The heat exchangers below are 1:1 replacements for the Sondex SL78
Fits directly without modifying your pipework — delivered quickly from our own stock.
Installer or service company?
Installers and service companies order from their own net price list once their business account has been approved.

Sondex SL78TL-20 can be replaced by HEXCHANGE TS80-20H
TS80-20H
1:1: same port-to-port dimensions (519 × 92 mm) and connection 4× G2" external thread

Sondex SL78TL-30 can be replaced by HEXCHANGE TS80-30H
TS80-30H
1:1: same port-to-port dimensions (519 × 92 mm) and connection 4× G2" external thread

Sondex SL78TL-40 can be replaced by HEXCHANGE TS80-40H
TS80-40H
1:1: same port-to-port dimensions (519 × 92 mm) and connection 4× G2" external thread

Sondex SL78TL-50 can be replaced by HEXCHANGE TS80-50H
TS80-50H
1:1: same port-to-port dimensions (519 × 92 mm) and connection 4× G2" external thread

Sondex SL78TL-60 can be replaced by HEXCHANGE TS80-60H
TS80-60H
1:1: same port-to-port dimensions (519 × 92 mm) and connection 4× G2" external thread

Sondex SL78TL-80 can be replaced by HEXCHANGE TS80-80H
TS80-80H
1:1: same port-to-port dimensions (519 × 92 mm) and connection 4× G2" external thread

Sondex SL78TL-90 can be replaced by HEXCHANGE TS80-90H
TS80-90H
1:1: same port-to-port dimensions (519 × 92 mm) and connection 4× G2" external thread

Sondex SL78TL-120 can be replaced by HEXCHANGE TS80-120H
TS80-120H
1:1: same port-to-port dimensions (519 × 92 mm) and connection 4× G2" external thread
Replacing the Sondex SL78 with the HEXCHANGE TS80
Replacing a Sondex SL78 with the HEXCHANGE TS80 is a straight swap: port centres and connections are identical, so the existing pipes stay exactly where they are.
Port centres
519 × 92 mm
Connections
4× G2" external thread
Number of plates
20 to 120 plates, 8 versions
Stock
8 of 8 versions in stock
Read the number of plates from the nameplate of your Sondex SL78 and choose the HEXCHANGE TS80 with the same number in the table above. That version has the same length and comparable capacity; more plates means more capacity but also a longer unit. The HEXCHANGE TS80 is copper-brazed with stainless steel plates.
Want to be certain you pick the right version? Send us the type number or a photo of the nameplate via the contact form. Our specialists check the dimensions and send a no-obligation quote within one working day, including insulation and mounting materials if required.
Frequently asked questions about replacing the Sondex SL78
Will the HEXCHANGE TS80 fit my Sondex SL78 without modifications?
Yes. The replacement has the same port-to-port dimensions (519 × 92 mm) and the same connections (G2" external thread), so the existing pipework does not need to be modified.
Is the replacement for the Sondex SL78 available from stock?
8 of the 8 versions are in stock in our warehouse in Oosterhout, the Netherlands, and are delivered quickly. The other versions are available on request.
Which plate counts are available?
The replacements are available from 20 to 120 plates, in 8 versions. Choose the version with the same plate count as your current Sondex SL78.
What does it cost to replace a Sondex SL78?
Request a no-obligation quote; you will receive pricing within one working day. Call us for expert advice: +31 (0)162 429 068.
