Lighting Colour Temperature Questions Checklist

Note which rooms in your home feel cold or clinical in the evening, and whether that impression changes when only the lamps are on.

If a room warms up when the ceiling light goes off, the character of the light is the cause rather than the decoration.

Record which rooms you find pleasant after dark, and photograph them, since a room you already like is the most useful reference you own.

An example from your own home communicates more to a supplier than any adjective, and it takes moments to capture.

Note where two lights in the same room already look different from each other, and whether one of them was replaced at some point.

Most mismatches in homes arrive one replacement at a time, and nobody notices until they are side by side.

Record any place outside your home where you found the light unpleasant, and describe what you disliked in plain words.

Dislikes are easier to describe accurately than preferences, and they narrow the field just as effectively.

Write your descriptions in ordinary language such as warm, yellowish, harsh or flat, rather than reaching for terms you are not confident about.

An accurate ordinary word is more useful than a technical one used loosely, which sends the conversation off in the wrong direction.

Note whether your feeling about a room changed after any lamp was replaced, since that is direct evidence about what you prefer.

A change you reacted to is the strongest evidence available, and it is usually forgotten because it happened gradually.

Look at every sample in the room it is meant for after dark, under the light that room will have, and not only by daylight.

Rooms used mainly in the evening are almost always chosen by daylight, which is the one condition they will rarely be seen in.

Note that a finish or a fitting seen in a showroom is being shown under lighting chosen to present it well, which is a different job from representing it.

Bearing this in mind tends to prevent a good deal of disappointment when finishes are being selected.

What a finish will look like in your rooms is something to test there, and any question about batch or sheen belongs with the supplier.

Note where a warm-toned finish is intended, since cooler light tends to drain such surfaces of the quality that was chosen for them.

The relationship works in both directions, and stating the intention lets both decisions be made together.

Record where a cool or grey-toned finish is planned, and check how it reads under a warmer light before deciding either.

Cool finishes under warm light can look muddy in a way that is obvious in the room and invisible on a screen.

Note where timber, stone or another natural material is being used, and look at it under the intended light before the order is placed.

Natural materials shift noticeably with the character of the light, and they are usually the most difficult decision to reverse.

Keep the samples with the notes about the light they were judged under, so the two are read together rather than remembered separately.

Sample decisions are revisited later, and by then nobody remembers under what conditions the first judgement was made.

For each room, list which fittings can be seen at the same moment, including anything visible through an opening into the next space.

Consistency only matters where things are compared, which makes the sightline the unit to work with rather than the room.

Note where one space opens into another and decide whether you want the light in both to feel the same or deliberately different.

Both answers can work, but the decision needs making rather than emerging from two separate conversations.

Record what is seen from the hallway through open doors, since circulation spaces are where mismatches are noticed most often.

A hall is looked along rather than occupied, which makes every doorway a side-by-side comparison.

Note where different kinds of fitting will share one room, and raise consistency between them as a question rather than assuming it.

Whether different fittings and lamps will match in appearance is a matter for the supplier to confirm, not something to assume from a description.

Record where fittings for one room are being bought from different places, since matching across sources is much harder than within one.

This is one of the most common causes of an uneven room and is entirely avoidable by raising it in advance.

Ask whether you can see the intended lamps working alongside each other before committing, rather than judging each one separately.

Side-by-side comparison is generally the more reliable test, and viewings on separate occasions tell you much less than people expect.

Decide and record whether you want the same character of light throughout the property or something different in particular rooms.

This is the first decision to make, because everything else in the discussion follows from it.

Note which rooms are used first thing in the morning and whether you want the light there to feel different from the evening.

The same room can want two quite different characters, which is a control question as much as a lamp question.

Record which spaces are used for concentrated work, and note whether you find warmer or cooler light easier there.

Preferences vary genuinely between people, and your own experience is better evidence than any general claim.

Note which rooms are used mainly for settling in the evening, and whether anything currently makes them feel less restful than you want.

Rooms used to wind down are where the character of light is felt most strongly and complained about most vaguely.

Ask whether the appearance of the light changes as it is dimmed, and record the answer against each arrangement you are considering.

How a lamp behaves in appearance as it is dimmed is a question for the supplier and a suitably qualified electrician for that equipment.

Record which spaces are purely practical, such as a store or a utility area, and whether you want them treated differently from the rest.

Practical rooms often want something different, and deciding that deliberately avoids a compromise across the whole property.

Look at a familiar face under any light you are considering, since faces are the thing everyone judges most accurately without thinking.

You will notice a face looking wrong long before you can describe what is wrong with the light.

Note how food looks under the lighting where it is prepared and where it is eaten, and whether the two differ noticeably.

Preparation and eating are often lit quite differently, and the difference is most obvious with anything on a plate.

Note the few places where telling one colour from another actually matters, such as a making or mending position, or a surface where samples are compared.

This is a practical requirement rather than an aesthetic one, and it applies in a small number of specific places.

Ask the supplier what they can tell you about how well a light source shows colours, and record the answer rather than paraphrasing it.

How well any light source renders colour is described by the maker and the supplier, and their information should be obtained rather than assumed.

Look at any fabric you are choosing under the intended light, since textiles shift more visibly than most surfaces.

Upholstery is difficult to reverse once made up, and it is almost always chosen under daylight or showroom light.

Note where anyone gets ready in front of a mirror and whether the light there lets them see themselves accurately.

If that mirror is in a bathroom or shower room, carry the observation to a suitably qualified electrician and let them decide what is possible there.

Ask for a written record of what has been fitted in each position, and keep it somewhere it will be found by whoever needs it later.

Without this, replacements are chosen by guesswork and the room drifts out of step one lamp at a time.

What may be fitted as a replacement in any position should be confirmed with the supplier and a suitably qualified electrician.

Photograph the packaging of any lamp before it is discarded, including whatever information is printed on it.

It takes moments and is the simplest safeguard available against a room drifting out of step later, yet almost nobody does it.

Consider obtaining spares at the same time as the originals, and note where you will store them so they can be found.

Matching tends to become harder as time passes, and spares obtained alongside the originals are often the simplest answer.

Record who will be replacing lamps and whether they will know what to look for, particularly if it is not you.

The person holding the ladder is rarely the person who chose the original, which is where most mismatches begin.

Ask whether the appearance of a light source is expected to change as it ages, and what you should watch for.

Any expectation about how a light source behaves over its life should come from the maker or supplier rather than from general assumption.

File the lamp record with the rest of your room notes rather than separately, so it is found when somebody is looking for it.

Paperwork stored on its own is paperwork nobody finds at the moment it is needed.

Bring your photographs and descriptions rather than a conclusion about what should be used, so the advice is not closed off before it starts.

An owner arriving with a specification receives agreement, while an owner arriving with observations receives expertise.

Ask whether you can see any lamp or fitting working before committing to it, and in conditions closer to your own room than a showroom.

Seeing something working is usually what settles the question, and asking for it is a reasonable request to make.

Ask what the supplier can tell you about consistency between one item and the next of the same kind, and record what they say.

Consistency between items and between batches is a matter for the supplier to confirm and should not be assumed from a description.

Ask what changes about the appearance of the light when it is used with the control arrangement being proposed for that room.

Lamps and controls are usually discussed separately even though the result is what the household actually sees.

Ask directly what the supplier cannot tell you, since knowing where the uncertainty lies is more useful than a confident general answer.

The gaps in the available information are exactly where a trial in your own room is worth arranging.

Write down the answers in the words you were given and note who gave them, rather than summarising them from memory afterwards.

Paraphrased advice loses precisely the qualifications that made it accurate in the first place.