Zehnder heat-recovery ventilation — fresh air with no compromises

Zehnder comfort ventilation

Zehnder heat-recovery ventilation — fresh air with no compromises

Swiss build quality, heat-recovery efficiency up to 95 %, quiet operation and allergy-friendly filtration. Authorised design and installation of Zehnder ventilation by SmartAir technicians.

From

89 990 CZK

incl. VAT

Free consultation

Get a free Zehnder ventilation proposal

Answer 3 quick questions and we'll prepare a tailored, no-obligation quote.

Krok 1 ze 4 · Project stage25 %

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What we offer

Complete services
all in one place

✓Centralised ComfoAir Q units for family homes
✓Compact ComfoAir 70 / 200 for flats and smaller homes
✓Decentralised ComfoSpot 50 for retrofits without ductwork
✓Heat-recovery efficiency up to 95 %
✓Quiet operation – suitable even for bedrooms
✓ePM1 filtration for allergy and asthma sufferers
✓ComfoTube ducting with antibacterial inner layer
✓Control via ComfoControl and the mobile app

Why Zehnder

Four reasons to choose Zehnder

01

Heat recovery up to 95 %

Zehnder’s enthalpy exchangers transfer almost all the heat – and some of the moisture – to the incoming air. Maximum comfort with minimal losses.

02

20+ years of Swiss build

Zehnder is a Swiss manufacturer with decades of experience. Units are designed for long life and consistent performance throughout their service life.

03

Quiet enough for bedrooms

Carefully sound-insulated units and intelligent fan control mean the system is virtually inaudible in the bedroom.

04

Filtration for allergy sufferers

ePM1 filters capture pollen, dust, smog and microscopic particles. Indoors, you breathe air cleaner than outside – relief for allergy and asthma sufferers.

Model range

Popular Zehnder models

Flagship range

ComfoAir Q

Centralised unit for family homes with self-learning control, high efficiency and quiet operation. The top of the Zehnder range.

Flats and smaller homes

ComfoAir 70 / 200

Compact units for flats, smaller family homes and renovations. Easy installation, high efficiency, quiet running.

Decentralised

ComfoSpot 50

Decentralised unit for a single room – ideal for flat refurbishments where ducting isn’t practical. Installs with minimal building work.

Distribution

ComfoTube / ComfoWell

Ducting system with an antibacterial inner layer for hygienic, clean air distribution throughout the home.

SmartAir + Zehnder

What you get when we install for you

  • ✓Certified design and installation by an authorised Zehnder partner
  • ✓Manufacturer warranty, warranty and post-warranty service, and supply of original filters
  • ✓Free site survey and duct design, quote within 48 hours
  • ✓Control via ComfoControl and the mobile app, smart-home integration

How to order

From consultation to handover

01

Consultation and enquiry

Get in touch via the form or by phone. We review the layout of your home and your comfort requirements and recommend the right Zehnder model.

02

Duct design and quote

We survey the space free of charge, size the ducts and plan the unit and grille positions. Within 48 hours you receive a detailed quote.

03

Installation

We install the Zehnder unit, route ComfoTube ducting and fit the distribution components. A central system is typically installed within 1–3 days.

04

Handover and service

We balance airflows, set up control and modes via ComfoControl and brief you on operation and filter maintenance. We remain available for routine servicing.

Case studies

Selected projects

Zehnder ComfoAir heat-recovery ventilation in a flat in central Brno

Apartment refurbishment, central Brno

Zehnder ComfoAir heat-recovery ventilation with full ductwork for a 3+1 flat.

FAQ

Frequently asked questions

The unit transfers heat from the outgoing warm indoor air to the incoming fresh air via a special exchanger. The two airflows do not mix. Counter-flow exchangers reach heat-recovery efficiencies of 80–95 %, so pre-warmed fresh air enters the home.
It cuts ventilation heat losses by 80–90 %. In a typical family home that means CZK 5,000–15,000 a year off heating bills compared with ventilating through open windows. The exact saving depends on house size and climate.
Filters are typically replaced every 3–6 months depending on the environment (dust, allergens, proximity to busy roads). A filter set costs around CZK 300–800. Most modern units flag a filter change on the control panel.