Understanding Dyson’s Confusing V and SV Numbers
Today, it’s all about Dyson “V” Models and “SV” Models: Dyson loves to confuse you. They do it with tool fitting sockets and adaptors, and they do it with model numbers, too.
We have always been convinced it’s done on purpose to thwart and confuse parts suppliers and the aftermarket. It creates a lot of returns because people don’t read properly. Or maybe parts sellers don’t give enough detail sometimes.
We are going to demystify this today. Let’s start here: V is NOT the same as SV.
For example, people sometimes buy spare parts for an SV11 as they have a V11, because SV11 and V11 are the same, right?
No – they’re not! Far from it. Let’s dive in……..
Dyson “V” Models and “SV” Models
If you’ve ever tried to match a Dyson cordless vacuum to the correct parts or accessories, you’ve probably run into their perplexing numbering system. On the surface, you’ll see familiar consumer names like V6, V7, V8, V10, V11, V12, V15, and so on. But hidden under the handle or on the spec label is another number, usually starting with “SV” – and that’s where the confusion begins.
This article demystifies the relationship between Dyson’s V and SV numbers, so you can understand what machine you actually own and what fits it.
V Numbers vs. SV Numbers
Dyson uses two numbering systems:
- V-numbers: These are the marketing names we all know — V6, V7, V8, etc.
- SV-numbers: Internal model numbers Dyson uses to identify technical variants (e.g., SV03, SV11, SV15, etc.)
Many V-models have several SV numbers beneath them depending on regional specs, bin sizes, batteries, included heads, or accessory packs.
Comprehensive Dyson V-to-SV Table
| Consumer Name | SV Code(s) | Years | Key Differences |
|---|---|---|---|
| V6 | SV03, SV04, SV05, SV09 | 2015 | Same base vacuum, varied tools/kits |
| V7 | SV11, SV37 | 2017 | Smaller battery than V8, ~30 min runtime |
| V8 | SV10, SV25 | 2016 | Same vacuum, differing heads/tools |
| V10 | SV12, SV13, SV27 | 2018 | Tool/accessory variations |
| V11 | SV14, SV15, SV17, SV28 | 2019 | LCD or non-LCD, bin size/toolset varies |
| V11 Outsize | SV16, SV29 | 2020 | Bigger bin and cleaner head |
| V12 Slim | SV20, SV30 | 2020 | Compact/lightweight redesign |
| V15 Detect | SV22 | 2021 | Laser head, piezo dust sensor |
| Gen5 Detect | SV23 | 2022 | New motor, improved suction |
| Gen5 Outsize | SV24 | 2023 | Large bin/head variant of Gen5 |
| Micro 1.5kg | SV21, SV33 | 2023 | Ultra-lightweight cordless for hard floors |
| Omni-glide | SV19 | 2021 | Ultra-lightweight cordless for hard floors |
Examples That Confuse People
- SV11 is NOT a V11 — it’s a V7.
- V11 models include SV14, SV15, SV17, SV28 — different trims, same motor.
- V8 machines can be SV10 or SV25 — some come with different floorheads but share batteries.
- An SV10 is not a V10, its a V8.
- An SV15 is not a V15, its a V11.
- V8 and V11 machines each also have two possible batteries. Now that is a pain in the backside for parts sellers.
Why Does Dyson Do This?
They say it’s not just to confuse you (although it feels that way). The SV numbers allow Dyson to:
- Track global versions and hardware specs internally
- Ensure correct accessories and firmware per model
- Sell different variants (Animal, Absolute, Torque Drive, etc.) under the same V model name
Real-World Implications
If you’re buying spares or batteries, the V-number alone may not be enough. Always check the SV number under the handle or on the machine’s rating label to be sure.
Quick Reference Table
| V-series | SV Code(s) | Same Vacuum? |
|---|---|---|
| V6 | SV03–SV09 | Yes |
| V7 | SV11, SV37 | Yes |
| V8 | SV10, SV25 | Yes |
| V10 | SV12–SV27 | Yes |
| V11 | SV14–SV28 | Yes |
| V11 Outsize | SV16, SV29 | Yes |
| V12 | SV20, SV30 | Yes |
| V15 | SV22 | Yes |
| Gen5 | SV23 | Yes |
| Gen5 Outsize | SV24 | Yes |
| Micro 1.5kg | SV21, SV33 | Yes |
| Omni-glide | SV19 | Yes |
How to Check Your Dyson Model Properly
- Look underneath the handle or battery pack – you’ll find something like “SV14” or “SV11”.
- Use that number when searching for compatible parts.
- If you’re unsure, match the battery tab style or head connector to online listings.
Conclusion
Next time you’re hunting down a Dyson battery, charger, or filter, don’t rely on the name on the box — check the SV number instead. That’s the key to unlocking what version you actually have. Armed with this knowledge, you can stop guessing and get the right parts the first time.
Questions? You can use the box below.
You can buy cordless Dyson spares online at Manchester Vacs. Click the button below to go there.
