Vaillant
Vaillant Pump 0020180074
Vaillant circulation pump, part number 0020180074, for aroTHERM VWZ MWT 150 appliances.
At a glance
- Also known as 1386428
Showing prices
£546.44
£455.37 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 Vaillant pump, part number 0020180074, is a circulation pump used in Vaillant aroTHERM VWZ MWT 150 appliances. It circulates water through the appliance circuit, and a failure will affect heating and hot water performance.
Signs this part needs replacing
- Reduced heating or hot water output
- Unusual noise or vibration from the pump
- Pump fails to run or runs intermittently
- Leaks from the pump body or its connections
- Flow-related fault codes shown on the appliance
Before you order
- Confirm your appliance is a Vaillant aroTHERM VWZ MWT 150
- Check the part number on the existing pump against 0020180074
- Consult a qualified heating engineer if you are unsure of the diagnosis
Compliance
| Alternative numbers | 1386428 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT VWZ MWT 150 | — | — | — | |
| VAILLANT aroTHERM VWZ MWT 150 | — | — | — | |
| VAILLANT aroTHERM VWZ MWT 150 (2013-2021) | — | — | — |
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.