News
Regulation, field practice and tools: our analysis to help renovation professionals sell and deliver energy retrofits.

When mechanical ventilation is undersized, it usually shows up on the job site. Complaints about air that's too dry, odours coming back, noisy vents, and consumption climbing for no reason. By setting the right flow rate room by room, you secure comfort and performance without drowning in formulas.
5 min read

When a workshop, a laundry, or a food-processing plant needs reliable heat, every kWh counts. Today, you can offer a solution that reaches high temperatures while significantly cutting emissions, without overhauling the whole installation. By carefully handling sizing, the heat source and the connections, you secure the process and gain credibility from the quote stage onward.
5 min read

On site, a glazed opening is no longer chosen just for looking good or insulating well. Your clients want to feel safe, without losing winter comfort or blowing the budget. By mastering the right resistance levels and the installation points that make the difference, you secure the opening while keeping a clean, durable, high-performing envelope.
5 min read

In a multi-unit building, a reliable estimate of hot water production often hinges on a handful of simple data points. As a tradesperson, you save time and secure the sizing by starting from actual usage, peak draw-off, and storage volumes, not from gut-feel figures. This is the foundation for avoiding callbacks, over-consumption, and jobs that go off the rails.
5 min read

When prices spike, you're the one who has to keep the job on track. Between irregular deliveries, variable quality and clients who compare everything, securing supply becomes a real lever for protecting your margins. The right reflexes, contracts, storage, choosing suppliers, often make the difference from the first winter.
5 min read

When a slab extends outside the heated envelope, heat escapes and your clients feel it immediately. In renovation, your real lever is deciding quickly between correcting it with continuous insulation or a clean structural break, depending on access, structure and finishes. With a clear method, you limit callbacks, secure the job site and gain performance without unnecessary complications.
5 min read

A poorly fitted loft hatch, an unsealed socket, a duct penetration left untreated. And you lose comfort, performance, and sometimes credibility on the job. With a few good installation and checking habits, you can track down these invisible leaks and deliver a clean, tidy renovation with no nasty surprises at the test.
5 min read

On a job site, the right choice of fluid circulating through the pipes can be the difference between a stable installation and callbacks in the middle of winter. Between freeze risk, maintenance constraints and compatibility with the heat pump or solar collectors, you need a simple, clear decision. Here's the rundown, no jargon, to keep your installs and settings safe.
5 min read

When a client tells you that traffic noise "comes right into" the living room, they expect a simple, clear answer. Between acoustic bridges, worn-out windows, and forgotten joints, leaks often come down to details you can fix quickly, without an endless job. Starting from a good diagnosis and clean execution, you turn a noisy home into a pleasant room, and you secure your result.
5 min read

With a gas boiler, hot-water comfort isn't just about power output, but about choosing the right production mode. Instantaneous, micro-storage or tank — each solution has its limits depending on the number of draw-off points, household habits and available space. As a tradesperson, you save time on your quotes by asking the right questions upfront.
5 min read

With hot water production, a breakdown never happens at a good time. With a simple inspection routine, you secure performance, avoid overheating, and extend the life of the tank, circulators, and collectors. As a tradesperson, a few checks well spaced out over the year often make the difference between a reliable system and repeat warranty callbacks.
5 min read

On site, damaged insulation quickly turns into an unhappy client and costly rework. By identifying entry points from the initial visit and choosing the right materials and protections, you secure performance over time, without loading up the quote. The result is a cleaner renovation, and insulation that actually holds up.
5 min read
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