Andrews
Andrews Exhausto Speed Controller C946
Andrews C946 Exhausto speed controller for compatible water heaters.
At a glance
- Part type: Exhausto speed controller
- Also known as 1821175
Showing prices
£448.19
£373.49 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 C946 is an Exhausto speed controller designed for Andrews water heaters. It regulates the speed of the exhaust fan to maintain correct combustion and flue performance. This controller is a spare part for specific Andrews HI FLO models.
Signs this part needs replacing
- The exhaust fan runs at a constant speed regardless of demand.
- The fan fails to start or runs intermittently.
- The boiler locks out with a fan or flue-related fault.
- Unusual noise from the fan motor during operation.
- Poor combustion or inconsistent hot water performance.
Before you order
- Confirm your appliance model is listed in the Fits section.
- Check the existing speed controller's part number matches C946.
- Ensure the replacement is suitable for the Exhausto fan system.
- Consult a qualified heating engineer if unsure.
Compliance
| Barcode / EAN | 5039192394609 |
|---|---|
| Alternative numbers | 1821175 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ANDREWS WATER HEATERS ANDREWS HOT WATER SPARES | — | — | — | |
| ANDREWS WATER HEATERS HI FLO L54/399 | — | — | — | |
| ANDREWS WATER HEATERS HI FLO L62/309 | — | — | — | |
| ANDREWS WATER HEATERS HI FLO L65/169 | — | — | — | |
| ANDREWS WATER HEATERS HI FLO L81/251 | — | — | — |
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.
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