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

With lukewarm-water emitters, every watt counts. On site, oversizing can secure comfort during cold snaps, but it also means more bulk, more inertia, and sometimes a network that needs adjusting. By mastering power calculations, flow temperature, and balancing, you size things right and avoid callbacks.
5 min read

Your client has a fireplace that heats poorly and burns through fuel. By modernizing it with a pellet appliance, you gain in comfort, consistency, and cleanliness, without starting from scratch. With a well-prepared installation, you secure the flue, simplify daily use, and add value to the job in your clients' eyes.
5 min read

In renovation, the junctions between walls, floors, and window openings often make the difference between a "clean" job and one that comes back to haunt you six months later. By getting these details right from the site visit onward and coordinating them across your trades (insulation, airtightness, finishes), you secure performance, comfort, and above all your own peace of mind. Here we go straight to the point — the checks to run and the mistakes that cost dearly.
5 min read

When your rooms don't reach temperature or the boiler runs too much, it's often a badly set output, not a hardware problem. By starting from room-by-room heat loss, you ground your numbers in the reality of the job, then match the emitter to the need without oversizing. The result: customers who feel the difference from the very first start-up.
5 min read

In renovation, every kilo counts. When a screed isn't an option or ceiling heights are tight, a lightweight solution saves time and limits rework, without sacrificing floor comfort. It's up to you to run a cleaner, faster job that's compatible with many substrates, to keep your schedule and reassure the customer from the first site visit.
6 min read

Between a DPE, a quote and the reality of the job site, you're often the one who has to decide quickly, and correctly. A well-built energy simulation helps you prioritize the right measures, estimate the gains and secure your choices before opening up a wall. Here, we're talking about a tool designed to save you time, without drowning you in technical detail.
5 min read

A hot water tank is often unremarkable... until the day the bill climbs or the shower turns lukewarm. As an installer, what you mainly need is simple benchmarks to judge whether a fault is worth repairing or whether the unit has reached the end of the road. The right signals are there, and they help you avoid emergency call-outs as much as callbacks.
5 min read

When a client wants to understand "how much heating will this take" and how much it will cost, everything starts from a simple figure: degree-hours. By linking them to your building (insulation, ventilation, gains), you estimate heating needs faster and secure the sizing, without overselling or undersizing. Handy for backing up a quote and comparing renovation scenarios, clear from the first appointment.
6 min read

On the ground, limescale shows up fast. Flow rates dropping, heat exchangers scaling up, clients coming back. Between the promises of magnetic devices and the reality of a well-tuned installation, what you really need is facts, clear limits and good habits for advising clients without exposing yourself.
6 min read

On site, your clients want something concrete. They expect a quick jump in comfort and a lower bill, without multiplying job sites or delays. By combining a heat pump with good insulation, you offer the easiest duo to sell, and often the most effective one, when the diagnosis is done right.
5 min read

When you're looking to save space and simplify a renovation, a solution that combines ventilation and hot water production can really make a difference. The principle is clever: recover calories from extracted air to heat water, while ensuring regular air renewal. For you, as a tradesperson, it's a concrete way to offer a more coherent package, with visible gains right from commissioning.
5 min read

Between a commercial kitchen and a home kitchen, extraction requirements have nothing in common. For you, the tradesperson, properly distinguishing air volumes, hygiene and safety constraints, and grease management means avoiding undersized or overly noisy installations. The payoff: cleaner, more compliant jobs, and clients who notice the difference immediately.
5 min read
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