Check local branch stock
-
Kartell K-Flat Kompact Radiator Type 11 Single 500 x 400mm
£166.94 - £377.39 each (Ex VAT)£200.33 - £452.87 each (Inc VAT)The K-Rad K-Flat radiator in Type 11 at 500x1000 is a horizontal double convector radiator, which will enhance any home with space saving classic elegance and efficiency. They have over a wide range of sizes, and the modern look to the radiator will... -
Kartell K-Flat Kompact Radiator Type 11 Single 600 x 400mm
£183.84 - £235.34 each (Ex VAT)£220.61 - £282.41 each (Inc VAT)The K-Rad K-Flat radiator in Type 11 at 600x1000 is a horizontal double convector radiator, which will enhance any home with space saving classic elegance and efficiency. They have over a wide range of sizes, and the modern look to the radiator will... -
Kartell K-Flat Kompact Radiator Type 22 Double 400 x 600mm
£187.62 - £429.75 each (Ex VAT)£225.14 - £515.70 each (Inc VAT)The K-Rad K-Flat radiator in Type 22 at 400x1000 is a horizontal double convector radiator, which will enhance any home with space saving classic elegance and efficiency. They have over a wide range of sizes, and the modern look to the radiator will... -
Kartell K-Flat Kompact Radiator Type 22 Double 500 x 400mm
£174.26 - £506.61 each (Ex VAT)£209.11 - £607.93 each (Inc VAT)The K-Rad K-Flat radiator in Type 22 at 500x1000 is a horizontal double convector radiator, which will enhance any home with space saving classic elegance and efficiency. They have over a wide range of sizes, and the modern look to the radiator will... -
Kartell K-Flat Kompact Radiator Type 22 Double 600 x 400mm
The K-Rad K-Flat radiator in Type 22 at 600x1000 is a horizontal double convector radiator, which will enhance any home with space saving classic elegance and efficiency. They have over a wide range of sizes, and the modern look to the radiator will... -
Kartell K-Flat Kompact Vertical Radiator Type 10 Single 1800 x 300mm
£251.77 - £361.60 each (Ex VAT)£302.12 - £433.92 each (Inc VAT)The K-Rad vertical K-Flat 1800x300 in type 2 is a quality central heating radiator, with an excellent heat output. The sophisticated and stylish design of the radiator will make it a statement for your home. They are also ideal for smaller rooms too, as... -
Kartell K-Flat Kompact Vertical Radiator Type 20 Double 1800 X 300mm
£361.60 - £536.76 each (Ex VAT)£433.92 - £644.11 each (Inc VAT)The K-Rad Vertical K-Flat 1800x300 in Type 20 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. -
![Kartell K-Flat Premium Radiator Type 11 Single 500 x 400mm]( "Kartell K-Flat Premium Radiator Type 11 Single 500 x 400mm")
Kartell K-Flat Premium Radiator Type 11 Single 500 x 400mm
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. -
![Kartell K-Flat Premium Radiator Type 11 Single 600 x 400mm]( "Kartell K-Flat Premium Radiator Type 11 Single 600 x 400mm")
Kartell K-Flat Premium Radiator Type 11 Single 600 x 400mm
£168.49 - £490.17 each (Ex VAT)£202.19 - £588.20 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. -
![Kartell K-Flat Premium Radiator Type 22 Double 400 x 600mm]( "Kartell K-Flat Premium Radiator Type 22 Double 400 x 600mm")
Kartell K-Flat Premium Radiator Type 22 Double 400 x 600mm
£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. -
![Kartell K-Flat Premium Radiator Type 22 Double 500 x 400mm]( "Kartell K-Flat Premium Radiator Type 22 Double 500 x 400mm")
Kartell K-Flat Premium Radiator Type 22 Double 500 x 400mm
£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. -
![Kartell K-Flat Premium Radiator Type 22 Double 600 x 400mm]( "Kartell K-Flat Premium Radiator Type 22 Double 600 x 400mm")
Kartell K-Flat Premium Radiator Type 22 Double 600 x 400mm
£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. -
Kartell K-Flat Vertical Premium Radiator Type 10 Single 1800 x 300mm
£289.49 - £415.89 each (Ex VAT)£347.39 - £499.07 each (Inc VAT)The K-Rad Premium Vertical K-Flat 1800x300 in Type 10 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. -
Kartell K-Flat Vertical Premium Radiator Type 20 Double 1800 x 300mm
£412.56 - £594.50 each (Ex VAT)£495.07 - £713.40 each (Inc VAT)The K-Rad Premium Vertical K-Flat 1800x300 in Type 20 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. -
![Kartell Kansas Designer Radiator Anthracite 351 x 2000mm]( "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 Kolumn Dual Column Towel Radiator White 1140 x 500mm
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 KRAD Premium Radiator Type 11 Single 300 x 400mm]( "Kartell KRAD Premium Radiator Type 11 Single 300 x 400mm")
Kartell KRAD Premium Radiator Type 11 Single 300 x 400mm
£28.13 - £112.54 each (Ex VAT)£33.76 - £135.05 each (Inc VAT) -
![]()
![Kartell KRAD Premium Radiator Type 11 Single 400 x 400mm]( "Kartell KRAD Premium Radiator Type 11 Single 400 x 400mm")
Kartell KRAD Premium Radiator Type 11 Single 400 x 400mm
£22.61 - £161.49 each (Ex VAT)£27.13 - £193.79 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... -
![Kartell KRAD Premium Radiator Type 11 Single 500 x 300mm]( "Kartell KRAD Premium Radiator Type 11 Single 500 x 300mm")
![Kartell KRAD Premium Radiator Type 11 Single 500 x 300mm]( "Kartell KRAD Premium Radiator Type 11 Single 500 x 300mm")
Kartell KRAD Premium Radiator Type 11 Single 500 x 300mm
The K-Rad type 11 500x300 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... -
![]()
![Kartell KRAD Premium Radiator Type 11 Single 600 x 300mm]( "Kartell KRAD Premium Radiator Type 11 Single 600 x 300mm")
Kartell KRAD Premium Radiator Type 11 Single 600 x 300mm
£26.76 - £160.54 each (Ex VAT)£32.11 - £192.65 each (Inc VAT)The K-Rad type 11 600x1400 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... -
![]()
![Kartell KRAD Premium Radiator Type 11 Single 750 x 400mm]( "Kartell KRAD Premium Radiator Type 11 Single 750 x 400mm")
Kartell KRAD Premium Radiator Type 11 Single 750 x 400mm
£41.74 - £178.92 each (Ex VAT)£50.09 - £214.70 each (Inc VAT)The K-Rad type 11 750x56mm 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... -
Kartell KRAD Premium Radiator Type 11 Single 900 x 400mm
The K-Rad type 11 900x400 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... -
![]()
![Kartell KRAD Premium Radiator Type 21 Single 400 x 400mm]( "Kartell KRAD Premium Radiator Type 21 Single 400 x 400mm")
Kartell KRAD Premium Radiator Type 21 Single 400 x 400mm
£47.02 - £235.15 each (Ex VAT)£56.42 - £282.18 each (Inc VAT)The K-Rad type 21 400x70mm 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...
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 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.