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

Verify the reference 0020105937 printed and ensure your model is on the list of compatible ones; also compare the connections with the original 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 Isofast 21 Condens F30 B Domestic Plate Heat Exchanger Ref. 0020105937

50 €VAT includedIn stock · 1 unit

Plate heat exchanger: reconditioned spare part that transfers heat to domestic hot water. Useful if the hot water is lukewarm or takes a long time. Compatible with Isotwin Condens F30-A, Isofast 21 Condens F30-B (ref. 0020105937). 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: 0020105937
Brand: Saunier Duval
Type of part: Plate heat exchanger
Available units: 1 unit in stock
Status: Refurbished
Warranty: 1 year
Shipping: 2–4 working days (EU)
Return: 14 days

The same part (ref. 0020105937) equips these models. Verified compatibility; check the reference before purchasing.

Isotwin Condens

Isotwin Condens F30-A

Isofast 21 Condens

Isofast 21 Condens F30-B

How do I know if this plate heat exchanger is the one for my boiler?: Verify the reference 0020105937 printed and ensure your model is on the list of compatible ones; also compare the connections with the original 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.

Saunier Duval Isofast 21 Condens F30 B Domestic Plate Heat Exchanger Ref. 0020105937

Key Data

Isotwin Condens

Isofast 21 Condens

Spare Parts Related Boiler Isofast 21 Condens F30 B