Aluminium radiators

As the UK’s leading radiator specialist offering an array of aluminium radiators, Feature Radiators’ experts are often asked the following questions:

• What are the benefits of aluminium radiators?
• What is the difference between aluminium and steel or cast iron radiators?
• Is there anything I need to be aware of when buying aluminium radiators?

The benefits of using aluminium to make radiators

Aluminium’s physical properties make it a perfect material to construct a radiator from.  It offers the following positive characteristics:

• Recyclable – as aluminium can easily be re-worked, recycled aluminium is widely used in every day products including radiators;
• Inexpensive – using recycled aluminium keeps production costs down;
• Light-weight - this makes transportation and installation easier and, consequently, cheaper;
• Long guarantee periods – aluminium radiators come with guarantees of up to 10 years as this material has a protective film of surface oxide making it naturally resistant to corrosion, although, other inputs can cause a risk of corrosion.  See below for more information*;
• Quick to react or “thermally conductive” – aluminium ensures rapid heat transfer from the water within the radiator to the air in the room.  In practical terms this means that the radiators only need to be switched on just before the room is needed.  On the flip side, aluminium cools down equally quickly unlike cast iron which retains heat for hours.
• Variety of shapes and styles - aluminium is relatively soft, yet durable and has a high “ductile strength” meaning it can be stretched or “extruded” into long strips.  Therefore aluminium is often used in vertical radiator models and is commonly used for contemporary style “feature radiators”; and
• “Sectional” options - the “extrusion” process means that uniformly shaped sections can be formed and radiators can be of “sectional” construction.  A sectional aluminium radiator is assembled by joining any number of sections together to create the desired width; this allows for a vast selection of widths and means that radiators can be easily sized to fit onto existing pipework.  The same sectional construction method is used for cast iron and some steel radiators.  Scope for large radiators means that huge heat outputs can be achieved. 

Comparing aluminium to steel and cast iron

There is not one material that is better than the other; there are pros and cons for each.  Your choice will depend on your particular circumstances and specification.

• Price – there is a common misconception that the cost of a radiator is entirely dependent on the material it is made from but there are so many other factors at play. 
• Weight - Aluminium is light-weight whereas cast iron is heavy and steel sits somewhere between the two.
• Guarantee periods – aluminium radiators usually come with 10 year manufacturer’s guarantee but so do cast iron radiators.  Steel tend to come with less at 5 years as steel is more prone to corrosion, though if the radiator is installed and maintained properly, this should not be a problem. 
• Speed of reaction - aluminium heats up quickly, but then cools down quickly whereas cast iron takes longer to heat up, and retains the heat for longer after switch off.  Steel sits somewhere in the middle.
• Shapes and sizes - aluminium is relatively more ductile and malleable than steel and cast iron.   

*Prevention against corrosion

In order to comply with your radiator guarantee, your radiator must be installed in accordance with BS5449, section five commissioning, which is a process your installer should be fully aware of.  This means on completion of installation, the system should be properly flushed and filled to remove debris and minimize the presence of solid particles and chemical residue that may cause corrosion and damage within the system. 

Any radiator (except those on a secondary hot water system) must be used in conjunction with a suitable corrosion inhibitor. 

Corrosion inhibitor should be used in accordance with the manufacturer’s instructions and recommendations and should take into account the particular metals within the system.  Corrosion inhibitors are available from most plumbers’ merchants and DIY stores.

For more information on aluminium radiators, contact a radiator specialist such as Feature Radiators.  You can view over 250 models and receive expert advice at their showroom in Bingley, West Yorkshire or contact their sales team on 01274 567789 or through their website www.featureradiators.co.uk

Radiator Valves – angled, straight or corner - which ones do I need?

Feature Radiators, a radiator expert, has provided below some helpful advice on which valves they would recommend for different radiator set-ups, enabling you to make an informed decision when buying radiator valves.

 

1. Are your pipes already installed? 

You may be starting from scratch without any pipes installed; in this instance, you can probably choose where you want your pipes to come from (wall or floor).  This means you have freedom when it comes to choosing your radiator and valves.

However, as is often the case, you may already have your pipework installed.  You may be able to have this moved but, if not, this may narrow down your radiator and valve choices. 

2. “Wall-mounted” or “floor-mounted”?

A question we are often asked is whether a particular type of radiator can be “wall-mounted” or “floor-mounted”.  

• “Wall-mounted” means that the radiator is hung from the wall on brackets (without feet).  However there is a common misconception among homeowners that “wall-mounted” means that the pipes come out of the wall. 
• “Floor-mounted” means that the radiators are sat on the floor, usually on “feet”.  Again however customers often think that this means that the pipes come from the floor. 

Whether the radiator is hung from a wall or sat on feet, the pipes can come from wherever you need them to; out of the wall, out of the floor, along the skirting board, etc.  This position of your pipes does not affect your choice of radiator, but it does affect your choice of valve.

3. Position of valve connections?

In order to choose the best valves, you firstly need to know if your radiator has “side connections” or “underside connections”.

 

Side connections

The connections for the valves (holes) are situated at the bottom of the radiator on either side.  This is the norm for standard corrugated panel radiators and traditional style cast iron radiators.  This type of connection is also known as BBOE or Bottom Bottom Opposite Ends.

Underside connections

The connections for the valves (holes) are situated underneath the radiator, at either end or centrally at 50mm apart.  This is the norm for ladder style towel radiators and is common on many modern vertical radiators, which are designed to take up a minimum amount of wall space. 

 

4. Position of pipes?

Choose your particular set-up from the list below:

 

• Pipes coming up from the floor on a radiator with side connections = you need “angled” valves

The head of the valves would sit upright, either side of the radiator. 

 

• Pipes coming up from the floor on a radiator with underside connections = you need “straight” valves

The valves would sit underneath the radiator and the head of the valves can be twisted so they are in-line with the bottom of the radiator and do not protrude into the room.

• Pipes coming out of the wall on a radiator with side connections = you can choose from “angled” or “corner” valves

Traditionally installers would use angled valves, but this means that the valves would lie flat either side of the radiator and the valve heads would stick forward into the room usually beyond the front of the radiator.  A neater alternative is to use corner valves, which means that the valves would be either side of the radiator but the heads of the valves would sit upright, rather than protruding into the room.

• Pipes coming out of the wall on a radiator with underside connections = you can choose from “angled” or “corner” valves

Traditionally installers would use angled valves, but this means that the valves would sit underneath the radiator and the valve heads would stick forward into the room usually beyond the front of the radiator.  A neater alternative is to use corner valves, which means that the valves would sit underneath the radiator and the heads of the valves would sit horizontally, rather than protruding into the room.

 

Manual or thermostatic?

 

Remember, you also need to decide whether you need thermostatic or manual valves.  Please see our article regarding the differences via the link below.

http://www.featureradiators.co.uk/Articles/Radiator%20valves%20thermostatic%20or%20manual.htm