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Double Panel Radiators

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Source high-output double panel radiators designed to deliver exceptional heating performance for larger spaces. Featuring robust steel construction and integrated convector fins, these units provide excellent thermal efficiency while operating flawlessly on standard central heating systems.
Showing 1—30 items of 354
Specifying a double panel radiator is the most effective way to maximise BTU output in rooms with limited available wall space. Our extensive collection includes both Type 21 (double panel with a single row of convector fins) and Type 22 (double panel with double fins) configurations, allowing installers to match the precise heat loss requirements of any property. Because double panel units hold a larger volume of water and feature an increased surface area. Installers will find industry-standard 15mm connections, factory-fitted top grilles, and robust side panels across the range, ensuring a neat and highly professional finish on site. Securing your necessary heating components is highly straightforward. You can pick up your radiators using our free Click & Collect service in as little as 5 minutes from over 350 branches nationwide, or secure free next working day delivery directly to your site on all orders over £75 ex VAT.

Frequently Asked Questions

What Is a Double Panel Radiator?
A double-panel radiator, also commonly known as a Type 22 or K2 radiator, is a heating appliance connected to a central heating system. As the name suggests, it has two steel panels to radiate heat with hot water flowing through both. Between these two panels, there are typically two sets of zigzagging metal strips called convector fins. This design significantly increases the radiator's surface area, which is key to its high heat output.
FAQs About Double Panel Radiators
Are Double Panel Radiators More Efficient?
Double-panel radiators (also known as Type 22) are generally more efficient at heating larger rooms. While they have a higher running cost than single-panel radiators, their ability to provide a greater and faster heat output means they can heat a larger space more effectively and quickly. This can actually make them more energy-efficient in the long run for a big room, as an undersized single-panel radiator would have to work harder and longer to achieve the same temperature, potentially costing more in the end.
Do Double Radiators Cost More to Run?
Yes, a double-panel radiator will cost more to run than a single-panel model of the same size. This is because they have a greater volume of water to heat, requiring more energy. However, as mentioned above, if a room is large and needs a high heat output, a double-panel radiator may be more cost-effective overall because it can heat the space to a comfortable temperature more quickly and efficiently.
What Is the Difference Between Double and Double Panel Plus?
  • Double-panel (Type 22): This radiator has two steel panels and two sets of convector fins. The fins are the zigzagging metal strips that help circulate warm air.
  • Double Panel Plus (Type 21): This radiator has two steel panels but only one set of convector fins.
The extra set of fins in a Type 22 radiator gives it a greater surface area, resulting in an even higher heat output compared to a Type 21.
Does It Cost More to Fit a Double Panel Radiator?
The cost of fitting a new radiator depends on several factors, but generally, fitting a double-panel radiator may have a slightly higher labor cost than a single-panel one. This is because they are heavier and the installation might be more complex, especially if the new radiator is a different size from the old one, requiring pipework adjustments. The cost of the radiator itself will also be higher.
Can I Change My Single Radiator to a Double Panel?
Yes, you can typically replace a single-panel radiator with a double-panel one. However, there are a few important considerations:
  • Pipework: Double-panel radiators are thicker, so you may need to adjust your existing pipework to accommodate the extra depth.
  • Brackets: The brackets for a double-panel radiator are different from those of a single-panel one, so you will need to replace them.
  • Heat Output: Before making the switch, it's wise to use a BTU calculator to ensure the double-panel radiator's heat output isn't too high for the room.
Can My Boiler Run a Double Panel Radiator?
A modern boiler is generally capable of running a double-panel radiator. However, it's a good idea to consult a professional heating engineer to ensure your boiler's capacity is sufficient for the total heat demand of your entire system. A larger radiator may increase the total volume of water in your system, which your boiler needs to be able to handle.
Do Double Panel Radiators Count as Two on a System?
No, a double-panel radiator does not count as two separate radiators on your system. It is still a single appliance, albeit with a larger heat output due to its design.
Are Double Panel Radiators More Efficient?
Double-panel radiators (also known as Type 22) are generally more efficient at heating larger rooms. While they have a higher running cost than single-panel radiators, their ability to provide a greater and faster heat output means they can heat a larger space more effectively and quickly. This can actually make them more energy-efficient in the long run for a big room, as an undersized single-panel radiator would have to work harder and longer to achieve the same temperature, potentially costing more in the end.
What Is the Difference Between Double and Double Panel Plus?
  • Double-panel (Type 22): This radiator has two steel panels and two sets of convector fins. The fins are the zigzagging metal strips that help circulate warm air.
  • Double Panel Plus (Type 21): This radiator has two steel panels but only one set of convector fins.
The extra set of fins in a Type 22 radiator gives it a greater surface area, resulting in an even higher heat output compared to a Type 21.
Can I Change My Single Radiator to a Double Panel?
Yes, you can typically replace a single-panel radiator with a double-panel one. However, there are a few important considerations:
  • Pipework: Double-panel radiators are thicker, so you may need to adjust your existing pipework to accommodate the extra depth.
  • Brackets: The brackets for a double-panel radiator are different from those of a single-panel one, so you will need to replace them.
  • Heat Output: Before making the switch, it's wise to use a BTU calculator to ensure the double-panel radiator's heat output isn't too high for the room.
Can My Boiler Run a Double Panel Radiator?
A modern boiler is generally capable of running a double-panel radiator. However, it's a good idea to consult a professional heating engineer to ensure your boiler's capacity is sufficient for the total heat demand of your entire system. A larger radiator may increase the total volume of water in your system, which your boiler needs to be able to handle.