The heat exchangers below are 1:1 replacements for the Kelvion GBS400H
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.

Kelvion GBS 400H-10 can be replaced by UNEX PBU11-10
UNEX PBU11-10
1:1: same port-to-port dimensions (281 × 72 mm) and connection G1" external thread

Kelvion GBS 400H-14 can be replaced by UNEX PBU11-14
UNEX PBU11-14
1:1: same port-to-port dimensions (281 × 72 mm) and connection G1" external thread

Kelvion GBS 400H-20 can be replaced by UNEX PBU11-20
UNEX PBU11-20
1:1: same port-to-port dimensions (281 × 72 mm) and connection G1" external thread

Kelvion GBS 400H-24 can be replaced by UNEX PBU11-24
UNEX PBU11-24
1:1: same port-to-port dimensions (281 × 72 mm) and connection G1" external thread

Kelvion GBS 400H-30 can be replaced by UNEX PBU11-30
UNEX PBU11-30
1:1: same port-to-port dimensions (281 × 72 mm) and connection G1" external thread

Kelvion GBS 400H-34 can be replaced by UNEX PBU11-34
UNEX PBU11-34
1:1: same port-to-port dimensions (281 × 72 mm) and connection G1" external thread

Kelvion GBS 400H-40 can be replaced by UNEX PBU11-40
UNEX PBU11-40
1:1: same port-to-port dimensions (281 × 72 mm) and connection G1" external thread

Kelvion GBS 400H-44 can be replaced by UNEX PBU11-44
UNEX PBU11-44
1:1: same port-to-port dimensions (281 × 72 mm) and connection G1" external thread

Kelvion GBS 400H-50 can be replaced by UNEX PBU11-50
UNEX PBU11-50
1:1: same port-to-port dimensions (281 × 72 mm) and connection G1" external thread

Kelvion GBS 400H-60 can be replaced by UNEX PBU11-60
UNEX PBU11-60
1:1: same port-to-port dimensions (281 × 72 mm) and connection G1" external thread

Kelvion GBS 400H-70 can be replaced by UNEX PBU11-70
UNEX PBU11-70
1:1: same port-to-port dimensions (281 × 72 mm) and connection G1" external thread

Kelvion GBS 400H-80 can be replaced by UNEX PBU11-80
UNEX PBU11-80
1:1: same port-to-port dimensions (281 × 72 mm) and connection G1" external thread

Kelvion GBS 400H-90 can be replaced by UNEX PBU11-90
UNEX PBU11-90
1:1: same port-to-port dimensions (281 × 72 mm) and connection G1" external thread

Kelvion GBS 400H-100 can be replaced by UNEX PBU11-100
UNEX PBU11-100
1:1: same port-to-port dimensions (281 × 72 mm) and connection G1" external thread
Replacing the Kelvion GBS400H with the UNEX PBU11
If you need to replace a Kelvion GBS400H, the UNEX PBU11 lets you carry on straight away: same port centres, same connections, so no changes to the pipework.
Port centres
281 × 72 mm
Connections
G1" external thread
Number of plates
10 to 100 plates, 14 versions
Stock
13 of 14 versions in stock
Read the number of plates from the nameplate of your Kelvion GBS400H and choose the UNEX PBU11 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 UNEX PBU11 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 Kelvion GBS400H
Will the UNEX PBU11 fit my Kelvion GBS400H without modifications?
Yes. The replacement has the same port-to-port dimensions (281 × 72 mm) and the same connections (G1" external thread), so the existing pipework does not need to be modified.
Is the replacement for the Kelvion GBS400H available from stock?
13 of the 14 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 10 to 100 plates, in 14 versions. Choose the version with the same plate count as your current Kelvion GBS400H.
What does it cost to replace a Kelvion GBS400H?
Request a no-obligation quote; you will receive pricing within one working day. Call us for expert advice: +31 (0)162 429 068.
