Contact

Write in English, French or German and the reply comes back in the same language, from a native speaker. An engineer takes the first call, and a written proposal follows within five working days.

Describe your project in two minutes

The fixed answers are not there to chop your enquiry into boxes: they save us calling you back to ask which canton you are in and what heats the building. Only five fields are required; the rest is what makes the first quote accurate.

Your project

Your enquiry is about *
The building *

The municipality sets the canton, and with it the rules and the subsidies that apply. Add the street if you like.

Current heating

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

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. Written quote within five working days. 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 him. 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, 08.00 to 12.00 and 13.30 to 17.00. Outside those hours, leave a message or write, and an engineer will call you back on the next working day.

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 and Fribourg. 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 Valais day to day, and Neuchâtel, Jura and the canton of Bern as well. If your building is further away, say so: a study, a heat load calculation or a permit application does not depend on distance, whereas site supervision does, and we agree the arrangement in the proposal.

Tell us where the building is and what you have to decide, and an engineer will reply. Write to us.

Updated: 2026-09-22