| 1 | Type 22 double-panel, double-convector steel radiator | 600 × 1000 mm | Approximately 1,700 W | Approximately 860 W | Compatible with standard thermostatic radiator valves using common European threaded connections; confirm thread and valve body dimensions. | Side-entry or bottom-opposite connections, depending on model | Wall brackets required; allow clearance for airflow and valve operation. | High surface area and strong low-temperature performance; suitable for condensing boilers and heat pumps when correctly sized. | Medium to large living rooms |
| 2 | Type 22 compact panel radiator with integrated valve body | 600 × 1000 mm | Approximately 1,650 W | Approximately 830 W | Designed for a compatible TRV insert; remote or angled TRV heads may be used where access is restricted. | Bottom connections, commonly opposite-end configuration | Fast installation on pre-plumbed systems; flow direction and valve insert must be checked. | Good control accuracy and neat pipework; output remains dependent on actual system temperature. | New construction and renovations |
| 3 | Type 33 triple-panel, triple-convector steel radiator | 600 × 1000 mm | Approximately 2,400 W | Approximately 1,200 W | Compatible with standard TRV heads and lockshield valves when the valve body is correctly matched to the pipework. | Side-entry connections; optional bottom connection on selected formats | Heavier than Type 11 or Type 22 units; use suitable brackets and wall fixings. | Very high output per wall length, but greater water content can increase warm-up time. | Large rooms with limited wall length |
| 4 | Type 11 single-panel, single-convector steel radiator | 600 × 1000 mm | Approximately 950 W | Approximately 480 W | Works with common mechanical TRVs and electronic TRV heads using the correct adapter or valve body. | Side-entry connections | Lightweight and simple to mount; suitable for shallow wall spaces. | Low water volume supports quick response and room-by-room control, although more wall length may be needed. | Bedrooms, corridors, and small offices |
| 5 | Vertical Type 22 panel radiator | 1800 × 500 mm | Approximately 1,650 W | Approximately 830 W | Use a TRV head positioned horizontally or with a remote sensor if the valve is exposed to rising heat. | Bottom connections are common; confirm flow and return positions before purchase. | Requires secure fixing to a suitable wall; check height, skirting, and curtain clearance. | Provides useful output where horizontal wall space is limited; accurate balancing is important. | Narrow rooms and feature walls |
| 6 | Low-temperature Type 22 radiator for heat-pump systems | 600 × 1400 mm | Approximately 2,350 W | Approximately 1,180 W | Compatible with mechanical or electronic TRVs; valve sizing should reflect lower design flow temperatures. | Side or bottom connections, subject to the selected format | Requires heat-loss calculation and adequate system flow; oversizing is often necessary for low-temperature operation. | Optimized for lower flow temperatures, improving the operating conditions of condensing boilers and heat pumps. | Heat-pump retrofit projects |
| 7 | Aluminium sectional radiator | 600 mm height, 8 sections | Approximately 1,200 W | Approximately 600 W | Use a TRV and valve set approved for aluminium radiators; check water-treatment requirements and thread standards. | Side connections, typically reversible by installation orientation | Lightweight compared with steel; use compatible plugs, valves, and corrosion-control practices. | Low water content provides fast response, but mixed-metal systems may require appropriate inhibitors. | Retrofits and lightweight partitions |
| 8 | Cast-iron sectional radiator | 600 mm height, 8 sections | Approximately 1,100 W | Approximately 550 W | Compatible with standard TRVs when the valve connection and pipe capacity are suitable; electronic heads may require clearance. | Side connections; custom pipework may be needed for replacements. | Very heavy; structural wall or floor support and careful handling are essential. | High thermal inertia maintains heat for longer but gives slower response to TRV adjustments. | Heritage interiors and high-mass heating systems |
| 9 | Hydronic towel radiator with horizontal rails | 1200 × 500 mm | Approximately 650 W | Approximately 330 W | Suitable for TRVs rated for towel radiators; position the sensor away from direct heat from the rails. | Bottom or side connections, depending on rail layout | Wall fixing must account for tile type, pipe location, and towel loading. | Moderate output; do not rely on it as the sole heat source unless the calculated room load is met. | Bathrooms and utility rooms |
| 10 | Low-profile Type 21 panel radiator | 500 × 1000 mm | Approximately 1,250 W | Approximately 630 W | Compatible with standard TRV bodies; angled or remote-sensor heads help where furniture restricts access. | Side-entry connections | Suitable for shallow spaces; maintain manufacturer-specified clearance above flooring and below shelves. | Balanced compromise between depth, output, and water volume; performs best with proper hydraulic balancing. | Apartments and compact rooms |
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