wendows brings every energy-renovation trade together under one roof. From quote to installation, we handle it all — you enjoy the savings.
Five areas of expertise, sized together. That’s the one stop shop.
01 PVC, aluminium and wood-aluminium. Triple glazing, acoustic insulation, bespoke design.
Discover our windows →
02 Green electricity sized for your roof. Optimisers and a long warranty.
See photovoltaics →
03 Store your solar surplus and use it in the evening. Maximum self-sufficiency.
Understand storage →
04 Heating and hot water up to 4× more efficient, designed for renovation.
Discover heat pumps →
05 Our free energy audit pinpoints the most cost-effective combination for you.
Free audit →Coordinating a joiner, an electrician, a heating engineer and an insulation specialist means weeks lost. With wendows, everything is under one roof — and everything works together.
Talk to an advisor →
Approved teams trained in-house — never uncontrolled subcontracting.
We prepare your regional grant applications and deduct them from your bill.
A personalised, costed study within 48h, in full transparency.
Extended warranties and responsive after-sales service based in Belgium.
Flexible payment solutions to spread your investment.
Wallonia, Flanders and Brussels — teams close to you.
You fill in the form or call us. We map out your project.
Technical visit and a detailed overall quote within 48h, grants included.
Our certified teams carry out the work, on a controlled schedule.
Commissioning, grant applications and lasting after-sales support.
Wallonia, Flanders, Brussels: every region has its own aid. We identify every grant you’re entitled to, prepare the applications and deduct them.
* Indicative amounts, varying with your income, the region and the nature of the work. Precise calculation when you receive your quote.
« A single contact for the panels and the battery: everything was simplified. Clear quote, tidy worksite, and the grants handled from A to Z. »≈ €1 300/yr in savings
« Triple-glazed windows and roof insulation all at once. The house is transformed and the bill has melted away. A punctual, meticulous team. »−35% on heating
« Replaced the oil boiler with a heat pump. Honest advice, spotless installation and genuine follow-up after the job. Highly recommend. »100% oil-free
Tell us what interests you. A wendows advisor gets back to you with an initial estimate, grants included.
No. Many start with insulation and windows, then add solar and a heat pump. Everything is designed to fit together, even in stages.
Yes. We identify the regional grants you’re entitled to, prepare the applications and, where possible, deduct them from your bill.
Yes — in Wallonia, Flanders and Brussels, with local teams. Give us your postcode and we’ll confirm timescales in your region.
Completely free and with no commitment. You receive a detailed, costed study — it’s then up to you to decide.
Yes, staged payment solutions are available. Your advisor will present the options suited to your project.
Receive your free, personalised quote within 48h. No commitment.