Call 0330 223 4180 System Service Quote

Product Manuals - Zehnder

How do I change the filter?
What's the red flashing light?
How can I increase the boost speed?

If you have questions about your Zehnder ventilation system, need a service for a Zehnder ventilation system, or just want to find out more about how it works in your home, we've pulled together some of the key homeowner manuals with important and relevant information.
If you can't find what you need, please call us on 033 0223 4180


Zehnder Repair - MVHR

We are experienced with Zehnder MVHR and MEV units and can help identify issues and make recommendations simply and cost-effectively.  We can schedule a call out, or you can send photos and videos for our specialists to diagnose what the issue might be.  We hold stock of key Zehnder parts so are able to help support you quickly and efficiently.

Our team can help with Ubbink repairs including;

  • Error Code/Red Light
  • Replacement Motors
  • Replacement PCB
  • Replacement Sensors
  • Full Zehnder Unit Replacements
  • Warranty Claims - We are a Warranty Partner

Call 033 0223 480

Send Repair Enquiry

What's wrong with my unit?

Zehnder MVHR: Homeowner Product Manuals

Download your Zehnder MVHR user manuals below.

If you are looking for Zehnder MVHR Filters you can buy from The Air Shop
Use HRVFIL10 for 10% off at Checkout

Zehnder ComfoAir Q 350, 450 & 600
MVHR Homeowner Guide

Zehnder ComfoAir 155WM/155CM
MVHR Homeowner Guide

Zehnder ComfoAir 185WM/185CM
MVHR Homeowner Guide

Zehnder ComfoAir 200
MVHR Homeowner Guide

Zehnder ComfoAir 350 & 550
MVHR Homeowner Guide


What's wrong with my unit?


Motor Failure

The inside of a unit can quickly and easily become clogged with grease, dust, and moisture. 

This happens if the unit not serviced annually, this can usually be heard through loud noises coming from the unit, the motor can be easily replaced.


Steam Isn't Clearing

If steam isn't clearing after cooking, showering, etc... this is a sign your unit is overdue a service.

The extract valves should be clearing excess steam, moisture, and humidity, if they're not it's a sign something isn't running as it should!


Stuck In Boost

If your unit is stuck in boost, this is also usually a PCB-related issue (if the unit is louder than usual, this is a sign it's running in boost).

You can have your unit checked and if there is an issue with the PCB, it can easily be replaced.


Unit PCB Failure

The PCB is also referred to as 'The Brain' of an MVHR unit, it controls the unit.

You can be notified by an error code on the MVHR unit, some other signs are if the unit stops working suddenly and airflow in and out of the unit stops.

Choose your MVHR Filter based on your air quality needs

Replacement filters for the Zehnder MVHR units are advised to be checked/replaced minimum every 6 months 

You can choose your filter based on your indoor air quality and breathing needs - Primary Protection, Anti-Allergy, Pet & Pollen or Complete Cover

Service your system annually from as little as £165.83*

It is recommended that the MVHR units are serviced annually to ensure good airflow performance and to help lengthen the life of unit (the systems are moving a lot of air and quickly become clogged with dust and debris!)

*price based on unit type and no of bedrooms

Sign Up & Save - From as little as £17.43* per month

Pay Monthly ventilation system service plans* are available in 1, 2, and 3 years and help you spread the cost of your annual servicing throughout the year - simply monthly installments and fixed costs for the term of the plan

* 3 year plan. Unit must have been serviced by us before plan can commence

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