How do I know if this plate heat exchanger is the one for my boiler?

Check the reference S1005800 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part. It is a DIFF part.

The plate heat exchanger transfers heat to the domestic hot water (DHW).

Is the hot water lukewarm or does it take a long time?

It usually indicates a blocked or scaled heat exchanger.

Which models is it suitable for?

Part shared by various models (see Compatibility). If your model does not appear, send us a photo of the marking and we will confirm it.

Installation and recommendations

Check the seals and descale the circuit; compare the number of plates and the connections.

What does refurbished mean and what coverage does it have?

Part removed from a boiler out of service, inspected and tested. Includes 1-year warranty and 14-day return policy. Delivery within 2–4 working days in the EU.

RefurbishedSaunier Duval Plate heat exchanger

Saunier Duval ThemaClassic F24E Domestic Plate Heat Exchanger Ref. S1005800

30 €VAT includedIn stock · 5 units

Plate heat exchanger: refurbished spare part that transfers heat to domestic hot water. Useful if the hot water is lukewarm or takes a long time. Compatible with Thematek S C 24 E, Thematek S F 24 E, Themaclassic C 24 E (ref. S1005800). Includes a one-year warranty and delivery within 2–4 working days in the EU.

Consult via WhatsApp

Not sure if it's your part? Send us a photo of the screen printing via WhatsApp and we'll confirm compatibility before you purchase.

Delivery in 2–4 working days

1-year warranty

14-day return

Technical support

Key Data

Reference: S1005800
Brand: Saunier Duval
Type of part: Plate heat exchanger
Available units: 5 units in stock
Status: Refurbished
Warranty: 1 year
Shipping: 2–4 working days (EU)
Return: 14 days

The same part (ref. S1005800) equips these models. Verified compatibility; check the reference before purchasing.

Thematek

Thematek S C 24 E
Thematek S F 24 E

Themaclassic

Themaclassic C 24 E
Themaclassic C 25 E
Themaclassic F 24 E
Themaclassic F 25 E

Semia

Semia Tek C 24
Semia Tek F 24
Semia Condens F25

Thema

Thema F 25 E STL
Thema NOx F 25-B
Thema Condens F25

How do I know if this plate heat exchanger is the one for my boiler?: Check the reference S1005800 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part. It is a DIFF part.
What is it used for?: The plate heat exchanger transfers heat to the domestic hot water (DHW).
Is the hot water lukewarm or does it take a long time?: It usually indicates a blocked or scaled heat exchanger.
Which models is it suitable for?: Part shared by various models (see Compatibility). If your model does not appear, send us a photo of the marking and we will confirm it.
Installation and recommendations: Check the seals and descale the circuit; compare the number of plates and the connections.
What does refurbished mean and what coverage does it have?: Part removed from a boiler out of service, inspected and tested. Includes 1-year warranty and 14-day return policy. Delivery within 2–4 working days in the EU.