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Contact

Write in English, French or German and the reply comes back in the same language. French, Swiss German and English are mother tongues at the practice; we also work in standard German. An engineer takes the first call.

Describe your project in two minutes

The fixed answers save us asking you which canton you are in and what heats the building. Only the fields marked with an asterisk are required; the rest helps the quote land right first time. Your enquiry and any documents you send us for it commit you to nothing: only signing our written quote counts as an order.

Your project

Your enquiry is about *
The building *

The municipality sets the canton, and with it the rules and the subsidies that apply. We work in the cantons of Vaud, Geneva and Fribourg, and in the Chablais region of Valais. Add the street if you like.

Current heating (you can pick several)

Whatever you have to hand: number of dwellings, floor area, year built, age of the boiler.

For a building project: competition, preliminary design, permit filed; phases required, e.g. 31 to 53; any deadline.

What you expect from us

You can pick several.

Where are you in the process?

Anything that does not fit the boxes above.

So we can reply

You are

For the questions that a two-minute call settles.

Language of the reply *

Fields marked with an asterisk are required.

An engineer replies on working days, and you get an immediate acknowledgement by e-mail. You can attach your documents by simply replying to that acknowledgement.

Or write and call directly

The form is only a shortcut. If you would rather write it yourself, info@mz-e.ch arrives in the same place. Five lines are enough, and the more precise they are, the closer the first proposal will be:

  • the municipality the building is in, because it determines the canton and therefore the rules and the subsidies that apply;
  • the type of building: house, condominium (PPE), rented apartment building, public building, shop or offices;
  • the year it was built and the heating system it has now, even approximately;
  • what you are expecting from us: a costed replacement decision, a permit application, a review of an installer's quotation, or a full appointment;
  • your deadline, if you have one.

Attach whatever you have to hand: a heating bill, an installer's quotation, a drawing, a photograph of the plant room. None of it is needed to get an answer. If you used the form, just reply to the acknowledgement to attach your documents.

Either way the enquiry arrives at info@mz-e.ch and an engineer reads it — there is no front desk between you and the engineer. Both this site and the mailbox are hosted in Switzerland.

By telephone or e-mail

+41 79 257 46 00 · info@mz-e.ch

Monday to Friday, 8 a.m. to 12 noon and 1.30 to 5 p.m. Outside those hours, leave a message or write, and an engineer will get back to you.

Offices

Head office. MZ engineering Sàrl, Rue de la Sapelle 11, 1058 Villars-Tiercelin. It covers the Gros-de-Vaud, Lausanne, the Riviera, northern Vaud, Fribourg and the Chablais. Find it on a map

Branch office. Chemin de Marly 13, 1263 Crassier. It covers La Côte, from Coppet to Morges, and the canton of Geneva. Find it on a map

New premises are being fitted out, with a meeting room for project meetings and condominium general meetings.

Where we work

Vaud, Geneva, Fribourg, and the Chablais region of Valais as far as Saint-Maurice. What depends on distance is site supervision rather than the study or the permit application, and we agree the arrangement in the proposal.

Tell us the municipality of the building, what it is used for and what you have to decide. An engineer replies.

Request a quoteCall us +41 79 257 46 00

Updated: 2026-11-05