HRV for projects, from floor to roof.
For contractors, developers, housing corporations and business owners: duct systems cast into the floor, risers, roof penetrations and commissioned HRV units — per home, per block or per building. One point of contact, planning you can build on.
What we do for business clients
From casting ducts into the floor to a commissioned system.
Serial new-build homes
Duct systems cast into wide-slab floors, per home — coordinated with your construction planning.
Risers & roof work
Risers, roof penetrations and roof caps, neatly finished and airtight.
Units + commissioning
Zehnder or Renson units installed and balanced per valve, with measurement reports.
Hotels & offices
Ventilation for hospitality and offices, planned around your operations.
Property & VvE
Replacement and maintenance across multiple homes or units, one contact for everything.
Maintenance contracts
Scheduled maintenance for your whole portfolio, monthly cancellable.
Straight from our projects
Recent project work, unfiltered.
Utility · large duct work
Large-scale duct work at height, mounted to the millimetre.
Reference · hotel project
Hotel on the Zeedijk: replaced while operations continued.
Business work asks for a different rhythm: fixed time slots, clean work routes and no downtime for guests or staff. That is how we plan every business job — from a single office floor to a complete new-build block.
- Planning aligned with your construction or operations schedule
- Fixed contact person for the whole project
- Measurement reports per home or unit
- Zehnder & Renson dealer — original parts
How we work
From drawings to commissioned delivery.
Project intake
Send drawings or plans — we think along on duct routes and unit choice.
Quote & planning
Clear price per home or unit, planned around your schedule.
Execution & delivery
Installation, commissioning and measurement reports — signed off per phase.
Discuss your project with us.
Call us or send your drawings to info@wtw.nl — you will hear from us within one working day.
Official dealer Zehnder · Renson · Duco·First in NL with ComfoClime-certificate
Trustpilot 4.5/5 (56 reviews) · Google 5.0/5 (5 reviews) · 800+ installations · Since 2018