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Thermostat -Obsolete

Part number (MPN)
321033
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Source
retailer parts list
checked 2026-11-06
Fitting notes

Work on gas appliances must be carried out by a Gas Safe registered engineer. Check the model and serial number on the boiler data plate. Source: a parts retailer's list, not the manufacturer's: confirm the part number on the data plate or with the manufacturer before ordering.

Compatible appliances

Always check the model and serial number on the data plate before ordering.

Frequently asked questions

Which appliances does 321033 fit?

The sources we checked list 321033 (Thermostat -Obsolete, Ariston) for: Ariston STT 125 UK, Ariston STT 150 UK, Ariston STT 210 UK, SB 125 from serial no. 9700000, SB 150 from serial no. 9700000, SB 200 from serial no. 9700000. Always check the model and serial number on the data plate before ordering.

Does 321033 have equivalent or superseded part numbers?

The sources we checked list no equivalents for 321033. Ask a Ariston stockist to confirm.

What should I check before fitting 321033?

Work on gas appliances must be carried out by a Gas Safe registered engineer. Check the model and serial number on the boiler data plate. Source: a parts retailer's list, not the manufacturer's: confirm the part number on the data plate or with the manufacturer before ordering.

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Some lists are dated and the part may have been superseded. Information only, compatibility not guaranteed.