How Do I Know When My Dyson Filter Needs Changing?

Air purifiers are used to sanitize the atmosphere against allergies, viruses, and other contaminants. This process is carried out with the help of a HEPA filter present in a Dyson Air Purifier. But how do I know when to change my Dyson filter?

The purifier will notify you when the filter needs to be changed via the display. That is, the “F” with three lines by its side will display when it’s time for filter replacement. In addition, the Dyson link app can also be used to track the filter’s life.

The spread of airborne pollutants, especially during and after the COVID-19, has been the focus of experts. However, solutions such as the Dyson Air Purifier have been made to keep humans free from airborne hazardous pollutants. Continue reading to know the function and how a Dyson Air Purifier works.

What Does F Mean On My Dyson Fan?

When you change your TP01 Pure Cool filter, the flashing “F” will remain until the reset filter indicator light. Therefore, this tells you that the “F” on your Dyson Air Purifier means you should reset your filter light properly. To reset the filter light, press and hold the standby ON/OFF button on the remote for six seconds.

How Do I Know My Dyson Filter Needs a New Filter?

The F with three vertical lines indicates that the filter on your TP01 needs to be changed. This means that when the “F” with three vertical lines lights up, it’s telling you to change your filter. Meanwhile, the filter is available for purchase on the Dyson website or any authorized Dyson retailer that sells our purifier filters.

How Do I Reset My Dyson Filter Indicator?

  • To reset the filter indicator, press and hold the ‘Standby ON/OFF button on the remote control for six seconds after reassembling your purifier.
  • The Dyson Link app can also be used to reset the filter indicator. Select Settings > Filter life > Reset from the drop-down menu.

How Long Can My Dyson Filter Last?

Several filters do not last indefinitely. However, if you run the air purifier for 12 hours a day, the filters should last around a year, but most households will not need to run it that long.

Can You Wash And Reuse Dyson Filter?

The answer is no if your HEPA filter is not clearly labeled as washable or “permanent.” You can clean the filter with water, tap off excess dust, or vacuum some dust off of it. However, it may likely damage the fiber mesh that permits the filter to capture particles from the air.

Why Is My Dyson Filter Light Flashing?

The filter indicator will occasionally blink when the filter unit is not installed correctly. Return the filter unit to its open position and twist clockwise until it clicks into place to reinstall it.

What Does It Mean When My Dyson Flashes Blue 10 times?

The battery is low on charge when a flashing blue light appears. A fast flashing blue light indicates that there is no power or a temporary malfunction (e.g. check filter or for blockages).

What Does E Mean To A Dyson Air Purifier?

E is not a bad grade in school. However, when you try to use the purifier and see a solid ‘E,’ it means the equipment has stopped working properly.

How Accurate Is Dyson Air Purifier Filter?

The Dyson Pure Cool TP01 is a tower fan with a HEPA air purifier designed to handle a large area. Pollen, dust, mold spores, germs, and pet dander are all said to be removed, along with “99.97% of allergens and pollutants as small as 0.3 millimeters.”

Dyson Air Purifier Models

There is a different available model of Dyson Air Purifier. These are:

Dyson Pure Cool™ TP01 purifying fan (White/Silver)

99.97% of pollutants and allergens as small as 0.3 microns are removed from the atmosphere. The Dyson Link app is not compatible.


Cools You When Needed: When required, a strong stream of pure airflow can be used to cool you down.

Captures Pollutants And Gasses: The 360 filtration system uses activated carbon to eliminate odors and gasses. Also, its HEPA filter collects 99.97% of particles smaller than 0.3 microns, such as pollen, germs, and pet dander.

Purifies The Entire Space: Air Multiplier™ technology is only found in Dyson purifiers. It generates enough circulation power to suck even far-flung pollutants into the machine, resulting in cleansed air being projected throughout the room.

Oscillates Up To 70°: The oscillation may be adjusted to project cleansed air across the space.

Using A Remote Control: To store neatly on the machine, it’s curved and magnetized.

Safe And Simple To Maintain: There are no fast-spinning blades or clumsy grilles.

Filter Maintenance Is Simple: The filter may be changed quickly and easily. On the machine, there are automatic filter-life notifications.

Parent Tested Parents Approved: The PTPA stamp of approval has been given to this product. Families may rely on this sign of approval.

Certified Asthma And Allergy Friendly: The Asthma and Allergy Foundation of America has verified Dyson purifiers to be asthma and allergy-friendly.

Dyson Purifier Cool™ TP07 (Black/Nickel)

Dyson’s most recent purifiers combine superior filtration with sophisticated sensing. A HEPA filter collects 99.97% of particles 0.3 microns in size, while an activated carbon filter eliminates gasses and odors. In addition, Dyson air purifiers use Air Multiplier™ technology to purify the entire room.


It Cools You When Needed: Over 77 gallons per second of cool airflow is projected.

Mode Of Backward Airflow: Airflow can be diverted through the machine’s rear. You will be purified without being cooled.

It’s Now 20% Quieter: It’s 20% quieter than the previous model, thanks to acoustic engineering that reduces turbulence.

App Control For Dyson Air Purifier Link: The Dyson Link app allows you to control and monitor your air quality from anywhere.

Voice command: With compatible voice services, you may control it hands-free. Amazon Alexa, Apple Siri, and Google Home are all supported. 

Oscillates Up To 350 Times Per Second: The oscillation may be adjusted to project cleansed air across the space.

Mode For The Night: It uses the quietest settings and a muted display to monitor and purify.

Filter Maintenance Is Simple: The filter may be changed quickly and easily. In addition, automatic filter-life notifications are displayed on the LCD or via the Dyson Link app.

Remote Control: Curved and magnetic remote for convenient storage on top of the machine.

Dyson Pure Cool Link™ air purifier tower TP03 (White/silver)

The device removes 99.95% of PM 0.1.1 particles and projects and circulates clean air.

The Dyson Link app is required to use this product.


360 Glass HEPA Filter: Pollen, germs, and pet dander are all captured by the 360° glass HEPA filter, which captures ultrafine particles from all directions.

Purification With Intelligence: It monitors, reacts, and cleanses automatically, then reports to your Dyson Link app.

Night Mode: With the quietest airflow settings and a muted display, monitors and cleanses.

Air Multiplier: The Air Multiplier™ technology amplifies the ambient air, resulting in a continuous stream of pure airflow.

Remote Control: To store neatly on the machine, it’s curved and magnetizable.

Smooth Oscillation: Purified air is projected and circulated in the room.

Dyson TP05 Pure Cool Air Purifying Fan – White/Silver

The Dyson Pure Cool Fan TP05 filters out 99.95% of allergens and pollutants as small as 0.1 microns. It has a 360° vacuum-sealed HEPA filter that collects ultrafine particles like pollen and bacteria from all directions. Air Multiplier technology circulates clean air around the room and generates a forceful yet gentle airflow.

This powerful home fan has sensors that track small particles and gaseous pollutants automatically. A remote control is included.


  • It removes 99.95% of allergens.
  • The purifier has a HEPA (High-Efficiency Particulate Air) filter.
  • Dyson Air Purifier TP05 eliminates toxic fumes and odors.
  • LED Indicator air quality displays are featured in this device.
  • It’s cool in summer.
  • Perfect for nighttime purification because it’s quiet.
  • It has an air-purifying fan that projects powerful airflow.
  • Senses and captures pollutants in real-time with 360° sealed HEPA and activated carbon filters.
  • Oscillates up to 350°.
  • Diffused mode, fan mode, and night mode
  • Low maintenance, easily changeable filters with a built-in notification when they require replacing.
  • Includes remote control.

Dyson Purifier Cool Formaldehyde™ TP09 (Nickel/Gold)

Pollutants are automatically detected, captured, and trapped. Also, formaldehyde is precisely detected and destroyed. A HEPA H13 standard filter is fully sealed in this purifier model.

So whatever is on the inside stays on the inside. Furthermore, the Dyson Air Purifier TP09 cools you and purifies the entire room.


Reasonable Air Flow: The airflow is routed through the machine’s back, ensuring that effective filtration is maintained.

It Cools You When Needed: Around 77 gallons per second of cooling airflow is projected.

20% Less Noise: It’s 20% quieter than the previous model, thanks to acoustic engineering that reduces turbulence.

Filter Maintenance Is Simple: The catalytic filter does not need to be replaced at any time. However, the HEPA+Carbon filter should be replaced when the Dyson Link app alerts you or every 12 months, whichever comes first.

Mode For The Night: It monitors and cleanses for light sleepers utilizing the quietest settings and a muted display.