heat exchanger replacement

The heat exchangers below are 1:1 replacements for the GEA WTT GEA-H25

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.

Request a business account
UNEX PBG20H-30 — replacement for GEA-H25-30

GEA WTT GEA-H25-30 can be replaced by UNEX PBG20H-30

UNEX PBG20H-30

On order

1:1: same port-to-port dimensions (476 × 69 mm) and connection 22,35 mm solder or G1" external thread

UNEX PBG20H-40 — replacement for GEA-H25-40

GEA WTT GEA-H25-40 can be replaced by UNEX PBG20H-40

UNEX PBG20H-40

In stock — fast delivery

1:1: same port-to-port dimensions (476 × 69 mm) and connection 22,35 mm solder or G1" external thread

UNEX PBG20H-50 — replacement for GEA-H25-50

GEA WTT GEA-H25-50 can be replaced by UNEX PBG20H-50

UNEX PBG20H-50

In stock — fast delivery

1:1: same port-to-port dimensions (476 × 69 mm) and connection 22,35 mm solder or G1" external thread

UNEX PBG20H-60 — replacement for GEA-H25-60

GEA WTT GEA-H25-60 can be replaced by UNEX PBG20H-60

UNEX PBG20H-60

Available on request

1:1: same port-to-port dimensions (476 × 69 mm) and connection 22,35 mm solder or G1" external thread

UNEX PBG20H-80 — replacement for GEA-H25-80

GEA WTT GEA-H25-80 can be replaced by UNEX PBG20H-80

UNEX PBG20H-80

Available on request

1:1: same port-to-port dimensions (476 × 69 mm) and connection 22,35 mm solder or G1" external thread

No waiting weeks for the original supplier: when your GEA-H25 needs replacing, HEXCHANGE supplies the UNEX PBG20 as the 1:1 alternative. The port-to-port dimensions are identical (476 × 69 mm) and the connections correspond: 22.35 mm solder or G1" male thread (combi connection: both usable). The pipework thus remains untouched, whether you solder or screw. The PBG20 is a brazed plate heat exchanger with plates of AISI 316L stainless steel, copper brazed. For the H25 series, versions from 30 to 80 plates are available; choose the plate count of your current exchanger. The GEA-H25-40, for example, is replaced by the PBG20H-40. Some versions are in stock in our warehouse in Oosterhout (the Netherlands), the other sizes are quickly available on request. Look up your type number in the table above and you will see straight away which PBG20 you need. Need help determining the right version? Call +31 (0)162 429 068 or request a no-obligation quote — you will receive our quotation within one working day.

Frequently asked questions about replacing the GEA WTT GEA-H25

Will the UNEX PBG20 fit my GEA WTT GEA-H25 without modifications?

Yes. The replacement has the same port-to-port dimensions (476 × 69 mm) and the same connections (22,35 mm solder, G1" external thread), so the existing pipework does not need to be modified.

Is the replacement for the GEA WTT GEA-H25 available from stock?

2 of the 5 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 30 to 80 plates, in 5 versions. Choose the version with the same plate count as your current GEA WTT GEA-H25.

What does it cost to replace a GEA WTT GEA-H25?

Request a no-obligation quote; you will receive pricing within one working day. Call us for expert advice: +31 (0)162 429 068.

Heat exchanger news, once a month

New series, replacement options and technical articles. No offers, no drip campaigns.

You will first receive a confirmation email. How we handle your data is described in our privacy policy.

HEXCHANGE
Contact form

Response within one working day

+31 (0)162 429 068

On working days from 8:30 to 17:00

sales@hexchange.eu

Response within one working day

Heat exchanger news, once a month

New series, replacement options and technical articles. No offers, no drip campaigns.

You will first receive a confirmation email. How we handle your data is described in our privacy policy.

Customer service

HEXCHANGE

De Wetering 24

4906 CT Oosterhout

the Netherlands

VAT: NL852912407B01

Copyright © 2026 All rights reserved by HEXCHANGE