Here at the heat is on, we put the knowledge of what you need directly in your hands as the homeowner, so you needn’t ask or wait for information from your plumber. Here we give you complete expert guidance for this specific designer radiator — including details of any additional parts required — so you can ensure a smooth and successful installation when your tradesman arrives.

heat output

• Firstly, if you haven't already done so – use our heat calculator to work out your specific requirements for your room, ensuring you are selecting the correct size designer radiator in terms of the BTUs heat output it provides.

design & material

• SOLID is a horizontal panel radiator featuring a decorative flat front for a clean, elegant appearance.
• The solid flat fascia creates a minimalist, streamlined look that integrates seamlessly into modern interiors, keeping walls visually uncluttered.
• Sleek, contemporary design with a strong focus on simplicity and modern elegance.
• Behind the decorative panel sits a high-output double panel radiator with additional convection fins, delivering excellent heat performance.
• Crafted from high-quality, low carbon mild steel for durability and long-lasting performance.
• Additionally, we have created a thorough and detailed technical guide on central heating radiators, giving even more information and tips.

full range of sizes available

• In addition to the sizes we are displaying here on the heat is on, you can view the full range of 7 different sizes of SOLID here on the Terma website.
• When viewing the Terma website, heat outputs are only listed in Watts – using the column header stating 75/65/20, multiply the amounts by 3.41 to get the BTUs equivalent.
• If you want to learn more about heat output, view our technical guide on heat output.
• We can process a special order for any size you wish to purchase if that size is not shown on our website.

colour & finish

• Painted in RAL 6012 Matt Black Green.
• Finished in a matt, smooth texture.
• This is a standard powder paint.
• Additionally, we have created a thorough and detailed technical guide on paint finishes and colours, giving even more information and tips.

installation & orientation

• Features 50mm pipe connections; recommended for use with a matching 50mm H-block valve for a neat, streamlined installation.
• The solid front fascia clips firmly into place, allowing valve connections to be positioned on either the left or right by rotating the fascia during installation.
• Compatible with standard central heating systems.

advice on which valves to purchase for piped installation (central heating)

• This radiator is not supplied with valves, as we offer a wide selection of styles and colours. We do not include them (as some retailers do) because we cannot make this aesthetic choice on your behalf.
• We make choosing the correct valves straightforward. With years of experience, we know that once a radiator is chosen, valve selection can feel daunting — and even plumbers rarely make the best aesthetic choice. As the homeowner, this decision is best made by you, as you’ll be living with the finished result.
• On the right-hand side of this page we have pre-filtered our valve selection to show only the optimal valves for this specific model. You’ll see two sections:
  • 1. matching / complementary colour valve & pipe sets — either an exact match (painted using the same paint as the radiator) or the closest complementary match, depending on availability. These sets include pipes and wall covers for a professional finish.
  • 2. standard valve & pipe sets — more economical valves not painted to match the radiator. Pipes and covers must be purchased separately.
• Which orientation of valves do I need: straight or angled?
  • 1. Pipework through the wall — most modern installations use wall-fed pipework, requiring angled valves. If pipework is not yet installed, we recommend asking your plumber to bring it through the wall.
  • 2. Pipework through the floor — requires straight valves.
• Additionally, we have created a thorough and detailed technical guide on radiator valves, giving even more information and tips.

safety & compliance

• Fully built and tested to EN442 standards and UKCA certified.
• Heat outputs are independently verified by an external testing house to ensure accuracy.

guarantee & warranty

• Supplied with a 12-year manufacturer’s warranty for long-term reassurance.