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Which form of heating gives the most even temperature

Published: 04/27/2023 19:30:15
Categories: Installer training , Radiant heating and cooling ceilings

Even means two things

The temperature difference between floor and ceiling, called the vertical gradient, and the difference between two points in the room at the same height. A system can be good on one and mediocre on the other, and both are measured separately.

The vertical gradient

A convection system produces warm air that rises and gathers under the ceiling. The higher the room, the greater the difference between ankles and head, and it is that difference the occupant feels as permanent discomfort.

The horizontal difference

A single emitter set against a wall creates a warm zone nearby and a cold zone opposite. Adding appliances reduces the difference without removing it, because the problem comes from the source being concentrated.

Why a large surface settles both

A radiant ceiling occupies the whole area of the room and emits downwards. There is no horizontal hot spot and no build-up of warm air above, since air is not the vehicle of the transfer.

What remains unavoidable

A glazed bay stays colder than the walls, whatever the emitter. The evenness of a system does not make up for a weak surface, and the two subjects are dealt with together rather than one against the other.

How to check it at home

A thermometer at floor level and one at head height, in the same room, on a cold day. Two readings are enough to rank a system, and they say more than any sales argument.

The principle is developed on the inspired by the sun page, and the comparison on the underfloor heating page.

Heating that gives an even temperature

You are swimming in the sea. The water is pleasant, and then suddenly you cross into a cold patch.

Not enjoyable, is it?

That is exactly what happens in most homes.

Moving around your own house, do you feel that same discomfort?

The radiant ceiling: even warmth

Ask yourself the question: does my heating genuinely give an even warmth?

Take an example. You are lying on your bed, sitting on the sofa, at the table or cooking.

Which form of heating is able to follow you wherever you happen to be?

Like spring sunshine on a cloudless day, a radiant ceiling emits its heat across the whole of the ceiling surface, with nothing blocking it.

Warmth that is spread out and steady

If you are wondering whether your legs will be cold under the table, they will not. Anyone living with a radiant ceiling will tell you the same.

The infrared heat from the ceiling is absorbed by walls, floors and furniture, which then radiate it back in turn.

Anyone who cares about wellbeing and about comfort uses the one surface built for radiating heat: the ceiling.

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