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Remeha heat exchanger EWN75 S102542

€ 10,843.58 incl. VAT

Original spare part Remeha. Type: Heat exchanger. Application: Hot water cylinder / Sentry EWN. Delivery time: approx. 7–10 days. Supplier code: S102542.

Niet meer leverbaar — vervallen bij de fabrikant

SKU: 8740123 Categories: , Brand:

Price and stock checked on 20 October 2026.

Price incl. VAT. Any delivery costs are calculated in the basket — see shipping & delivery.

Niet meer leverbaar. Dit onderdeel is door Remeha uit het assortiment gehaald en kan niet meer besteld worden. Meestal is er een vervangend onderdeel. Mail het typenummer van uw toestel en dit artikel naar info@instalpunt.nl of bel 085-303 7272, dan zoeken wij de juiste vervanger. Of bekijk vergelijkbare remeha.

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Remeha heat exchanger EWN75: original Remeha spare part, type: Heat exchanger. Application: Hot water cylinder (Sentry EWN). Manufacturer number: S102542; Instalpunt article number: 8740123.

According to the Remeha parts lists, this part fits 2 models, including Sentry EWN 40/50/65/75 and Remeha Sentry EWN. The full list is under “Fits”.

Special-order item (delivery time approx. 7–10 days): it is ordered specially for you from the manufacturer and is non-returnable.

Check the rating plate of your appliance before ordering; if in doubt, ask the manufacturer or your installer.

Product information: Remeha heat exchanger EWN75 S102542

BrandRemeha spare parts
Remeha manufacturer numberS102542
Instalpunt article number8740123
EAN8713809248345
Part typeHeat exchanger (All Remeha heat exchangers · heat exchangers of all brands)
ApplicationHot water cylinder
Suitable for2 Remeha models (see list)
DeliveryNiet meer leverbaar (vervallen bij de fabrikant)
Price€ 10.843,58 incl. VAT
OriginSupplied through the official technical wholesale channel, under Remeha number S102542

Also known as: wisselaar, rookgaswarmtewisselaar, primaire wisselaar.

Fits 2 Remeha models

The part Remeha heat exchanger EWN75 S102542 is in the official parts list of these Remeha appliances. Click a model for the complete parts list and exploded view.

Remeha hot water cylinder (2)

Check the rating plate of your appliance. Not sure whether this part fits? Check with the manufacturer or your installer; with the correct manufacturer number you can order it here directly.

Position on the parts diagram

This spare part is shown as position 13 on the parts drawing. Open the drawing for the appliance and click the number to check that you have the right spare part.

For which fault is a Remeha heat exchanger replaced?

According to the fault code database, these Remeha fault codes point to this type of part. Always check first that the code matches the appliance type on the rating plate.

CodeWhat is going on
4Maximum heat exchanger temperature rise exceeded
E 408Unit on E_12 and condenser inlet temperature rises by more than 10 °C within 1 hour.
E 420Open circuit or short circuit of condenser inlet temperature sensor.
E 444Evaporator temperature sensor defective

All Remeha fault codes explained

Indicative: the same code can have a different cause depending on the situation. Have work on gas, flue or burner adjustment carried out by a qualified installer.

Available: Heat exchanger by Remeha

This part has been discontinued by the manufacturer. There is no available alternative of this type for the same models. These Remeha parts of the same type are available, but belong to other models.

Please note: these are not confirmed replacements. Check the manufacturer number in the spare parts list or exploded view of your appliance, or just ask us.

Frequently asked questions about this item

Does the Remeha heat exchanger EWN75 S102542 fit my appliance?
This part is in the parts list of 2 Remeha models, namely the EWN 40/50/65/75, Sentry EWN. The model type is on the rating plate of your appliance. If in doubt, ask the manufacturer or your installer.
Is this item still available?
This item is currently not available. Look for an alternative in the spare parts catalogue or email the article number to info@instalpunt.nl and we will look for an alternative.
What does shipping cost?
Shipping costs € 12.95 to Austria, Denmark, Italy, Spain and Sweden and € 16.95 to other EU countries. In-stock items ordered before 2 pm are dispatched the same working day; delivery usually takes 3–5 working days. Details: Shipping.
I have a fault code, which part do I need?
Look up the code in the fault code finder: per brand and appliance it shows what the code means and which part goes with it. If the code is listed with this part, the part belongs to that fault.
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