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Combi · HRV + boiler

HRV replacement, with a new boiler. One job.

For homes with a Zehnder ComfoAir WHR (930) or ComfoAir Standard in a CombiFlow setup: HRV unit and boiler share one exhaust duct, so you replace them together. Exactly our fixed HRV replacement — with the boiler in the same job.

One planningOne point of contactDone in 1–2 days
Request combi quote 085 060 22 97
4.5 / 5 on Trustpilot (56 reviews)·Since 2018·Zehnder & Renson dealer

Why combine?

Same replacement, boiler included.

In a CombiFlow setup (Zehnder ComfoAir WHR 930 / ComfoAir Standard) the boiler takes its combustion air from the HRV exhaust and both share one duct in the shaft, with a KIWA-certified safety valve. Replace one and you touch the other — so we replace both in one job: our fixed HRV replacement, with the boiler aligned, connected and commissioned in the same visit.

  • HRV part: fixed replacement approach (labour € 1,275 excl. VAT)
  • Existing ventilation ducts usually reused
  • Boiler part tailored after a short intake
  • Pipework and drains aligned in one go

Price structure

HRV from € 3,900

Excl. VAT · the HRV part follows our fixed replacement approach: unit + € 1,275 labour, old unit removed and disposed of responsibly. The boiler part is quoted to measure after a short intake — one clear combined quote.

  • HRV replacement: same rules as our replacement service
  • Old appliances removed & disposed of
  • Commissioning + measurement report for the HRV
  • One combined quote, no surprises

What is included?

Everything for ventilation and heating, in one go.

Removal of both appliances

Old HRV unit and old boiler removed and disposed of environmentally responsibly.

HRV on existing ducts

The new Zehnder or Renson usually fits your existing ductwork.

Aligned pipework

Condensate drains, gas and water pipes aligned in one plan.

Commissioning + report

HRV balanced per valve, measurement report by email.

One point of contact

One planning, one team, one phone number for the whole job.

How to proceed?

From request to a fully renewed attic.

1

Fill in the form

Mention your current HRV unit and boiler.

2

Intake call

We align both replacements and give one combined quote.

3

Done in 1–2 days

Both appliances replaced, commissioned and explained.

Frequently asked questions

Answers to the most common questions.

How do I know if I have a CombiFlow setup?+
Common in homes from roughly 1998–2012: a Zehnder (Stork Air) ComfoAir WHR 930 or ComfoAir Standard hangs near the boiler and they share one duct to the roof via a CombiFlow connector (this applies to the Basis versions; the Luxe variant does not have this coupling). Not sure? Send a photo of your attic via WhatsApp — we will tell you right away.
Why replace both at once?+
Because in a CombiFlow setup the appliances are physically linked: the boiler uses the HRV exhaust air and they share one duct with a certified safety valve. Replacing them together means everything is re-aligned, connected and commissioned in one job — one planning, one team, one or two days of work.
Can any boiler be connected to a CombiFlow?+
No — only boilers with a CV/CombiFlow declaration (KIWA/Gastec approved) may be connected, via a concentric connection to the CombiFlow valve. We check this during the intake and quote a suitable model, so the new setup is safe and compliant.
What does it cost?+
The HRV part follows our replacement service: unit + € 1,275 labour excl. VAT (example: Q350 ≈ € 3,900 excl. VAT all-in). The boiler part depends on your situation and is quoted after a short intake. You receive one combined quote.
How long does it take?+
Usually 1–2 working days, depending on the situation. The HRV replacement itself takes 6–8 hours; the boiler is aligned in the same planning.
Which brands do you install?+
For HRV we install the Zehnder ComfoAir Q in a combi setup with the boiler (Renson is possible too). The boiler brand and type are discussed in the intake, so it matches your heating demand and existing installation.
Can I keep my existing ducts?+
In 95% of cases: yes. The new HRV unit usually fits the existing ductwork; we check this during the intake.

Request your combined quote.

Reply within 24 hours. Mention your current HRV unit and boiler.

Reply within 24 hours. No obligation.
1. Which HRV brand do you prefer?
2. Your details
Estimated total
€ 1.275,-excl. VAT
Final after a short intake. We call within 1 business day.

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

Prefer to call? 085 060 22 97·WhatsApp

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