Andrews
Andrews On/Off Switch C521AWH
On/off switch for Andrews water heaters, part number C521AWH.
At a glance
- Also known as 1821102
Showing prices
£15.91
£13.26 ex. VAT · VAT at 20%
Available to order · 3 working days
Available to order · 3 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 Andrews C521AWH is an on/off switch (standard auto) used in Andrews water heaters. It controls the power supply to the appliance, allowing it to be switched on and off at the unit. It is supplied as a water heater spare part.
Signs this part needs replacing
- The water heater will not switch on or off at the control
- The switch feels loose, stiff or fails to click
- Power to the appliance is intermittent
- Visible damage, scorching or discolouration around the switch
Before you order
- Check your appliance model against the fitment list above
- Confirm the part number C521AWH matches the switch being replaced
- Isolate the power supply before removing or fitting the switch
Compliance
| Barcode / EAN | 5039177517573 |
|---|---|
| Alternative numbers | 1821102 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ANDREWS WATER HEATERS ANDREWS HOT WATER SPARES | — | — | — | |
| ANDREWS WATER HEATERS CSC59 | — | — | — | |
| ANDREWS WATER HEATERS CSC78 | — | — | — | |
| ANDREWS WATER HEATERS CSC93 | — | — | — | |
| ANDREWS WATER HEATERS CSCL59 | — | — | — | |
| ANDREWS WATER HEATERS CSCL78 | — | — | — | |
| ANDREWS WATER HEATERS CSCL93 | — | — | — | |
| ANDREWS WATER HEATERS HI FLO 33/136 | — | — | — | |
| ANDREWS WATER HEATERS RSC 150 | — | — | — | |
| ANDREWS WATER HEATERS RSC 190 | — | — | — |
Fitment listings are a guide, not a guarantee. Plant-room assemblies get modified on site more often than not. Send us the GC number off the data badge and a photo of the existing valve and we will confirm before anything is dispatched.
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
No technical questions yet for this part.
Not sure which part?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.