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

On a job site, the real dilemma is the right level of intervention, not the product. Between replacing the whole frame or only touching the glazing, you're playing on three concrete levers: performance, installation time, and client budget. With the right diagnostic method, you secure the result, avoid rework, and gain credibility right from the quote.
5 min read

When a client hesitates between heating and insulation, it's often the right moment to propose a winning duo. By combining a properly sized heat pump with external wall insulation, you secure comfort, reduce heat demand, and avoid an oversized unit that disappoints in use. With the right site method, you turn a vague request into a clear, costed, reassuring plan.
5 min read

When a client wants extra square metres without pushing out the walls, the space under the roof is often the best lever. Your value lies in securing comfort and performance by handling insulation, airtightness and ventilation from the design stage. With a clear method and the right material choices, you turn an awkward volume into genuinely liveable floor space, with no bad surprises on site.
6 min read

On a ground-source heat pump job, horizontal ground loops can make all the difference when the plot allows it. You gain in simplicity of installation, with work that's often easier to plan than a borehole, while giving your clients a stable, discreet solution. The idea is to secure performance without complicating your site logistics.
5 min read

When the goal is fast, stable hot water with no tank, installation quality makes all the difference. As a tradesperson, you control the points that prevent temperature swings and callbacks: real flow rate, pressure drop, scaling, settings. Here we go straight to practice, so you can size accurately and install cleanly on the first visit.
5 min read

On site, it's not the technical work that wastes time, it's hesitation at the moment of deciding. When you set a clear framework from the start, you secure the quote, align the client, and avoid the backtracking that eats into your margins. Here's a simple method for choosing the right criteria, in the right order, and moving forward without ambiguity.
5 min read

On an energy renovation site, every oversight costs time, and sometimes a grant. With a well-maintained digital model, you visualise the existing building, coordinate the trades and lock in your insulation and equipment choices before starting. The result is fewer back-and-forths, more accurate quotes, and a client who finally understands what you are proposing.
5 min read

When you're preparing an insulation job, everything often hinges on one simple question: what's actually on the other side of each wall — outside, inside, the ground, or a neighbour? Getting this right avoids wrong thicknesses, good materials installed in the wrong place, and quotes that go off track. Clarifying these contacts during the site visit from the start protects both the thermal result and the client relationship.
5 min read

When a heat pump runs year-round, well-executed maintenance avoids silly breakdowns, secures performance, and protects your reputation on site. Between regulatory obligations, leak checks, and useful adjustments, it's well worth setting up a simple routine and tracking it properly. That saves time and leaves less room for callbacks.
5 min read

Pairing a solar thermal water heater with a gas backup is a simple way to secure comfort without oversizing the system. As a tradesperson, what you mainly need is accurate sizing, a clear hydraulic diagram and good control settings to avoid unnecessary cycling. Here's a rundown of the choices that matter on site, for a solution that's reliable and easy to maintain.
5 min read

On site, nothing beats an actual measurement to settle whether a wall is holding up or dragging down the whole work package. With a heat flux meter, you get a concrete diagnosis, without any dismantling, to secure your insulation choices, your quotes, and your results. In a few hours to a few days, you turn a hunch into usable evidence.
6 min read

When you size insulation or a heat pump, a small coefficient can tip the result. Applied correctly, it helps you estimate heat loss more accurately based on contact with the outside, and avoid job sites that end up under-heated or oversized. In practice, it's a simple benchmark to keep your calculations and quotes reliable, without getting lost in theory.
5 min read
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