Pierre-Louis Guhur

On a renovation job, correct sizing is what separates a smooth-running project from a string of callbacks. When the machine is too powerful or too marginal, you pay for it with short cycling, discomfort and climbing consumption. By mastering 5 common pitfalls, you secure your quotes and save time from the study phase onward.

5 min read

In an unheated loft, a poorly insulated ventilation duct can quickly cause condensation and airflow loss, followed by service calls you could have avoided. With a few good habits around choosing the insulation, sealing the connections, and routing the ductwork, you secure the job's performance and durability. The idea is to keep air circulating well, with no moisture creeping in where it shouldn't.

5 min read

R744 is not a fluorinated greenhouse gas. It sits outside EU Regulation 2024/573, and therefore outside the quotas, the Article 5 leak checks and the Annex IV bans, and it also sits outside the French regime of Articles R543-75 and following. What constrains it lies elsewhere: the high pressure of the transcritical cycle, and the hot water temperatures set by the French order of 23 June 1978 as amended.

5 min read

This article deals with the air-to-water heat pump and underfloor heating pairing from the sizing side only: the output the floor can actually deliver under the applicable caps, the water regime that follows, and the minimum modulated output the machine has to be able to hold. The site work, testing and heat-up, is covered in a separate article.

5 min read

When a client is torn between dry and fluid thermal mass, you're often the one who settles it. It's up to you to turn two closely related technologies into a simple choice, discussing comfort, responsiveness, maintenance and installation constraints. With a few clear benchmarks, you secure the quote and avoid callbacks.

5 min read

In 2026, the choice of refrigerant is no longer a minor detail. On site, it can tip a sale between compliance, performance and equipment availability. Between tightening bans and new refrigerants with a lower climate impact, you need a simple benchmark to propose the right solution, without risk to your client or your schedule.

5 min read

When your schedule is already full, the real lever is not adding more hands. It is making every job more valuable, by pricing more accurately, framing better, and cutting the "invisible" hours that eat into your margin. You can grow your revenue without hiring, by making your quotes more profitable and your teams more efficient, starting in the next few weeks.

5 min read

Summer comfort has only one official set of figures in France, and it applies to new build alone: the RE2020 discomfort degree-hours. In a retrofit no text sets a threshold, which means your written commitment on the quote is the only document anyone can hold you to. Worth knowing exactly what RE2020 measures before promising anything.

5 min read

On a job, knowing exactly when to stop heating isn't about comfort, it's about control and lower bills. With a simple calculation method, you can justify this threshold to the customer and set your controls according to insulation, building thermal inertia and free gains (sun, usage). The result: less overheating, cleaner regulation, and works whose impact shows up in consumption figures.

5 min read

On an energy retrofit job site, everything often comes down to the order of operations. As a tradesperson, you save time, secure performance and cut down on rework when you start with the right measures at the right moment. From the building envelope to the systems, here's a simple method to help you decide fast, without guesswork or overpromising.

5 min read

When a client wants comfort in both summer and winter, you have to decide quickly between output, efficiency and placement, without turning the job into a headache. With a good reading of room-by-room needs and a few points of vigilance on noise, units and controls, you can offer a solution that both heats and cools, while staying simple to maintain.

5 min read

On site, external wall insulation is often decided by the details. Layout, thermal bridges, base starter, finishes, every choice matters to hold performance and avoid costly rework. If you set a clear method from the site visit onward, you save time, secure quality, and leave a clean result your client sees right away.

5 min read

When your clients want to renovate without getting lost in grants, quotes and technical choices, you're the one who brings order to it all. With a simple 5-point method, you save time, secure the job, and explain the value of your recommendations more clearly. Enough to move quickly, with no vague promises or unnecessary complexity.

5 min read

On a roof, orientation and the zone you're working in change everything, both for summer comfort and for winter gains. By mastering the coverage factor, you can justify your choices to the client without endless calculations, and secure the actual performance of the job. The idea is simple — aim for the right balance between protection and gains, based on the façade and the local climate.

6 min read

Between a single system and room-by-room equipment, the question isn't the technology, it's the right project scenario. As a tradesperson, you save time when you know where the real costs hide — network to build, maintenance, controls, and above all how the home is actually used. The idea is to choose the solution that holds up over time, not just on the quote.

5 min read

On a job site, mistakes don't forgive. A gap in a quote, poorly checked information about a grant, and you lose time, or even end up with an unhappy client. With an AI assistant built for energy-renovation professionals, you secure your answers, your technical choices and your deliverables, without drowning in paperwork.

4 min read

For sizing that holds up, everything hinges on the right local cold-weather scenario. As a tradesperson, this benchmark is what keeps you from installing a heat pump that runs at overcapacity or, conversely, an oversized system that costs more and regulates poorly. With a few simple checks, you can secure your power choice and your on-site performance.

5 min read

Between a single hydraulic network and room-by-room equipment, your clients mainly want comfort without a runaway bill. In renovation, the right choice turns on three very concrete points: the state of the building, actual usage patterns, and the ability to control zone by zone. By framing these criteria as early as the visit, you secure the quote and avoid bad surprises on site.

5 min read

On a job site, the right heating choice often comes down to two simple questions. What level of comfort does your client expect, and what network already exists in the home, radiators, underfloor heating, or nothing at all. By asking the right questions from the site visit, you avoid bad surprises and protect your margin.

5 min read

In 2026, what makes the difference isn't just your know-how, it's your organization. A clear structure, well-defined roles and tight job tracking save you from endless days and margins that evaporate. Set the right framework now, and you gain as much in peace of mind as in profitability.

5 min read

When a prospect lands on a page, you have a few seconds to convince them to request a quote. With Argile, you start from a clear page, in your colours, that highlights your projects, your coverage area and the available subsidies, without spending your evenings tinkering with copy. The result: you capture more qualified leads and keep time for what matters, your job sites.

5 min read

On an energy renovation job site, you're no longer just 'the person who runs the cables.' Heat pumps, mechanical ventilation, heat-pump water heaters, load control — it all comes down to your connections and settings too. When your clients want grants, what they really expect is a rigorous professional, able to coordinate, explain, and deliver an installation that runs right the first time. And that's exactly where your trade gains value.

5 min read

When a request comes in, everything hinges on a few kilometres. By being clearly visible on the Argile directory, you attract clients near your job sites more easily, with clear information, photos, and reviews that reassure. The result: less time wasted chasing contacts, and more qualified requests, in the right place, at the right time.

5 min read

Between chasing clients, adjusting for site conditions, and paperwork, your days fill up fast. With Argile, you centralize quotes, tracking, and invoicing in one place, without re-entering data twice, and with documents ready to send exactly when the client expects them. You keep your rhythm on site, and the admin work finally keeps up.

5 min read

6%: that's the share of French homes rated A or B on the DPE in 2024, far too little to aim for carbon neutrality, and a clear signal that 'step-by-step' quickly hits its limits. Between comprehensive renovation and phased works, the challenge is guiding your clients toward the right scenario, at the right time, without overselling or undersizing. This guide helps you decide, with arguments and points of attention to back it up.

7 min read