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Short answer: the Dyson V8 is the better machine, with up to 40 minutes of runtime against the V7’s 30, a little more suction, whole-machine filtration and a quieter motor. The V7 is still a capable vacuum for smaller homes, and it’s usually cheaper second-hand or refurbished. If you already own either one and it has started fading, a new battery or a service is usually far cheaper than upgrading.
Dyson V7 vs V8 at a glance
| Dyson V7 | Dyson V8 | |
|---|---|---|
| Maximum runtime (new battery, no motorised tool) | Up to 30 minutes | Up to 40 minutes |
| Suction | Strong for its size | Slightly stronger |
| Filtration | Standard | Sealed whole-machine filtration |
| Noise | Louder | Quieter |
| Typical price today | Lower | Higher |
Runtime figures are Dyson’s maximums with a new battery on the lowest power setting. Using a motorised head or boost mode shortens it a lot, and every battery loses capacity with age.
Runtime
The extra ten minutes is the difference most owners notice. In a larger home, a V8 can usually finish a full clean on one charge where a V7 might not. But battery age matters more than the model: a V8 on a tired original battery will often run for less time than a V7 with a fresh one.
Suction and cleaning
The V8’s motor is a little stronger, but for most homes the difference is small. Both handle hard floors, rugs and pet hair well when their filters are clean and nothing is blocked. If either machine feels weak, check the filters and look for blockages before blaming the motor.
Filtration and allergies
The V8 seals the whole machine so fine dust is held in rather than leaking out around the body. If someone in your home has allergies, that is the strongest reason to choose the V8.
Noise
The V8 is noticeably quieter than the V7, which matters if you vacuum with young children around or in an apartment.
Which should you buy?
- Choose a V7 if price matters most, your home is small, and you mostly do quick clean-ups.
- Choose a V8 if you want a full clean on one charge, have allergies or pets, or want a quieter machine.
Whichever you choose second-hand, ask about battery age and runtime, check the filters, and confirm what’s included. Our guide to buying a refurbished Dyson covers what to ask.
Repair or upgrade?
When a V7 or V8 starts losing power, the usual causes are a worn battery, blocked or damp filters, or a cleaner head clogged with hair. All of those can be fixed for much less than the cost of a newer machine. Upgrading makes more sense if the body is cracked, the motor has failed, or you need features older models don’t have.
A Dusti service is A$95, with optional pickup and return across Melbourne for A$30. Replacement batteries and parts are quoted separately. Dyson V8 repairs · Book a Dyson service · Dyson battery care
