Custom windows and frames, solar panels, storage batteries, heat pumps and insulation: wendows covers every trade of the energy one-stop shop. Whether you are replacing a single window or renovating your whole home, choose below the category suited to your project — we coordinate the rest.
Each family answers a precise need in your renovation. Here are the main Wendows categories and the key pointer for each. Click below to open the full guide for each product.
Custom windows, doors, sliders and glazing. PVC for the best insulation/price ratio, aluminium for large bays, wood-aluminium for the premium end. The historic core of the trade, fitted across Belgium.
Photovoltaic production to cover up to 70% of your electricity consumption. Sized to your roof and your usage, inverter and monitoring included. The brick that brings the bill down for good.
Store the solar surplus produced during the day to use it in the evening. A well-sized battery sharply increases self-consumption and independence from rising electricity prices.
Heating and hot water by aerothermics: air-to-air, air-to-water or for pools. A heat pump returns 3 to 5 times the energy it consumes — the decarbonised alternative to oil and gas.
Roof, walls, floors: insulation is the first source of savings, to tackle before heating. Work that qualifies, depending on your region and income, for grants of up to 35% of the amount.
EV charging point, smart energy management, inverters and equipment: the bricks that connect solar, battery and mobility in a coherent ecosystem.
* Indicative pointers specific to each family. Exact performance, grants and budgets depend on your home and your region — specified during the free quote.
Entrusting your whole renovation to a single player has real strengths, and a few cases where separate tradespeople still make sense. Here, honestly, is what to weigh up.
Depending on the scale of your work, the range is not approached the same way. Three scenarios to place yourself:
You want to cut your bills and the home’s carbon footprint sharply: we combine insulation, high-performance windows, a heat pump and solar in a coordinated, grant-backed plan.
For a new home, everything is planned from the outset: high-performance joinery, a heat pump, photovoltaics and a battery to aim for near-zero energy from handover.
A specific need — changing windows, fitting panels or a charging point: we work on the lot you want, cleanly, without forcing the rest of the project on you.
The golden rule: insulate before heating, produce before storing. Start with insulation and high-performance windows, then add a heat pump and solar. When in doubt, ask for a free overall quote: we prioritise for you.
A 1974 house heated with oil, poorly insulated and fitted with single glazing. In one coordinated project, wendows insulated the roof and walls, replaced every window with triple glazing, installed an air-to-water heat pump and 14 solar panels. One quote, one point of contact, every grant assembled by our teams.
5.0/5 · 5verified reviews
« Nous avons fait appel à la société Wendows pour le renouvellement de nos châssis et nous sommes vraiment ravis du résultat ! Les travaux ont été réalisés dans les délais annoncés et la finition est impeccable. De plus, M. Aprile qui s'est occupé du devis, s'est toujours montré disponible pour répondre à toutes nos questions. Nous vous recommandons donc de faire appel à eux pour vos travaux ! »
« Nous avons fait appel à Wendows pour le remplacement de nos châssis et nous sommes très satisfait de notre choix. Qualité et suivi de chantier au top ! »
« Ik heb via WEndows een raam aangekocht van 2m x 2m. Mijn algemene ervaring is goed. Zeer goeie communicatie, altijs zeer snelle reactie bij een vraag of opmerking. Het installatie team werkte ook zeer efficient. Tevreden van het eindresultaat! Bedankt WEndows »
Three ways to run an energy renovation. Compare them point by point, then open below the product category that interests you.
| Critère | Wendows (one-stop)Vous êtes ici | Separate tradespeopleVoir la gamme → | Big-box / DIYVoir la gamme → |
|---|---|---|---|
| Point of contact | A single one, from quote to fitting | One per trade | Yourself |
| Coordination of lots | Planned and guaranteed | Down to you | Non-existent |
| Energy coherence | Project planned as a whole | Lot by lot | Case by case |
| Grant management | File assembled for you | To put together alone | Rarely eligible |
| Warranty & after-sales | Single, across the whole project | Split by tradesperson | On the equipment only |
| Fitting & compliance | Certified installers | Varies by tradesperson | At your own risk |
| Ideal for | Multi-lot renovation | A single mastered trade | Small DIY jobs |
Custom windows, doors, sliders and glazing. PVC, aluminium or wood-aluminium, fitted across Belgium with grants and 6% VAT.
See the windows →Produce your own electricity and cover up to 70% of your consumption. Sizing, inverter and monitoring included.
See solar →Decarbonised heating and hot water: air-to-air, air-to-water or pool. Returns 3 to 5 times the energy consumed.
See the heat pumps →Roof, walls and floors: the first source of savings, to tackle before heating. Grants up to 35% of the amount.
See insulation →Store your solar surplus for the evening and gain in self-consumption. The brick that completes photovoltaics.
See the batteries →The parent silo of this page: an overview of our joinery, glazing, fitting and grants in Belgium.
Back to the windows guide →Each trade has its own pricing logic depending on the home, the dimensions and the target performance. Here are some orders of magnitude to place your project before the detailed quote.
Request a free costed quote →* Indicative ranges per item, excluding specific configurations and before grants. A precise estimate is provided with your free quote, grants and 6% VAT deducted.
Five main families: windows and joinery (windows, doors, sliders, glazing), solar panels, storage batteries, heat pumps (air-to-air, air-to-water, pool) and insulation (roof, walls, floors). Added to these are related solutions such as charging points and energy management. Each family has its full guide, accessible from this page.
Because an energy renovation benefits from being planned and coordinated as a whole. With a single point of contact, you have one quote, one project lead, a single warranty and a grant file assembled for you. The lots follow in the right order — insulate before heating, produce before storing — with no rework between trades.
Yes, in most cases. Insulation, high-performance windows, a heat pump and solar qualify, depending on your region and income, for distinct grants that combine, on top of 6% VAT for homes over ten years old. We identify and assemble all the aid eligible for your project.
You benefit from a single warranty covering all the work carried out by our teams, supplies and fitting included. For any question or after-sales, one point of contact takes charge, whatever the trade concerned — no passing the buck between tradespeople.
The detailed quote is delivered within 48h after the survey. Project lead times then depend on the supplies (custom windows take a few weeks of fabrication) and the scale of the lots. On an overall project, we schedule the work in a logical order to limit the total time the home is occupied.
Yes, our teams work across all of Belgium — Wallonia, Brussels and Flanders. As grants are regional, we adapt the aid file to your region and handle the corresponding paperwork for each product installed.
Free home survey, grants calculated and combined, a single point of contact for the whole project. Describe your project in under a minute.