{"id":416,"date":"2026-09-09T11:13:23","date_gmt":"2026-09-09T11:13:23","guid":{"rendered":"https:\/\/carrera.uptoo.top\/konvektor-chy-radiator\/"},"modified":"2026-10-25T07:13:34","modified_gmt":"2026-10-25T07:13:34","slug":"konvektor-chy-radiator","status":"publish","type":"page","link":"https:\/\/carrera.uptoo.top\/en\/haidy\/konvektor-chy-radiator\/","title":{"rendered":"A convector or a radiator under the window"},"content":{"rendered":"
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Home<\/a>\/<\/span>Guides<\/a>\/<\/span>Convector or radiator<\/b><\/div>\n

A convector or a radiator under the window<\/h1>
In brief:<\/b> Short answer: if the glazing goes to the floor, there is nowhere to hang a radiator, and an in-floor convector in the screed works; and when the screed is already poured, a floor-standing FRH or a skirting BR. With an ordinary window with a sill, a radiator is simpler to install and no worse: the choice is dictated by geometry and the coolant mode, not by \u201cwhich is better in general\u201d.<\/div><\/div>\n
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Both devices give the room the heat of the water from the circuit, and by an ordinary window a resident won’t feel the difference. It appears in three places: whether there is somewhere to put the unit, what happens to the output at a low supply, and whether the floor can still be touched.<\/p>\n

Where they really differ<\/h2>\n
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Criterion<\/th>In-floor convector<\/th>Radiator<\/th><\/tr>\n
Floor-to-ceiling glazing<\/td>The casing lies in the screed under the glass, grille on top<\/td>There is no wall under the glass, nowhere to hang it<\/td><\/tr>\n
Appearance<\/td>Only the grille is visible<\/td>The device is on the wall<\/td><\/tr>\n
Installation<\/td>Set into the screed at the design stage<\/td>Hung at any time<\/td><\/tr>\n
Cold from the glass<\/td>A curtain along the glass, if the length is close to its width<\/td>Heats where it hangs<\/td><\/tr>\n
Finished floor<\/td>Too late: the screed can’t be redone<\/td>Can be installed<\/td><\/tr>\n
Low supply, 45\/35<\/td>Output without a fan drops threefold<\/td>Also drops: the physics is the same<\/td><\/tr>\n <\/table><\/div>\n

When a radiator is the right choice<\/h2>\n

An ordinary window with a sill, the renovation is done, nobody is going to raise the floor, the pipes are easily run to the wall. In this case a radiator does the same job more simply, and we won’t talk you into an in-floor convector. There’s also an argument in its favour: a radiator gives off part of its heat as radiation, and this is felt when a person sits nearby for a long time.<\/p>\n

Floor-to-ceiling glass, but the screed is already poured<\/h2>\n

A radiator is not the only option here. Carrera has a floor-standing FRH<\/a> that is placed right in front of the glass, and a skirting BR<\/a> along the wall. The principle is the same, a curtain along the glass, but the floor doesn’t need to be opened up.<\/p>\n

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Device<\/th>Width \u00d7 height, mm<\/th>W per 1000 mm, 45\/35<\/th><\/tr>\n
M\/C 65, in the screed<\/td>230 \u00d7 65<\/td>82<\/td><\/tr>\n
S\/C 90, in the screed<\/td>230 \u00d7 90<\/td>101<\/td><\/tr>\n
FRH, on the floor<\/td>148 \u00d7 175<\/td>123<\/td><\/tr>\n
FR2H, on the floor<\/td>290 \u00d7 175<\/td>169<\/td><\/tr>\n
BR 18, skirting<\/td>60 \u00d7 180<\/td>77<\/td><\/tr>\n
BR 21, skirting<\/td>60 \u00d7 210<\/td>97<\/td><\/tr>\n <\/table><\/div>\n

All of this is natural convection. One mode is taken, 45\/35, because in our tables in-floor units are given for 85\/75 and 65\/55, while floor-standing and skirting ones for 90\/70 and 70\/50: the \u201cper metre\u201d catalogue figures can’t be placed side by side. At 45\/35 the spread is 77\u2013169 W, so the type is chosen by location and appearance, and the output is matched by length.<\/p>\n

Where people go wrong and when a convector is not suitable<\/h2>\n