator with a single layer of fins. It's looks very similar to Type 21 convector radiators but has no back panel which is usually hidden from sight.
Below is a drawing to show you the single row of fins fixed to the single panel of a Type 11 radiator. Type 33 convector radiators combine a Type 22 radiator and a Type 11 radiator to create the ultimate in heat output. Type 33 radiators have 3 panels encasing 3 layers of fins. Below is a drawing to show you the 3 rows of fins bounded between the three panels of a type 33 radiator.
Maintaining your radiators with regular bleeds as well as checking for any corrosion will keep your heating system in check. Head over to our bleeding guide to find out more about bleeding your radiators. Ensuring there are no blockages in your radiator will lead to less energy being used to produce heat in your home. A powerflush is carried out by professionals and involves cleaning out your central heating system of any sludge and debris that has built up over a few years. It's worth doing as your boiler could be working harder than it needs to be and you will find that your home will be heated more efficiently after.
Powerflushes are a more complicated procedure and normally cost a few hundred pounds. You should be aware that older radiators may not be able to handle the intense pressure and flow of water from the powerflush, which could eventually cause them to leak.
Post-powerflush, your engineer may recommend a replacement magnetic filter or install one to slow the debris and sludge build-up. They will also add anti-corrosion fluid to the now clean water to prevent rust or corrosion forming on any pipework. For more information on how a powerflush works, click here. Manual valve — The manual valve is the easiest to use out of all other types of valves. Manual valves tend to be a lot smaller than TRVs, as well as a lot simpler.
TRV - Thermostatic Valves also known as TRVs , are similar in design to manual valves with the key difference being that they feature a temperature sensor. Therefore, a TRV will give you the basic control necessary to start saving energy.
Lockshield valve - Lockshield valves are supplied with your valve purchase to regular the flow of water leaving your radiator. This type of valve is used to balance your system, and ensures that all your radiators heat up at the same rate.
So, when you do purchase a pair of valves, one of them will be a lockshield. If you'd like to find out more about radiator valves, check out our guide here.
Share Email Whatsapp Twitter Facebook. Types of radiators As far as types of radiators are concerned, you typically have the choice between your everyday common radiators or a convector radiator if you need help choosing a radiator, check out our guide here. Low cost boiler repairs by expert engineers. If a radiator is built from cast iron, it will take a lot longer to heat up and ages to cool down. Mild steel is the most common material used for radiators nationwide.
Mild steel is the middle ground between other radiator materials since it heats and cools at a steady pace. Stainless steel radiators are more expensive and offer better quality than the other types of radiators mentioned here. For conservatories or small rooms where the only place to fit a radiator is underneath a window, the Versatile Convector is a small, but hugely efficient, double panel radiator. And if you really want to make a designer splash, try the Oslo radiator. Garden offices are perfect for the self-employed or for employees whose companies have adopted remote or hybrid working practices.
The importance of the outdoors and nature has become abundantly clear to us during the lockdowns. Having a connection with As we look forward to the long, hot hopefully summer days, the last thing on our minds will be radiators Smart technology is helping us control our homes at a more granular level than ever before.
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