heat exchanger replacement

The heat exchangers below are 1:1 replacements for the SWEP B25

Fits directly without modifying your pipework — delivered quickly from our own stock.

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Installers and service companies order from their own net price list once their business account has been approved.

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UNEX PBU20-10 — replacement for SWEP B25THX10

SWEP B25THX10 can be replaced by UNEX PBU20-10

UNEX PBU20-10

In stock — fast delivery

1:1: same port-to-port dimensions (479 × 72 mm) and connection G1" external thread

UNEX PBU20-14 — replacement for SWEP B25THX14

SWEP B25THX14 can be replaced by UNEX PBU20-14

UNEX PBU20-14

In stock — fast delivery

1:1: same port-to-port dimensions (479 × 72 mm) and connection G1" external thread

UNEX PBU20-20 — replacement for SWEP B25THX20

SWEP B25THX20 can be replaced by UNEX PBU20-20

UNEX PBU20-20

In stock — fast delivery

1:1: same port-to-port dimensions (479 × 72 mm) and connection G1" external thread

UNEX PBU20-24 — replacement for SWEP B25THX24

SWEP B25THX24 can be replaced by UNEX PBU20-24

UNEX PBU20-24

In stock — fast delivery

1:1: same port-to-port dimensions (479 × 72 mm) and connection G1" external thread

UNEX PBU20-30 — replacement for SWEP B25THX30

SWEP B25THX30 can be replaced by UNEX PBU20-30

UNEX PBU20-30

In stock — fast delivery

1:1: same port-to-port dimensions (479 × 72 mm) and connection G1" external thread

UNEX PBU20-34 — replacement for SWEP B25THX34

SWEP B25THX34 can be replaced by UNEX PBU20-34

UNEX PBU20-34

In stock — fast delivery

1:1: same port-to-port dimensions (479 × 72 mm) and connection G1" external thread

UNEX PBU20-40 — replacement for SWEP B25THX40

SWEP B25THX40 can be replaced by UNEX PBU20-40

UNEX PBU20-40

In stock — fast delivery

1:1: same port-to-port dimensions (479 × 72 mm) and connection G1" external thread

UNEX PBU20-44 — replacement for SWEP B25THX44

SWEP B25THX44 can be replaced by UNEX PBU20-44

UNEX PBU20-44

In stock — fast delivery

1:1: same port-to-port dimensions (479 × 72 mm) and connection G1" external thread

UNEX PBU20-50 — replacement for SWEP B25THX50

SWEP B25THX50 can be replaced by UNEX PBU20-50

UNEX PBU20-50

In stock — fast delivery

1:1: same port-to-port dimensions (479 × 72 mm) and connection G1" external thread

UNEX PBU20-70 — replacement for SWEP B25THX70

SWEP B25THX70 can be replaced by UNEX PBU20-70

UNEX PBU20-70

In stock — fast delivery

1:1: same port-to-port dimensions (479 × 72 mm) and connection G1" external thread

UNEX PBU20-80 — replacement for SWEP B25THX80

SWEP B25THX80 can be replaced by UNEX PBU20-80

UNEX PBU20-80

On order

1:1: same port-to-port dimensions (479 × 72 mm) and connection G1" external thread

UNEX PBU20-90 — replacement for SWEP B25THX90

SWEP B25THX90 can be replaced by UNEX PBU20-90

UNEX PBU20-90

Available on request

1:1: same port-to-port dimensions (479 × 72 mm) and connection G1" external thread

UNEX PBU20-100 — replacement for SWEP B25THX100

SWEP B25THX100 can be replaced by UNEX PBU20-100

UNEX PBU20-100

Available on request

1:1: same port-to-port dimensions (479 × 72 mm) and connection G1" external thread

UNEX PBU20-10 — replacement for SWEP B25x10

SWEP B25x10 can be replaced by UNEX PBU20-10

UNEX PBU20-10

In stock — fast delivery

1:1: same port-to-port dimensions (479 × 72 mm) and connection G1" external thread

UNEX PBU20-14 — replacement for SWEP B25x14

SWEP B25x14 can be replaced by UNEX PBU20-14

UNEX PBU20-14

In stock — fast delivery

1:1: same port-to-port dimensions (479 × 72 mm) and connection G1" external thread

UNEX PBU20-20 — replacement for SWEP B25x20

SWEP B25x20 can be replaced by UNEX PBU20-20

UNEX PBU20-20

In stock — fast delivery

1:1: same port-to-port dimensions (479 × 72 mm) and connection G1" external thread

UNEX PBU20-24 — replacement for SWEP B25x24

SWEP B25x24 can be replaced by UNEX PBU20-24

UNEX PBU20-24

In stock — fast delivery

1:1: same port-to-port dimensions (479 × 72 mm) and connection G1" external thread

UNEX PBU20-30 — replacement for SWEP B25x30

SWEP B25x30 can be replaced by UNEX PBU20-30

UNEX PBU20-30

In stock — fast delivery

1:1: same port-to-port dimensions (479 × 72 mm) and connection G1" external thread

UNEX PBU20-34 — replacement for SWEP B25x34

SWEP B25x34 can be replaced by UNEX PBU20-34

UNEX PBU20-34

In stock — fast delivery

1:1: same port-to-port dimensions (479 × 72 mm) and connection G1" external thread

UNEX PBU20-40 — replacement for SWEP B25x40

SWEP B25x40 can be replaced by UNEX PBU20-40

UNEX PBU20-40

In stock — fast delivery

1:1: same port-to-port dimensions (479 × 72 mm) and connection G1" external thread

UNEX PBU20-44 — replacement for SWEP B25x44

SWEP B25x44 can be replaced by UNEX PBU20-44

UNEX PBU20-44

In stock — fast delivery

1:1: same port-to-port dimensions (479 × 72 mm) and connection G1" external thread

UNEX PBU20-50 — replacement for SWEP B25x50

SWEP B25x50 can be replaced by UNEX PBU20-50

UNEX PBU20-50

In stock — fast delivery

1:1: same port-to-port dimensions (479 × 72 mm) and connection G1" external thread

UNEX PBU20-70 — replacement for SWEP B25x70

SWEP B25x70 can be replaced by UNEX PBU20-70

UNEX PBU20-70

In stock — fast delivery

1:1: same port-to-port dimensions (479 × 72 mm) and connection G1" external thread

UNEX PBU20-80 — replacement for SWEP B25x80

SWEP B25x80 can be replaced by UNEX PBU20-80

UNEX PBU20-80

On order

1:1: same port-to-port dimensions (479 × 72 mm) and connection G1" external thread

UNEX PBU20-90 — replacement for SWEP B25x90

SWEP B25x90 can be replaced by UNEX PBU20-90

UNEX PBU20-90

Available on request

1:1: same port-to-port dimensions (479 × 72 mm) and connection G1" external thread

UNEX PBU20-100 — replacement for SWEP B25x100

SWEP B25x100 can be replaced by UNEX PBU20-100

UNEX PBU20-100

Available on request

1:1: same port-to-port dimensions (479 × 72 mm) and connection G1" external thread

The SWEP B25 is common in heat pump, heating and cooling systems. When replacement is needed, the UNEX PBU20 offers a 1:1 alternative: the port-to-port dimensions are identical (479 × 72 mm) and the unit has the same G1" male thread connections. You therefore do not need to modify the pipework — the PBU20 takes the exact place of the B25. The PBU20 is a compact brazed plate heat exchanger, built from AISI 316L stainless steel plates, copper-brazed. The series is available from 10 to 100 plates; choose the version with the same number of plates as your current B25. For applications with a different connection size, the PBU20 is also available with G5/4" male thread or SAE connection. We deliberately keep a large stock of the PBU20: most versions are held at our warehouse in Oosterhout (the Netherlands) and are delivered quickly. Matching insulation (cold insulation against condensation or a thermal insulation cover) can be ordered along with it. Questions about the right version? Call +31 (0)162 429 068 or request a no-obligation quotation — you will have a quote within one working day.

Frequently asked questions about replacing the SWEP B25

Will the UNEX PBU20 fit my SWEP B25 without modifications?

Yes. The replacement has the same port-to-port dimensions (479 × 72 mm) and the same connections (G1" external thread), so the existing pipework does not need to be modified.

Is the replacement for the SWEP B25 available from stock?

20 of the 26 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 26 versions. Choose the version with the same plate count as your current SWEP B25.

What does it cost to replace a SWEP B25?

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

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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.

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