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Siemens Outside Sensor LG-NI1000 QAC22

Siemens

Siemens Outside Sensor LG-NI1000 QAC22

Siemens QAC22 outside air temperature detector with an LG-NI1000 sensing element for heating control systems.

At a glance

  • Also known as 7550054
Manufacturer part no.
QAC22
Showing prices

£35.30

£29.42 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 working days
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

The Siemens QAC22 is an outside sensor with an LG-NI1000 sensing element, used to measure external air temperature for a heating control system. It is supplied as an outside air temperature detector, feeding the measured outdoor temperature back to the controls so flow temperature or heating curve settings can be adjusted. It is a general control accessory rather than an appliance-specific spare.

Before you order

  • Confirm the heating control or boiler requires an LG-NI1000 sensor characteristic, as the control input must match the sensing element.
  • Check the existing sensor model reference against QAC22 before ordering.
  • Consider the cable route and siting on the external wall, away from direct sunlight, flue outlets and other heat sources.
  • Check that the sensor can be reached for future testing and that the existing cable is in good condition.

Not sure which part?

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