Certified NF, Prelem carries out the implementation of the Energy Performance of residential and tertiary buildings.

How to heat, ventilate, lighten a residential or tertiary building while limiting as much as possible the energy loss and the consumption of all services ?
Prelem, BET Thermique et Fluides, takes action in the early stages of the project in order to optimize the energy efficiency of the building in compliance with french and international  thermal and environmental regulations.
Through our role as advisor and guide, we suggest technical solutions as well as innovative and economical construction methods. Most french developers trust us regardless of the project’s size.

Our skills make the technique more inconspicuous.

• Mechanical and Public Health systems: heating, ventilation, air conditioning and plumbing
• Electrical systems: power distribution, and small power
• Renewable energies: solar panels, photovoltaic panels, biomass, district heating, cogeneration, wind turbines
• Fire systems

Preliminary designs, BBIO attestation for the building permit (French Regulation)... Prelem’s action start as soon as the first drafts are drawn, alongside the architect and the project manager.

DCE (Dossier de Consultation des Entreprises) - Tender Documents

• CCTP (Cahier des Clauses Techniques Particulières) - Special Technical Specification
• DPGF - decomposition of the Lump and fixed Price
• Technical drawings of all services, layouts and schematics
• Prescribed thermal calculation 
• Technical sales plans

Relation with utilities

Prelem takes care of the connections with the different utilities: drainage, main water supply, power distribution, gas, telecoms, optical fibre, district heating network…

Offers analysis report

Prelem takes care of the comparative analysis, verifies the offers of the building services contractors and establishes the tender document.

Site visits

As part of the inspection of the work, Prelem is present at each key stage of the construction site and at the handover.

Audits after handover

After the site handover, Prelem verifies the proper functioning of the technical facilities thanks to adapted measuring instruments: thermal camera, thermo-anemometer, etc.

100 DCE - Tender issues
6,000 housing studied
40,000 sqm of tertiary area studied