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KI-Symbolbild: Pendelleuchte mit gläsernem Schirm und warmem Licht über einem Holztisch mit Vase und Stühlen in einem Esszimmer.
Practical article Renovation & energy Germany

New LED lamps on the existing dimmer: Assign the specific combination before buying multiple items

When replacing with LEDs, have the exact lamp, the existing dimmer, number of lamps and desired dimming range assigned correctly before buying multiple items.

Automatically translated – the German version is legally binding. Show original (German)

Published
19 Oct 2026
Research as of
17 Oct 2026
Applies to
Germany
For whom
Owners & landlords
Article ID
WX26-P08-0068

The old lamps are to be replaced by LEDs, and the existing wall dimmer should remain if possible. A package in the shop says “dimmable”. For the planned multiple purchase the crucial assignment is still missing: which specific lamp is to be operated with which dimmer and in which existing installation?

Consider the pair rather than just the single product

LEDVANCE provides dimmer compatibility information for its lamps. A published PAR16 list distinguishes exact lamp types and tested dimmers; its legend takes into account both the number of lamps and the dimming range. [DIMMER] This illustrates a product-related test and is not a recommendation for a brand or a specific combination.

Our editorial recommendation: For the consultation, first note which existing lighting is to be replaced. Look for documentation on the installed dimmer and the luminaires. If the model designation is missing, have the assignment clarified by a professional. This does not require household electrical covers to be opened.

Name the new variant precisely

Please request feedback on the actually desired lamp with the exact product identifier. A similar name or the same base is not a sufficient assignment to a specific manufacturer list. Also clarify whether the particular new variant is intended at all for the intended type of control.

The existing number of lamps and the desired everyday use belong in the enquiry: Should the light only be slightly reduced or significantly dimmed for a specific application? Have it explained what can be confirmed for the specific combination and where limits remain. A table colour without the correct row, column and legend is not a usable answer.

Do not silently update old lists

The manufacturer list read here explicitly dates from August 2023. It is used only as an example of how specifically such statements are assigned. No model contained therein is recommended here as suitable or available in the year 2026. Ask for the current information on the actual product version for your purchase.

If a combination is missing from an overview, its assessment remains open. Do not invent from that either an approval or a blanket prohibition. The appropriate professional advice must explain what other information or testing is required for the concrete selection.

Define the replacement scope with reason

In the fictitious example a household wishes to order all spots at once. It only knows the brand of the existing control. It first procures the exact assignment and has the planned lamp fitting and number assessed. Afterwards it can decide which coordinated solution should be commissioned or purchased.

If conspicuous behaviour has already occurred, no electrical cause will be diagnosed on the basis of this article. The professional enquiry describes the observed condition and the known products. The benefit of this preparation lies before the purchase: an unassigned dimmability claim will not be substituted for a comprehensible system decision.

Sources and context

Created with the help of AI and editorially reviewed. General guidance only; not individual legal, tax or financial advice. Errors and later changes are possible.