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400mm Wide Vertical Radiators

We have 24 vertical radiators 400mm wide in stock from Carisa, Ethiant and Reina, from 1170mm to 1800mm high, priced from £135 to £2,101.06 with heat outputs from 2,084 to 5,176 BTU/hr (ΔT50).

Width is what a radiator has to fit; height and panel depth are what give it output. If the wall only allows 400mm, go taller or choose a double-panel model rather than settling for less heat. Every model is in stock for free delivery to mainland England and Wales, and each product page shows the certified heat output for every size so you can match it to your room with our BTU calculator.

400mm Wide Vertical Radiators in stock

Compare every 400mm wide vertical radiator in stock

Model Finishes Sizes in this group Heat output (BTU/hr, ΔT50) From
Flat Panel Single Vertical Radiator 1600 Height In Anthracite Anthracite 1600 × 420mm 2,442 £135
Flat Panel Single Vertical Radiator 1800mm White 1800 × 420mm 2,705 £142.20
Neva Vertical Mild Steel Radiator Anthracite, White 1800 × 413mm, 1500 × 413mm 2,526–4,576 £147.60
Flat Panel Double Vertical Radiator 1800mm Black, White 1800 × 420mm 4,168 £201.60
Flat Panel Double Vertical Radiator 1800 Height In Anthracite Anthracite 1800 × 420mm 4,168 £201.60
Traditional 2 Column Vertical Radiator 1800mm Black, White 1800 × 425mm 3,806 £201.95
Traditional 3 Column Horizontal Radiators 1500 Height White 1500 × 425mm 4,353 £211.62
Traditional 3 Column Vertical Radiator 1800mm Black, White 1800 × 425mm 5,176 £226.80
Slimline Vertical Mild Steel Radiator Anthracite, White 1770 × 400mm, 1470 × 400mm, 1170 × 400mm 2,084–3,152 £243.54
Colona Vertical Radiator RAL Coloured Radiator Ral Colour 1500 × 380mm 2,867 £350.03
Carisa Angers Vertical Aluminium Designer Radiator Textured Anthracite, Textured White 1800 × 395mm 2,611 £309.50
Carisa Chambord Vertical Aluminium Designer Radiator Textured Anthracite, Textured White 1800 × 395mm 2,638 £309.50
Carisa Angers Double Vertical Aluminium Designer Radiator Textured Anthracite, Textured White 1800 × 395mm 3,664 £373.49
Carisa Chambord Double Vertical Aluminium Designer Radiator Textured Anthracite, Textured White 1800 × 395mm 3,664 £373.49
Carisa Mack Vertical Aluminium Designer Radiator Textured Anthracite, Textured White 1800 × 395mm 3,066 £386.14
Carisa Plata Vertical Aluminium Designer Radiator Textured Anthracite, Textured White 1800 × 420mm 2,762 £446.40
Carisa Motion Vertical Aluminium Designer Radiator Textured Anthracite, Textured White 1800 × 390mm 3,105 £505.92
Carisa Sophia Vertical Aluminium Designer Radiator Textured Black, Textured White 1800 × 415mm 3,014 £534.19
Carisa Plata Double Vertical Aluminium Designer Radiator Textured Anthracite, Textured White 1800 × 420mm 3,826 £542.38
Carisa Mayra Vertical Steel Designer Radiator Chrome 1800 × 420mm 5,137 £559.49
Carisa Nixie Vertical Aluminium Designer Radiator Textured Black, Textured White 1800 × 415mm 3,321 £656.95
Carisa Otto Vertical Aluminium Designer Radiator Textured Anthracite, Textured White 1800 × 395mm 4,101 £684.48
Carisa Dora Vertical Steel Designer Radiator Matt Copper, Textured Light Grey 1800 × 390mm 3,314 £773.02
Carisa Mistral Vertical Stainless Steel Designer Radiator Mirror Polished Stainless Steel, Satin Polished Stainless Steel 1800 × 385mm 2,325 £1,500.65

Questions about 400mm wide vertical radiators

How much heat does a 400mm wide vertical radiator give out?

Between 2,084 and 5,176 BTU/hr at ΔT50 across the 24 models on this page. The highest output here is the Traditional 3 Column Vertical Radiator 1800mm at 5,176 BTU/hr (1,518 W). All figures are the manufacturers’ certified outputs to EN 442, quoted at ΔT50 — the UK standard for sizing central-heating radiators.

Which 400mm wide vertical radiator is the best value for heat?

On heat per pound it is the Traditional 3 Column Vertical Radiator 1800mm: 5,176 BTU/hr for £226.80, about 23 BTU for every £1. The cheapest model on the page starts at £135.

What size room will it heat?

It depends on the model — the range on this page runs from a bedroom, home office or small kitchen at 2,084 BTU/hr up to a large living room or an open-plan kitchen-diner at 5,176 BTU/hr. A well-insulated modern room needs far less than an older one with single glazing and an outside wall, so use our BTU calculator with your room’s measurements before you choose.

What colours and finishes are available?

In this group we have 18 in white, 13 in anthracite, 5 in black, 1 in chrome, 1 in raw metal & stainless steel. Colour is chosen as a finish option on the product page.

What else do I need to fit it?

A pair of radiator valves (a thermostatic set is the usual choice) — see our valves and accessories. Wall brackets are supplied with every radiator, and column radiators in this group can be fitted with feet where the wall will not take the full weight. Delivery to mainland England and Wales is free.

Related sizes and ranges

350mm Wide Vertical Radiators · 450mm Wide Vertical Radiators · 1500 x 400mm Vertical Radiators · 1800 x 400mm Vertical Radiators

Back to Radiators by size.