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Radiators & Heaters

Radiators and heaters available online and in branch. Double panel and single panel radiators and different sizes and styles available. Sizes include 600 x 400, 600 x 600, 600 x 1600 and many more.  

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  • Kartell Design Twin Pack Corner Thermostatic Radiator Valve Anthracite

    Kartell Design Twin Pack Corner Thermostatic Radiator Valve Anthracite

    The K-Rad Design Twin corner TRV is a radiator piece manufactured from high-quality stainless-steel material. The sleek design is the best quality radiator valve to have in your home, and the anthracite matte finish also adds a unique addition to your...
  • Kartell Design Twin Pack Corner Thermostatic Radiator Valve Black Kartell Design Twin Pack Corner Thermostatic Radiator Valve Black

    Kartell Design Twin Pack Corner Thermostatic Radiator Valve Black

    The K-Rad corner Design Twin TRV is a stylish and modern radiator part which is supplied in a pair. It has a very high-quality finish construction and a beautiful sleek black finish, which will no doubt encourage lots of compliments from guests.
  • Kartell Design Twin Pack Corner Thermostatic Radiator Valve Brushed Brass Kartell Design Twin Pack Corner Thermostatic Radiator Valve Brushed Brass

    Kartell Design Twin Pack Corner Thermostatic Radiator Valve Brushed Brass

    This pair of K-Rad Corner Design Twin TRV are a stylish and modern radiator part. They have a very high-quality finish construction and a beautiful sleek brushed brass finish, which will no doubt encourage lots of compliments from guests.
  • Kartell Design Twin Pack Corner Thermostatic Radiator Valve Brushed Nickel Kartell Design Twin Pack Corner Thermostatic Radiator Valve Brushed Nickel

    Kartell Design Twin Pack Corner Thermostatic Radiator Valve Brushed Nickel

    This pair of K-Rad Corner Design Twin TRV are a stylish and modern radiator part. They have a very high-quality finish construction and a beautiful sleek brushed nickle finish, which will no doubt encourage lots of compliments from guests.
  • Kartell Design Twin Pack Corner Thermostatic Radiator Valve Chrome Kartell Design Twin Pack Corner Thermostatic Radiator Valve Chrome

    Kartell Design Twin Pack Corner Thermostatic Radiator Valve Chrome

    This pair of K-Rad Corner Design Twin TRV are a stylish and modern radiator part. They have a very high-quality finish construction and a beautiful sleek chrome finish, which will no doubt encourage lots of compliments from guests.
  • Kartell Design Twin Pack Corner Thermostatic Radiator Valve White Kartell Design Twin Pack Corner Thermostatic Radiator Valve White

    Kartell Design Twin Pack Corner Thermostatic Radiator Valve White

    This pair of K-Rad Corner Design Twin TRV are a stylish and modern radiator part. They have a very high-quality finish construction and a beautiful sleek white finish, which will no doubt encourage lots of compliments from guests.
  • Kartell Design Twin Pack Straight Thermostatic Radiator Valve Anthracite

    Kartell Design Twin Pack Straight Thermostatic Radiator Valve Anthracite

    The K-Rad Design Twin straight TRV is a radiator piece manufactured from high-quality stainless-steel material. The sleek design is the best quality radiator valve to have in your home, and the anthracite matte finish also adds a unique addition to your...
  • Kartell Design Twin Pack Straight Thermostatic Radiator Valve Black Kartell Design Twin Pack Straight Thermostatic Radiator Valve Black

    Kartell Design Twin Pack Straight Thermostatic Radiator Valve Black

    The K-Rad straight Design Twin TRV is a stylish and modern radiator part which is supplied in a pair. It has a very high-quality finish construction and a beautiful sleek black finish, which will no doubt encourage lots of compliments from guests.
  • Kartell Design Twin Pack Straight Thermostatic Radiator Valve Chrome Kartell Design Twin Pack Straight Thermostatic Radiator Valve Chrome

    Kartell Design Twin Pack Straight Thermostatic Radiator Valve Chrome

    This pair of K-Rad Straight Design Twin TRV are a stylish and modern radiator part. They have a very high-quality finish construction and a beautiful sleek chrome finish, which will no doubt encourage lots of compliments from guests.
  • Kartell Design Twin Pack Straight Thermostatic Radiator Valve White Kartell Design Twin Pack Straight Thermostatic Radiator Valve White

    Kartell Design Twin Pack Straight Thermostatic Radiator Valve White

    This pair of K-Rad Straight Design Twin TRV are a stylish and modern radiator part. They have a very high-quality finish construction and a beautiful sleek white finish, which will no doubt encourage lots of compliments from guests.
  • Kartell Dual Fuel 300W Thermostatic Element Kartell Dual Fuel 300W Thermostatic Element

    Kartell Dual Fuel 300W Thermostatic Element

    This heating element enables dual-fuel heating from both the central heating system as well as from the electric. Quick and easy to fit, this dual-fuel heating element features on/off operation, allowing for year-round towel airing and heating when the...
  • Kartell Dual Fuel 600W Thermostatic Element Kartell Dual Fuel 600W Thermostatic Element

    Kartell Dual Fuel 600W Thermostatic Element

    This heating element allows for dual-fuel heating from both the central heating system and the electric. This dual-fuel heating element is quick and simple to install and offers on/off operation, allowing for year-round towel airing and heating when the...
  • Kartell Dual Fuel Element Kartell Dual Fuel Element

    Kartell Dual Fuel Element

    £40.39 - £44.87 each (Ex VAT)
    £48.47 - £53.84 each (Inc VAT)
    The K-Rad Dual Fuel is a radiator part that could massively improve the efficiency of your radiator by providing year-round towel airing. It is plumbed into the central heating system and can also be used for heat in the bathroom when the system is...
    £40.39 - £44.87 each (Ex VAT)
    £48.47 - £53.84 each (Inc VAT)
  • Kartell Idaho Designer Radiator Kartell Idaho Designer Radiator

    Kartell Idaho Designer Radiator

    £413.34 - £790.02 each (Ex VAT)
    £496.01 - £948.02 each (Inc VAT)
    £413.34 - £790.02 each (Ex VAT)
    £496.01 - £948.02 each (Inc VAT)

  • Kartell Joining Key

    No radiator is complete without the right pair of valves and the perfect accessories. Cast iron radiators come assembled up to a maximum of 10 sections, but radiators larger than these will require on site assembly using an appropriate joining key. It...
  • Kartell K-Flat Premium Radiator Type 11 Single 400mm Tall

    Kartell K-Flat Premium Radiator Type 11 Single 400mm Tall

    £154.75 - £282.31 each (Ex VAT)
    £185.70 - £338.77 each (Inc VAT)
    The K-Rad Premium Vertical K-Flat 400x1000 in Type 11 is a quality central heating radiator, with an excellent heat output. It also offers an unbeatable value for money. It is supplied with side panels and is a double panel radiator.
    £154.75 - £282.31 each (Ex VAT)
    £185.70 - £338.77 each (Inc VAT)
  • Kartell K-Flat Premium Radiator Type 11 Single 500mm Tall

    Kartell K-Flat Premium Radiator Type 11 Single 500mm Tall

    £140.38 - £408.44 each (Ex VAT)
    £168.46 - £490.13 each (Inc VAT)
    The K-Rad Premium Vertical K-Flat 500x1000 in Type 11 is a quality central heating radiator, with an excellent heat output. It also offers an unbeatable value for money. It is supplied with side panels and is a double panel radiator.
    £140.38 - £408.44 each (Ex VAT)
    £168.46 - £490.13 each (Inc VAT)
  • Kartell K-Flat Premium Radiator Type 11 Single 600mm Tall

    Kartell K-Flat Premium Radiator Type 11 Single 600mm Tall

    £168.49 - £490.18 each (Ex VAT)
    £202.19 - £588.22 each (Inc VAT)
    The K-Rad Premium Vertical K-Flat 600x1000 in Type 11 is a quality central heating radiator, with an excellent heat output. It also offers an unbeatable value for money. It is supplied with side panels and is a double panel radiator.
    £168.49 - £490.18 each (Ex VAT)
    £202.19 - £588.22 each (Inc VAT)
  • Kartell K-Flat Premium Radiator Type 22 Double 400mm Tall

    Kartell K-Flat Premium Radiator Type 22 Double 400mm Tall

    £229.44 - £482.35 each (Ex VAT)
    £275.33 - £578.82 each (Inc VAT)
    The K-Rad Premium Vertical K-Flat 400x1000 in Type 22 is a quality central heating radiator, with an excellent heat output. It also offers an unbeatable value for money. It is supplied with side panels and is a double panel radiator.
    £229.44 - £482.35 each (Ex VAT)
    £275.33 - £578.82 each (Inc VAT)
  • Kartell K-Flat Premium Radiator Type 22 Double 500mm Tall

    Kartell K-Flat Premium Radiator Type 22 Double 500mm Tall

    £209.16 - £563.58 each (Ex VAT)
    £250.99 - £676.30 each (Inc VAT)
    The K-Rad Premium Vertical K-Flat 500x1000 in Type 22 is a quality central heating radiator, with an excellent heat output. It also offers an unbeatable value for money. It is supplied with side panels and is a double panel radiator.
    £209.16 - £563.58 each (Ex VAT)
    £250.99 - £676.30 each (Inc VAT)
  • Kartell K-Flat Premium Radiator Type 22 Double 600mm Tall

    Kartell K-Flat Premium Radiator Type 22 Double 600mm Tall

    £231.09 - £781.86 each (Ex VAT)
    £277.31 - £938.23 each (Inc VAT)
    The K-Rad Premium Vertical K-Flat 600x1000 in Type 22 is a quality central heating radiator, with an excellent heat output. It also offers an unbeatable value for money. It is supplied with side panels and is a double panel radiator.
    £231.09 - £781.86 each (Ex VAT)
    £277.31 - £938.23 each (Inc VAT)
  • Kartell Kansas Designer Radiator Anthracite 351 x 2000mm

    Kartell Kansas Designer Radiator Anthracite 351 x 2000mm

    The K-Rad Kansas Design radiator in 351mm x 2000mm is a quality contemporary radiator with a curved profile. It is guaranteed to bring luxury and class to your bathroom with its high heat output and striking appearance. It comes completed with an...
  • Kartell KRAD Premium Radiator Type 11 Single 400mm Tall Kartell KRAD Premium Radiator Type 11 Single 400mm Tall

    Kartell KRAD Premium Radiator Type 11 Single 400mm Tall

    £18.19 - £136.41 each (Ex VAT)
    £21.83 - £163.69 each (Inc VAT)
    The K-Rad type 11 400x56mm radiator is a premium central heating radiator that will look good in any room. It offers high performance and maximum efficiency, with a double panel and double convector. It is also easy to install and has a high-quality...
    £18.19 - £136.41 each (Ex VAT)
    £21.83 - £163.69 each (Inc VAT)

Radiators & Heaters

Radiators have been around for a long time as hot water is a very common form of heating for homes. A radiator is essentially a metal structure that is made up of hollow areas that fill up with hot water, this in turn heats up the metal which warms up the room. Eventually the water cools, and the cold water moves down to the bottom of the radiator, before leaving via a pipe. The hot water stays at the top, which is why radiators are typically hotter at the top than at the bottom. Hot water is conveyed to the radiators using one of three methods: pressure pump, gravity, and convection. They are a necessity for 21st century modern life, and at Howarth we have a wide range of radiators and electric heaters to help you spread the warmth.

Types of Radiators

Before you decide which radiator would be the best fit for you, there are a few things you need to consider before making any decisions, for example: the type of windows you have (single our double glazed), whether your house is sheltered or exposed, and whether the size of the radiators could fit inside your home.

Steel is the most popular material of radiator, as it is an excellent heat conductor. They also heat up quickly, and they retain heat for a long time even after the central heating has switched off. Column radiators are traditionally styled radiators and are made from hollow tubes of mild steel or cast iron, and have been designed to maximise the surface area, which allows them to heat a room up rapidly.

Panel radiators are one of the original forms of radiator and can distribute both convection and radiant heat. They are fast, silent, and responsive.

Compact radiators are like panel radiators, except that they have a more modern look to them and can blend into any room in the house to provide guaranteed heating.

Towel rails have become widely popular over the last few years due to its trendy, modern appearance in most home and hotel bathrooms. Although towel radiators may not give off an extreme amount of heat in comparison to our compact radiators, they are great for keeping your towels fresh and dry and are nice to look at.

For further expert advice and guidance on which radiator would be best for your home, please contact your friendly local Howarth branch.

How to guides

How to bleed a radiator

A guide including step-by-step instructions on how to successfully bleed your radiator.

How to clean a radiator

A step-by-step guide on how to succesfully clean radiators.

How to remove a radiator

A helpful guide which includes step-by-step instructions on how to successfully remove your radiator.

Towel Rails: An Ultimate Guide

An article featuring a wide range of information on towel rails, from colours to accessories and sizes.

Frequently Asked Questions

Which are the best radiators?
At Howarth, we have a wide range of radiators on offer. Efficiency is important, and with new radiators, you'll want to look at the heat output to make sure you select one that's right for your room. It also depends on the size of your room, and what kind of design and style you’d like. Modern vertical radiators are a great choice as they are durable, have a great heat output, and are contemporary and elegant in design. However, they do take a while to heat up, and are quite big compared to other radiators. Compact radiators are also a good choice, as they are smaller and better for traditional spaces. They’re also lightweight and inexpensive but do contain a plainer design. Overall, there are a wide range of good radiators, but choosing which one is best for you ultimately depends on a lot of factors, such as heat requirements of the space, room sizes, window dimensions and even the materials used in the walls.
Do radiators use gas?
Gas central heating is one of the most widely used heating systems in the UK, with most homes using it. Radiators for gas central heating use a combination of convected and radiated heat to distribute heat. Hot water from the pipes warms the surface of a gas central heating radiator, which then radiates heat into the room. Cold air passes through the radiator channels and is heated by the hot pipes, circulating warm air across the room, and heating it via convection. This creates a comfortable and efficient thermal balance. However, because water takes longer to travel from the boiler to the radiators, your rooms may take longer to heat up.
How to turn off a radiator?
If your radiator has a thermostatic valve, locate it on the left side of the radiator to turn it off. Then clockwise turn the valve until the dial reads 0. Next, on the right hand side of the radiator, locate the second valve called the RAD valve, and twist it clockwise until it no longer twists. The radiator will be totally switched off and cooled once both valves are closed.
How to turn on a radiator?
To turn the radiator back on, turn the thermostatic valve anti-clockwise until you get to the desired number you’d like, such as 3 or 4. Then, on the right hand side of the radiator, locate the second valve and twist it anti-clockwise until it stops twisting. When the valves are fully on, turn it back a quarter, as this stops the valves from ceasing up from corrosion.

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