Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Glow-worm system pressure sensor 0020038532

Glow-worm

Glow-worm system pressure sensor 0020038532

Genuine Glow-worm water pressure sensor, part 0020038532, for Glow-worm system boilers.

At a glance

  • Also known as 1338363, N2148-F, GLOWWORM0020038532
  • Isolate electrical power before removing the old sensor; fitting should be carried out by a Gas Safe registered engineer
Manufacturer part no.
0020038532
Showing prices

£60.83

£50.69 ex. VAT · VAT at 20%

In stock
Cut-off passed — dispatches next working day
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

A Glow-worm system pressure sensor, part 0020038532 (manufacturer reference GW95.0252). Pressure sensors monitor the water pressure in a sealed central heating system and signal the boiler's control board so it can shut down if pressure runs outside a safe range.

Signs this part needs replacing

  • Boiler shows a low- or high-pressure fault despite the system being correctly filled
  • Pressure reading on the boiler display fluctuates or drops to zero
  • Boiler locks out intermittently with no leak found
  • Heating or hot water cuts out without warning

Before you order

  • Confirm the part number on your existing sensor reads 0020038532
  • Check the system is correctly pressurised before assuming the sensor has failed
  • Isolate electrical power before removing the old sensor; fitting should be carried out by a Gas Safe registered engineer

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.