Frequently Asked Questions

Stock & Deliveries

Where should I position my radiators?


In new modern homes, radiator positioning is less important due to insulation and modern building regulations however please be sure to consult your plumber or heating engineer prior to purchase and installation of your radiator. In traditional homes, most radiators are best placed in the coldest part of the room - usually found under a window, as this allows for airflow and radiant air convection.

Large spaces are more effectively heated with 2 or more, smaller radiators rather than one large one.

A rule of the thumb often used in the trade is to have one radiator every four metres (about 15 feet) or so in the room. An alternative could be two tall thin radiators either side of the window or a long low radiator along the wall.




Should I choose horizontal or vertical?


Many of our designs are available in horizontal or vertical options, which one you choose depends on your available space and how you can maximize the use of the space without compromising or losing the required heat output.




What clearances do I need above and below my radiator to ensure maximum efficiency?


We recommend that clearances of 50mm above and 100mm below should be left clear so heat from the radiator can be effectively distributed.




Can I curve or bend radiators to fit into an existing bay window?


Some radiators can be curved or bent to fit a bay window, unfortunatly we do not supply these. if you require a curved radiator plese visit The Radiator Company who provides this type of radiator from their Ancona range, where they can curve the radiator to your specifications.





Choosing the right Radiator

How much heat do I need?


To establish how much heat your room needs, consult your Gas Safe registered installer or heating engineer. If you want to calculate it out yourself, visit our Heat Output Calculator.

All our radiators are shown with their heat outputs, so you can choose a radiator or several radiators whose outputs add up to the heat you require.

All our Designer Radiators and Towel Rails comply with EN442 legislation. And outputs listed are calculated in line with the European Testing Standards at Δt50°C (the latest standards for modern boiler systems).

To convert Δt50°C to Δt60°C simply multiply x 1.264

Compliant independent test certificates are available upon request.




How do I convert between BTUs and Watts?


To convert BTUs to Watts, divide your Btu by 3.412
To convert Watts to BTUs, multiply your Watts by 3.412




Do different Radiator designs affect output?


By altering the size, shape, number of tubes or columns in a radiator you can adjust the output achieved. For example, we have a huge variety of size and column options in our Cornel range that allow flexibility so that the right output can be achieved in your designated or limited space.




The radiator I want has not got enough output for my room, what can I do?


Depending on the range, you can select an alternative model or size, in addition with certain ranges you can select models with additional columns or radiators which are supplied in double rows of elements to increase output for the same space. You may need to consider adding another radiator to the room to make up any shortfall in required output.




What is the difference between Cast Iron, Steel and Aluminium radiators?


Traditional cast iron radiators have been the staple material in period homes and schools since the Victorian age. Their dense heavy structure takes time to reach optimal temperature but remains hot long after the central heating is turned off - perfect for cold or large period homes.

For more control and a range of traditional and modern designs, steel radiators may be the better choice. Comprised from a lighter less dense material, steel radiators will heat up and cool down quickly providing manageable control.

Aluminium is a highly efficient conductive material that will heat up instantly after the central heating is turned on, giving you total control over your central heating system.




What is the difference between single and double designer radiators?


Using models with additional rows of tubes or multiple columns maximises heat output within the same wall space.

For example, our Beaufort designer radiator comes in both single or double versions, here is an example of the comparable heat outputs for the same width and height:

  • Beaufort single: 2010mm x 305mm = 2228 BTUs

Vs

  • Beaufort double: 2010mm x 305mm = 3323 BTUs




What are Electric/Dual Fuel radiators?


Most of our towel rails can be converted to work as dual fuel models. An element and T piece is needed to adapt the towel rail; your installer will need to be aware if you wish to do this in order to adjust pipe centres accordingly.

Duel Fuel allows you to connect your towel rail to both your central heating system and mains electricity, this flexibly allows any dual fuel towel rail or radiator to operate both when the central heating is on, heating the whole house, or independently when you want to heat only the room the towel rail is in . This flexibility allows use during those summer months when you want to warm your towels even when the heating system is off. Duel fuel requires a compatible radiator or towel rail, with a corresponding heating element and T-piece.

If a towel rail is suitable for dual fuel, it will be noted in the overview found on each product page.





Radiator Positioning

Where should I position my radiators?


In new modern homes, radiator positioning is less important due to insulation and modern building regulations however please be sure to consult your plumber or heating engineer prior to purchase and installation of your radiator. In traditional homes, most radiators are best placed in the coldest part of the room - usually found under a window, as this allows for airflow and radiant air convection.

Large spaces are more effectively heated with 2 or more, smaller radiators rather than one large one.

A rule of the thumb often used in the trade is to have one radiator every four metres (about 15 feet) or so in the room. An alternative could be two tall thin radiators either side of the window or a long low radiator along the wall.




Should I choose horizontal or vertical?


Many of our designs are available in horizontal or vertical options, which one you choose depends on your available space and how you can maximize the use of the space without compromising or losing the required heat output.




What clearances do I need above and below my radiator to ensure maximum efficiency?


We recommend that clearances of 50mm above and 100mm below should be left clear so heat from the radiator can be effectively distributed.




Can I curve or bend radiators to fit into an existing bay window?


Some radiators can be curved or bent to fit a bay window, unfortunatly we do not supply these. if you require a curved radiator plese visit The Radiator Company who provides this type of radiator from their Ancona range, where they can curve the radiator to your specifications.





Colours & Painting

What are the different colour options?


Most of our radiators and towel rails are available in a range of colours. Each product page states the colours available for that specific product.

For help choosing your finish please review our colour chart.

Please note that due to the screen resolutions, printing process and manufacturing tolerances the colour (including white) of a finished radiator may vary slightly from the colours represented on the website. It should also be noted that if the same type of Radiators are ordered and produced at different times they may also differ marginally in finished colour from any previously ordered.




What should I paint my radiators with?


The radiators supplied with painted finishes have a very durable baked-on powder coated finish that will not fade. They should not be re-painted as this will void the warranty.




Can I remove and refit my radiators for decoration purposes?


Individual radiators can be drained down when the system is turned off by protecting the floor, closing both valve heads fully using decorators’ caps provided. Decorators caps must be used on a thermostatic TRV head valve to ensure it closes fully; valve tails should be blanked off as an additional precaution.

To remove a radiator, loosen the nut connecting the valve tail to the valve and drain the radiator (use a shallow container to collect the water, this water could be very dirty so take care to avoid spillages). Disconnect the valve tail from the valve and remove the radiator.

Remember, when refitting a removed radiator, the heating system may require “topping up”. It is important when topping up your heating system, you also include an appropriate amount of mixed metal inhibitor. Your installer will be able to help.




Can I fit decorative covers over my radiators?


Decorative covers can be utilised; however, they will significantly reduce the output of a radiator. The amount of heat reduction is dependent on the actual design of the cabinet and radiator so we cannot give an exact heat reduction figure.

Thermostatic radiator valves should not be fitted inside the radiator cover as they are designed to measure temperature in order to function accurately.





Technical Information

What are the different colour options?


Most of our radiators and towel rails are available in a range of colours. Each product page states the colours available for that specific product.

For help choosing your finish please review our colour chart.

Please note that due to the screen resolutions, printing process and manufacturing tolerances the colour (including white) of a finished radiator may vary slightly from the colours represented on the website. It should also be noted that if the same type of Radiators are ordered and produced at different times they may also differ marginally in finished colour from any previously ordered.




What should I paint my radiators with?


The radiators supplied with painted finishes have a very durable baked-on powder coated finish that will not fade. They should not be re-painted as this will void the warranty.




Can I remove and refit my radiators for decoration purposes?


Individual radiators can be drained down when the system is turned off by protecting the floor, closing both valve heads fully using decorators’ caps provided. Decorators caps must be used on a thermostatic TRV head valve to ensure it closes fully; valve tails should be blanked off as an additional precaution.

To remove a radiator, loosen the nut connecting the valve tail to the valve and drain the radiator (use a shallow container to collect the water, this water could be very dirty so take care to avoid spillages). Disconnect the valve tail from the valve and remove the radiator.

Remember, when refitting a removed radiator, the heating system may require “topping up”. It is important when topping up your heating system, you also include an appropriate amount of mixed metal inhibitor. Your installer will be able to help.




Can I fit decorative covers over my radiators?


Decorative covers can be utilised; however, they will significantly reduce the output of a radiator. The amount of heat reduction is dependent on the actual design of the cabinet and radiator so we cannot give an exact heat reduction figure.

Thermostatic radiator valves should not be fitted inside the radiator cover as they are designed to measure temperature in order to function accurately.





Installation

Who will install my radiators?


Radiators Direct radiators can be installed by any competent plumber / installer (electrician for electric models) who is preferably Gas Safe registered.




What should I use to secure the radiator to the wall?


Radiators are heavy items and should be securely fastened to the wall. Specific care should be taken to identify the construction of the wall and use the appropriate fasteners to secure the radiator brackets. All Radiators Direct radiators are supplied with the correct brackets and detailed instructions, which are also available on the relevant product pages for download.




How do I fit valves?


Firstly, the heating system needs to be switched off, and the radiator needs to be drained.

- Remove the current valve (if applicable) by loosening the connecting and securing nuts.
- Wrap at least five turns of PTFE tape around the threaded tails of the new valves and screw them into the radiator and pipework.

Make sure the PTFE tape stays on the thread rather than just running along it as you tighten. If it does run, undo the valve and roughen the thread slightly with a hacksaw blade then re-tape the thread. (Some of our valves have parallel threads which means that they never tighten against a stop like traditional valves, so more PTFE tape than usual is required. We recommend the use of gas type PTFE which is much thicker than the standard).

- Tighten the connecting and securing nuts to secure the valve.

If you are also replacing the lock shield repeat above steps.




Should I prepare my pipe work before my radiators arrive?


We endeavour to ensure all pipe centres are correct on our website, however manufacturing tolerances must be considered; therefore we strongly recommend that pipe work is not installed or altered until your new radiator or towel rail is delivered.

The Radiators Direct will not accept any responsibility for claims resulting from incorrect pipe centres.




Can I use microbore pipework?


Yes, but on large cast iron radiators (over 3500 watts) it can prove problematic on balancing the central heating system. If in doubt, ask your plumber / installer.

Microbore pipework can also prove challenging for tall (vertical) radiators. We recommend asking your heating engineer for guidance if you have microbore pipework and are considering vertical radiators.