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

When the outdoor temperature drops, that's often when your clients judge comfort… and when the settings make all the difference. By mastering the logic behind varying the heating-water temperature with the climate, you save time on call-outs, cut down on 'it's not heating' calls, and secure consistent consumption. A few simple reference points are enough to get it right from commissioning.
5 min read

A microchannel exchanger cuts the internal volume of the condenser, and therefore the refrigerant charge. No quantified gain is published by any primary source, but the regulatory consequence is: below 3 kg, a split system falls under the ban on GWP of 750 or above that has applied since 1 January 2025. Here are the thresholds, the cleaning rules and what to check before specifying one.
5 min read

On site, you're looking for insulation that ticks the boxes for summer comfort, moisture management and hassle-free installation. This plant-fibre solution fits easily into walls, sloped ceilings or floors, in both new build and renovation, with formats close to what you're used to. Chosen and installed well, it helps you achieve insulation that's consistent, durable and pleasant to live with for your clients.
6 min read

When several trades share a whole-house renovation project, the real headaches rarely come from the materials. They arise at the junctions — one trade arriving too early, another changing a detail, and the whole schedule slips. With a simple method for sequencing tasks, checkpoints and proof of completion per trade, you secure quality, deadlines and your margin, without drowning in paperwork.
5 min read

Between monobloc and bibloc, it is not efficiency that decides but the job itself: a monobloc puts water outdoors and spares you any work on the refrigerant circuit, a bibloc keeps the water inside but requires refrigerant handling credentials and a properly executed refrigerant install. The rest, frost, acoustics, maintenance access, is recorded on the technical visit and written into the quote.
5 min read

On the ground, a good pellet heating appliance often comes down to three simple points: the right output, a well-thought-out air intake, and maintenance planned ahead to avoid callbacks. By asking the right questions right from the quote (actual demand, flue constraints, bag storage), you secure the customer's comfort and your margin, without spending your evenings on it. Let's sort through it together, step by step, to choose confidently based on the home and how you install.
5 min read

No text ranks scroll above rotary, and no standardised data compares the two technologies against each other. What can be compared is the seasonal space heating efficiency under EU Regulation 813/2013, the declared sound power level, and the refrigerant charge, which on its own decides your checking obligations. Here is what you record, what you write on the quote, and what carries your liability.
5 min read

On site, you're looking for insulation that holds up without piling on precautions. A bio-based material in granules or panels can simplify installation, especially for interior lining, under screed, or for acoustic correction. The goal is simple: consistent performance, sound moisture management, and a durable result, without the headaches.
5 min read

On a job site, it's not your margin that gets you into trouble, it's the gap between your outgoings and your incoming payments. Between the deposit, progress payments, and retention money, a few weeks of slippage is enough to freeze your purchasing and your schedule. With two or three simple habits, you stay in control of the timelines and secure your jobs without wearing yourself out.
5 min read

On site, the real question isn't the 'best COP' on a spec sheet, but what the machine delivers when demand drops, in mid-season or when just holding temperature. At partial load, a heat pump can gain in efficiency… or collapse if the controls and sizing don't keep up. By mastering these gaps, you protect the quoted consumption figures and your clients' satisfaction.
5 min read

In rural areas, when the gas network isn't there, you need to offer a reliable solution that's simple to maintain and acceptable both on the quote and in use. Tank propane often ticks these boxes, with comfortable output and an installation that adapts well to older homes. Here, the challenge is to secure the sizing, the tank's placement and the right settings to avoid overconsumption and callbacks.
6 min read

The expansion valve meters the feed to the evaporator and sets the superheat. Replacing or adjusting one means opening the refrigerant circuit, and it is that opening, not the part, that triggers the duties: leak checking based on the charge in tonnes of CO2 equivalent, an intervention record, five years of retention. Here are the adjustment references, the valve types and the interval table.
5 min read
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