WTW.nl
New installation · A to Z

Complete HRV from A to Z, balanced and delivered.

For new builds and existing homes without ventilation. We deliver the complete project: survey, ducts, valves, mounting and commissioning. One fixed price upfront.

Fixed all-in price1–2 day installationNo call-out fee in Delft region
4.5 / 5 on Trustpilot (55 reviews)·Since 2018 ·800+ installations

Recent · Music school Amsterdam

Fresh air — without you hearing it.

Studio · Amsterdam
SilencersSeparate zonesFire dampers NEN2y warranty

All-in estimate

from € 7,500

Excl. VAT · Q350 or Renson Flux 225, complete installation including unit, ducts, mounting and commissioning (excl. grilles). Final price after on-site intake.

  • 2-year installation warranty · 2-year unit factory warranty
  • Maintenance contract first year included
  • Fixed price, no extra-work surprises
  • No call-out fee in Delft region (30 km)

Our expertise

Three steps to a fully commissioned installation.

1

Survey & advice

We assess your home and calculate the required flow. You receive tailored advice with a clear quote.

2

Mounting

Our technicians install the unit and the duct system. Neatly concealed and vibration-free.

3

Commissioning

We use measuring equipment to set the valves for optimal air balance. Report + explanation.

ISDE subsidy 2026

Possible € 400 ISDE subsidy per HRV unit

From 1 January 2026 energy-efficient HRV installations qualify for a € 400 ISDE subsidy per unit. We handle the application via our partner simpelsubsidie.nl.

Requirement: receipt from WTW.

What is included in the price?

One fixed price, all-in (excl. valves).

Labour + mounting material

Fixed rate per floor, no surprises.

Ducts + connections

With silencers and thermally vapour-tight insulation.

Roof penetrations

€ 475 (1) or € 775 (2) extra, depending on situation.

Commissioning

Balanced per valve. Per Dutch building code.

Frequently asked

Answers to the most common questions.

What counts as a floor in the price?+
1 floor = 1 level where valves are installed. HRV in attic + 1st floor + ground floor = 3 floors. We charge € 1,800 excl. VAT per floor (labour + materials, excl. valves).
How many roof penetrations do I need?+
Standard 2 (1 supply + 1 exhaust). 1 penetration costs € 475 extra, 2 penetrations € 775, cheaper per unit.

Request your installation quote.

Reply within 24 hours. Fixed price, no extra-work surprises.

Reply within 24 hours. No obligation, no pushy sales.
1. Which HRV brand do you prefer?
2. Your details
Estimated total
€ 5.500,-excl. VAT
Final after a short intake. We call within 1 business day.

We only call to discuss your request. No newsletters, no spam.

Want to talk first?

085 060 22 97WhatsApp

Official dealer Zehnder · Renson · Duco·First in NL with ComfoClime-certificate

Trustpilot 4.5/5 (55 reviews) · Google 5.0/5 (5 reviews) · 800+ installations · Since 2018