WTO notification · TBT
MexicoProposed measure, may since have been adopted
Draft Official Mexican Standard PROY-NOM-040-ENER-2025, Integrated efficiency for electric water heaters. Specifications, test methods and labeling.
Proyecto de Norma Oficial Mexicana PROY-NOM-040-ENER-2025, Eficiencia integrada para calentadores de agua eléctricos. Especificaciones, métodos de prueba y etiquetado.
Mexico notified this proposed TBT measure to the WTO on 2 April 2026. The comment period closed on 1 June 2026.
Expodite puts notifications like this one in your Updates centre, matched to the HS codes of your products and the markets you export to. Opens the requirements check for Mexico and HS 851610 in your Expodite account.
Source: WTO ePing (opens in a new tab). Summaries by Expodite, which is independent of the WTO.
Published here:
Applies to electric water heaters for domestic and commercial use, storage or instantaneous type, that operate with electrical energy and provide only hot water in liquid phase
Aplica a los calentadores de agua eléctrica para uso doméstico y comercial tipo almacenamiento o instantáneos que funcionen con energía eléctrica y proporcionen únicamente agua caliente en fase liquida
The comment period closed on 1 June 2026. You can still raise concerns about the measure with your country's WTO TBT enquiry point, quoting the document symbol G/TBT/N/MEX/560; it can take them up with Mexico.
Find your country's enquiry point on WTO ePing (opens in a new tab)The notified draft Mexican Official Standard establishes the minimum integrated efficiency levels that are to be met by electric water heaters for household and commercial use, and the test methods to be used to verify compliance, and defines the relevant user information labelling requirements.
Expodite writes its summary from the official record. The notification and the documents it notifies are on the WTO's own websites.
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Expodite matches each notification to the markets you export to and the HS codes of your products, and puts the ones that concern you in your Updates centre, with the date comments close.