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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 Boston Designer Radiator Anthracite 410 x 1200mm Kartell Boston Designer Radiator Anthracite 410 x 1200mm

    Kartell Boston Designer Radiator Anthracite 410 x 1200mm

    £154.76 - £227.62 each (Ex VAT)
    £185.71 - £273.14 each (Inc VAT)
    The Boston Design K-Rad radiator is a very contemporary and stylish radiator, which is available in a variety of sizes. It has been made with a sturdy steel material and is available in single panel. They have solid functional designs with durability and...
  • Kartell Design Twin Pack Angled Thermostatic Radiator Valve Anthracite Kartell Design Twin Pack Angled Thermostatic Radiator Valve Anthracite

    Kartell Design Twin Pack Angled Thermostatic Radiator Valve Anthracite

    The K-Rad Design Twin angled 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 15mm Angled Radiator Valve Anthracite Pair

    Kartell 15mm Angled Radiator Valve Anthracite Pair

    This pair of K-Rad angled radiator valves are a high-quality radiator piece, which are compatible with both floor and wall mounted pipes. They also have a thermostatic control for easy adjustment of heat output and a standard 15mm connection. The...
  • Kartell 15mm Straight Radiator Valve Anthracite Pair

    Kartell 15mm Straight Radiator Valve Anthracite Pair

    This pair of K-Rad straight radiator valves are a high-quality radiator piece, which are compatible with both floor and wall mounted pipes. They also have a thermostatic control for easy adjustment of heat output and a standard 15mm connection. The...
  • Kartell 2 Column Laser Klassic Anthracite Radiator 1800 x 335mm

    The K-Rad 1800mm Laser Klassic radiator in 2 column is perfect for the modern home. It can fit most spaces and can look beautiful in your house. It is manufactured from strong and durable materials and provides the best heat outputs which make your home...
  • Kartell 2 Column Laser Klassic Anthracite Radiator 600 x 650mm

    Kartell 2 Column Laser Klassic Anthracite Radiator 600 x 650mm

    £438.91 - £530.58 each (Ex VAT)
    £526.69 - £636.70 each (Inc VAT)
    The K-Rad 600mm Laser Klassic radiator in 2 column is perfect for the modern home. It can fit most spaces and can look beautiful in your house. It is manufactured from strong and durable materials and provides the best heat outputs which make your home...
  • Kartell 3 Column Laser Klassic Anthracite Radiator 600 x 650mm

    £377.79 - £772.25 each (Ex VAT)
    £453.35 - £926.70 each (Inc VAT)
    The K-Rad 600x1010mm 22 sec Laser Klassic radiato in 3 col is perfect for the modern home. It can fit most spaces and can look beautiful in your house. It is manufactured from strong and durable materials and provides the best heat outputs which make...
  • Kartell Aspen Designer Radiator Single Anthracite 600 x 1150mm

    £135.55 - £311.12 each (Ex VAT)
    £162.66 - £373.34 each (Inc VAT)
    The stunning K-Rad Aspen Vertical Single radiator in 600x1150 combines both performance and style, with impressive heat outputs and will be a focal point for any room setting. The sleek design also adds a very contemporary feel to the room, with...
  • Kartell Aspen Designer Radiator Vertical Double Anthracite 1600 x 430mm

    £278.89 - £473.89 each (Ex VAT)
    £334.67 - £568.67 each (Inc VAT)
    The stunning K-Rad Aspen Vertical Double radiator in 1600x430 combines both performance and style, with impressive heat outputs and will be a focal point for any room setting. The sleek design also adds a very contemporary feel to the room, with...
  • Kartell Aspen Designer Radiator Vertical Single Anthracite 1600 x 430mm

    £216.67 - £357.79 each (Ex VAT)
    £260.00 - £429.35 each (Inc VAT)
    The stunning K-Rad Aspen Vertical Single radiator in 1600x430 combines both performance and style, with impressive heat outputs and will be a focal point for any room setting. The sleek design also adds a very contemporary feel to the room, with...
  • Kartell Atlantic Designer Radiator Anthracite 500 x 1185mm

    Kartell Atlantic Designer Radiator Anthracite 500 x 1185mm

    This amazing K-Rad 500mmx1185mm Atlantic Design central heated radiator features a modern rectangular design. It is guaranteed to add style and sophistication within your home, while also boosting a high heat output. The anthracite matte finish also adds...
  • Kartell Boston Designer Radiator Double Anthracite 600 x 1190mm

    £153.89 - £419.46 each (Ex VAT)
    £184.67 - £503.35 each (Inc VAT)
    The Boston Double K-Rad radiator is extremely sleek and supremely effective. It has a slender horizontal double panel design and can be wall-mounted with ease. It also has a high heat output, which is beneficial for in those cold, winter nights. It is...
  • Kartell Boston Designer Radiator Single Anthracite 600 x 1190mm

    £96.12 - £231.12 each (Ex VAT)
    £115.34 - £277.34 each (Inc VAT)
    The Boston Single K-Rad radiator is extremely sleek and supremely effective. It has a slender horizontal single panel design and can be wall-mounted with ease. It also has a high heat output, which is beneficial for in those cold, winter nights. It is...
  • Kartell Cincinnati Designer Radiator Anthracite 276 x 2000mm

    Kartell Cincinnati Designer Radiator Anthracite 276 x 2000mm

    The K-Rad Cincinnati Design Radiator in 276mmx2000mm is a quality concurrent radiator with a clean, synchronic look. It acts as a remarkable focal point for any modern bathroom and can supply a remarkable amount of valuable background heat. It comes in a...
  • Kartell Denver Designer Radiator Anthracite 500 x 1000mm

    £142.39 - £190.00 each (Ex VAT)
    £170.87 - £228.00 each (Inc VAT)
    The K-Rad amazing 500x1000 Designer Rail is a beautifully modern radiator, with a stylish and versatile unit that is designed to operate via central heating fuel type. It is crafted from incredibly durable and long-lasting material and offered in a...
  • 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 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 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 Kolumn Dual Column Towel Radiator Anthracite 1140 x 500mm

    £170.96 - £223.34 each (Ex VAT)
    £205.15 - £268.01 each (Inc VAT)
    The K-Rad Kolumn Dual 1140x500 towel radiator is made up of top-class materials for durability; and has a substantial heat output, which is sufficient in keeping the towel and room warm. This stylish product is designed to look good in any room. The...
  • Kartell Oregon Anthracite Designer Radiator 500 x 1180mm

    This stunning K-Rad 500mmx1180mm Oregon Design radiator offers tremendous style and amazing heat output. The Oregon Design radiator comes complete in an anthracite matte finish, adding a unique addition to your home, where you will receive lots of...
  • Kartell Straight Towel Rail 22mm Anthracite 400 x 800mm

    £75.93 - £140.10 each (Ex VAT)
    £91.12 - £168.12 each (Inc VAT)
    The 22m 400mm x 1000mm Straight Towel K-Rail provides a touch of class and a modern edge to your bathroom space, and is also operated by a central heating system for impressive heat outputs. The straight towel rail also comes complete in a stunning...
  • Kartell Straight Towel Rail Anthracite 500 x 1000mm

    £93.57 - £117.10 each (Ex VAT)
    £112.28 - £140.52 each (Inc VAT)
    The 22m 500mm x 1000mm Straight Towel K-Rail provides a touch of class and a modern edge to your bathroom space, and is also operated by a central heating system for impressive heat outputs. The straight towel rail also comes complete in a stunning...
  • Kartell Tampa Anthracite Designer Towel Rail 1200 x 500mm

    £191.67 - £232.79 each (Ex VAT)
    £230.00 - £279.35 each (Inc VAT)
    The K-Rad Tampa 1200x500 towel rail is an incredibly chic towel rail, which is just right for small to midsize bathrooms or for extra convenience in larger bathrooms. It is strong and suitable for everyday use, while its anthracite matte finish will also...
  • Kartell Venetian Anthracite Designer Towel Rail 1100 x 500mm

    £170.96 - £261.43 each (Ex VAT)
    £205.15 - £313.72 each (Inc VAT)
    The K-Rad Venetian 850x500 towel rail is an excellent addition to your home, as it features a modern and elegant design with venetian style rails. Manufactured from durable steel, it has an eye-catching appearance, while its anthracite matte finish will...

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.