Dyson TP4A vs TP7A

In this Dyson TP4A vs TP7A review, we will compare two popular air purifiers from the Singapore-based brand of household appliances.

Both are able to remove pollutants, gases and odours, and act as a fan at the same time. Both are certified asthma and allergy friendly. So should you opt for the Dyson Pure Cool TP4A, or is the Dyson Purifier Cool Autoreact TP7A the better choice?

This side-by-side comparison will help you find out.

Comparison: Dyson TP4A vs TP7A – What are the Differences?

Coverage Area

Dyson recommends the TP4A for rooms with a surface area of up to 27 m² (290 ft²), while the TP7A is suitable for up to 43 m² (460 ft²). Both devices could be used in even larger rooms, with the amount of air changes per hour (ACH) decreasing accordingly.

To project purified and/or cooled air evenly throughout the room, the TP4A and TP7A combine Dyson’s Air Multiplier technology with oscillation. Depending on where you place them, you can choose between 45, 90, 180, and 350 degrees.

Clean Air Delivery Rate

Using a pre-filter and a HEPA filter, the TP4A and TP7A capture up to 99.97% of allergens and pollutants as small as 0.3 μm and are certified for being asthma and allergy-friendly by the Asthma and Allergy Foundation of America.

Furthermore, both come with a layer of activated carbon, which allows them to remove odours and gases. The TP4A is more effective at capturing formaldehyde, while the TP7A has the upper hand when it comes to trapping particles.

Working Noise

Running at full speed, both models operate at around 60 decibels (dB), with the TP4A technically speaking being less noisy. When set to sleep mode, the TP7A purifies the air at around 38 dB, compared to 42 dB for its competitor.

The TP4A and the TP7A can also be set to automatic mode, in which they will run only as fast and therefore as loud as needed. As soon as pollution levels start to drop, their fan speed and noise level will decrease accordingly.

Sensors & Display

Integrated sensors constantly analyze the air inside the room and provide the TP4A and TP7A with the current temperature, humidity, and pollution levels. Changes are detected almost in real-time and can be used as input for the automatic mode (see above).

In both models, the current Air Quality Index (AQI) and details about PM 2.5, PM 10, VOCs, NO2, SO2, temperature, humidity, as well as the remaining filter life can be viewed on a built-in LCD screen.

Connectivity & Compatibility

Unfortunately, neither the TP4A nor the TP7A can be connected to your smartphone or voice assistant. If you would like to be able to monitor and control your air purifier remotely, consider the TP04 and TP07 variants.

Weight & Dimensions

In the last round of this Dyson TP4A vs TP7A comparison, we will have a quick look at the weight and dimensions of the two devices. While the differences in base diameter and height are negligible, the TP7A does have a slightly lower weight of 4.65 kg (10.25 lbs).

Conclusion: Dyson TP4A vs TP7A – Which is the Better Air Purifier?

If you have a relatively small room to purify, the Dyson Pure Cool TP4A might just be the right fit for your needs. It is almost as effective at removing particles as its successor, and even has the upper hand when it comes to capturing formaldehyde.

For slightly larger rooms or higher pollution levels, opt for the Dyson Purifier Cool Autoreact TP7A instead. It convinces with a ten percent higher Clean Air Delivery Rate (CADR) for pollutants such as PM 2.5 and is also a better choice for light sleepers.

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