The Dyson TP07 costs around £269-350 depending on where you buy it. The Levoit Core 400S costs around £160. Both are HEPA air purifiers with smart features and app control. The question is whether the Dyson's additional cost is justified by meaningfully better performance.
The short answer: it isn't, for most people. The Dyson charges a significant premium for design, brand equity, the dual fan function, and the Dyson app ecosystem. The core filtration performance is competitive but not notably superior to the Levoit at less than half the price. Where it does pull ahead — the fan function, the build quality, the quieter high-speed operation — those advantages matter to some people and not at all to others.
Let's go through it properly.
Filtration Performance
Both the Dyson TP07 and the Levoit Core 400S use 360° glass HEPA and activated carbon filters. Both claim to capture 99.97% of particles to 0.3 microns — standard True HEPA specification.
Independent tests (HouseFresh, Techradar, and others) have found that both purifiers perform well on particle removal in real-room tests. The Levoit Core 400S has a published CADR of 400 m³/h. Dyson does not publish CADR figures for its purifiers — a notable omission that makes direct comparison harder and favours Dyson's marketing over transparent performance data.
Verdict: filtration performance is broadly comparable. The Levoit Core 400S cleans more air per hour at its stated specification. Dyson's lack of published CADR makes it impossible to state whether it matches this.
Smart Features
Dyson MyDyson app: Clean, well-designed, shows real-time air quality data across multiple pollutant types including NO2, VOCs and particulate matter. Historical data, scheduling, and automatic mode all function reliably. The Dyson link to Alexa and Google Home is solid.
Levoit VeSync app: Less visually polished but functional. Shows PM2.5 data in real-time, supports scheduling, Alexa and Google Assistant integration. The Core 400S uses a laser PM2.5 sensor that tracks particle levels accurately.
The Dyson app provides more types of air quality data — multiple pollutant readings versus Levoit's PM2.5 focus. Whether that additional granularity is useful in a domestic context is debatable. If you want to know whether NO2 levels rise when you're cooking with gas, the Dyson tells you. If you want to know whether overall air particle quality is improving, both tell you that.
Verdict: Dyson has a better app with more data. The Levoit app is adequate for most users.
Fan Function
The Dyson TP07 is a purifier and a cooling fan. The bladeless fan design projects amplified airflow across a room, effectively replacing a separate fan. In summer, this is genuinely useful — you get air purification and air circulation from a single device rather than two.
The Levoit Core 400S is a purifier only. It moves air through the unit for filtration but doesn't project it as a fan.
If you want one device for air purification in winter and a fan in summer, the Dyson's value proposition improves significantly. If you're happy running a purifier alongside a separate fan (which you might already own), this distinction is irrelevant.
Verdict: Dyson wins if you want the fan function. If not, you're paying for something you won't use.
Noise
Dyson's TP07 is notably quiet at lower speeds — it benefits from the bladeless fan design which distributes airflow more evenly and allows lower RPMs for equivalent air movement. On its sleep mode, it's impressively quiet for a device that's also acting as a fan.
The Levoit Core 400S runs at 24dB in sleep mode, which is quiet but not ultra-quiet. Both are usable in a bedroom.
Verdict: Dyson is quieter at lower speeds, which matters if this is going in a bedroom.
Running Costs
This is where Dyson takes a hit.
The Dyson TP07 uses a combination glass HEPA + carbon filter (part 965432-01). Genuine Dyson replacement filters cost around £45-55 on Amazon UK and need replacing every 12 months under normal use.
The Levoit Core 400S replacement filter costs around £35 and also lasts around six to eight months. Annual filter cost is roughly £45-70 depending on usage.
The filter costs are similar in absolute terms. But the Dyson unit costs £100-150 more to buy in the first place, so you're already behind before you factor in filters.
Verdict: running costs are comparable, but the Dyson's higher purchase price means total cost of ownership is significantly higher over three to five years.
Summary
| Dyson TP07 | Levoit Core 400S | |
|---|---|---|
| Price | ~£270-350 | ~£160 |
| CADR | Not published | 400 m³/h |
| Filtration | True HEPA + carbon | True HEPA H13 + carbon |
| Smart features | Excellent (more data types) | Good (PM2.5 focus) |
| Fan function | Yes (bladeless cooling fan) | No |
| Noise (sleep) | Very quiet | 24dB |
| Filter cost | ~£45-55/year | ~£35-70/year |
| App | MyDyson (polished) | VeSync (functional) |
Get the Dyson if: you want a combined purifier and fan, you care about multiple pollutant data in the app, design matters to you, or you're in a room where the quieter high-speed operation is worth paying for.
Get the Levoit if: purification performance per pound is the priority, you don't need the fan function, and you're happy with an app that shows PM2.5 rather than ten different pollutant types.
For most people, the Levoit Core 400S is the better buy. See our bedroom air purifier guide for quiet sleep-focused picks, our large room guide if you have a big space, or the full air purifier roundup for all options.