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Zehnder overhaul

Have your Zehnder motor overhauled

Is your Zehnder ventilation unit or HRV unit noisy, humming, or not running properly? Then a complete replacement is not always necessary. In many cases, motor overhaul can be a sustainable and economical solution.

Solution Motor overhaul
  • For many Zehnder models
  • Often cheaper than replacement
  • Sustainable repair
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When is overhaul interesting?

  • The motor is noisy, humming, or vibrating.
  • The motor runs heavily or does not start properly.
  • The extraction or air supply has decreased.
  • The bearings or rotating parts are worn.

For which Zehnder systems?

  • Mechanical ventilation units such as ComfoFan and ComfoFan Silent.
  • HRV units such as ComfoAir Q, E, Flex, and Standard.
  • Decentralized HRV units such as ComfoAir 70 and ComfoSpot 50.
  • Older Stork/Zehnder systems can often also be assessed.

What does an overhaul entail?

During an overhaul, the ventilation motor is inspected, and worn parts are replaced where necessary. This includes bearings, rotating parts, or parts that cause noise, vibrations, or heavy running. In this way, your existing Zehnder system can often function more quietly and reliably again.

Not sure if an overhaul is possible?

Send us a photo of the nameplate or use the troubleshooting tool. We will gladly help you find the right repair or overhaul for your Zehnder ventilation system.

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Overhaul or replace?

Replacement is not always necessary. Many Zehnder systems can still be technically restored. When mainly the motor or bearings show wear, an overhaul is often a practical and sustainable choice.

Choose the right solution

Zehnder motor overhaul View repairs → First check for malfunction Start troubleshooting →

Read more about Zehnder

Also check out our other information pages about Zehnder ventilation units, HRV units, parts, malfunctions, and overhauls.

Zehnder ventilation units Main page of the Zehnder knowledge center Mechanical ventilation units ComfoFan Silent, ComfoFan S, Silent Limited and CVM HRV units ComfoAir Q, E, Flex, Standard, ComfoAir 70 and ComfoSpot 50 Zehnder overhaul Everything about motor overhaul and repair Zehnder parts Motors, circuit boards, capacitors and other parts Zehnder is noisy Noise, vibrations and wear Zehnder hums Constant hum or resonance Zehnder no longer runs Motor does not start or does not respond Zehnder does not extract well Low extraction or moisture problems Zehnder bearings worn Grinding or squealing motor due to wear

Is your problem or model not listed?

Use our troubleshooting tool or parts finder. We are happy to help you find the right solution.

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