We offer a wide range of enthalpy heat exchangers for most heat recovery ventilation units.

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Installation, compatibility and orientation

Can I shut down the ventilation unit during winter?

Shutting down the unit during winter

During operation, an enthalpy heat exchanger transfers not only heat but also moisture. Under normal operation, moisture is continuously removed by airflow. However, if the unit is switched off, residual moisture may remain in the exchanger, including in the channels for fresh air supply.

Risks when the unit is switched off

  • formation of mold
  • unpleasant odors
  • reduction of hygiene of the entire system
  • long-term reduction of exchanger efficiency

Recommended solution

  • keep the unit running at least at minimum power
  • ensure continuous ventilation even if the building is not occupied

If it is necessary to switch off the unit

In such a case, we recommend the following procedure:

  1. Remove the enthalpy heat exchanger from the unit.
  2. Clean it as follows:
    • vacuum with a soft brush attachment
    • rinse with clean water (max. 50 °C)
  3. Allow the exchanger to dry completely (min. 48 hours).
  4. Then:
    • either return it back into the unit
    • or store it in a dry and clean place

Important notice

Never leave a damp or contaminated exchanger in a non-operating unit. This may lead to its damage and a permanent reduction in performance.

This procedure is based on real operation and helps prevent the most common problems users encounter.

Can I block the condensate drain if I replace a standard heat exchanger with an enthalpic one?

No, never block the condensate drain.

Even though enthalpic heat exchangers produce only a minimal amount of condensate due to moisture transfer, in severe frost and specific humidity conditions, condensate can still occur. Blocking the drain could cause irreversible damage to your unit.

Can using a compatible heat exchanger affect the warranty of my ventilation unit?

The warranty conditions of a ventilation unit are determined by its manufacturer or seller and may vary between manufacturers and products.

If your ventilation unit is still under warranty, we recommend checking the applicable warranty conditions with the manufacturer or seller of the unit before installing a non-original replacement heat exchanger.

RekupeX cannot guarantee that the use of a non-original replacement part will have no effect on the warranty conditions of a particular ventilation unit.

Can I install an enthalpic heat exchanger by myself?

Yes, installation is simple. Just follow the instructions provided with your unit. As with a standard exchanger, it needs to be removed occasionally for cleaning – the process is the same, except that you put the enthalpic exchanger back in instead.

I am not sure about the type of exchanger in my unit, or I did not find my unit type in your e-shop. What should I do?

Feel free to contact us with any unit model. We will do our utmost to provide you with a 100% compatible exchanger, regardless of the type of ventilation unit you have.

Are the heat exchangers offered by RekupeX original spare parts?

The heat exchangers offered by RekupeX are replacement products manufactured by specialized heat exchanger manufacturers such as RECUTECH, ZERN, CORE and others.

If a product is described as compatible with a specific heat recovery or ventilation unit, it is intended for use in the models listed on the product page, taking into account the relevant dimensions, construction and installation requirements.

Unless explicitly stated otherwise, these products are not original spare parts supplied by the manufacturer of the ventilation unit.

Manufacturer names, trademarks and ventilation unit model designations are used solely to identify the intended application and compatibility of the replacement product offered.

Is it possible to insert the enthalpic heat exchanger into the unit in the wrong orientation?

The enthalpic plate works the same from both sides, so the orientation of the plate itself does not matter. However, it is essential that after cleaning the exchanger is always reinstalled in the same orientation, ensuring that the channels for fresh air remain for fresh air and the channels for exhaust air remain for exhaust air.