Air purifier for offices and larges rooms.
Wood's Gran 900
Dust, pollen and other harmful particles accumulate indoors, and poor indoor air quality can lead to health problems such as allergies, fatigue and reduced concentration. Wood's GRAN 900 is one of the most powerful air purifiers on the market and is designed to create a healthy indoor climate in large spaces. With an airflow of 900 m³/h and dual Active ION HEPA filters, it has a purification efficiency of 99.98%. It has low energy consumption, quiet operation and is manufactured in Sweden with up to a 10-year warranty. Full product description
Wood’s Gran 900
Powerful air purifier for offices and larger spaces
In large spaces such as offices and open-plan offices, poor air quality can lead to fatigue, headaches and reduced concentration. Dust, pollen and other air pollutants circulate and have a negative impact on both well-being and the working environment.
Wood’s GRAN 900 is one of the most powerful air purifiers on the market, designed to effectively purify the air in larger rooms. With an impressive airflow of 900 m³/h and dual Active ION HEPA filters, it captures 99.98% of all harmful particles, creating a cleaner and healthier working environment. Despite its powerful performance, it operates quietly, with a noise level of only 35 dB, perfect for offices where both focus and well-being are important.
Why do you need an air purifier?
The air we breathe indoors, both at home and in the office, is often significantly more polluted than the air outside. Particles such as pollen, exhaust fumes and dust follow us indoors and continue to circulate in the air we breathe. Since we spend around 90% of our time indoors, our health and well-being are directly affected by air quality. Whether in the workplace or at home, an air purifier can make a big difference by creating cleaner and healthier indoor air for everyone.
Recommended areas of use:
The perfect air purifier for offices and workplaces: Poor air quality in the workplace can reduce productivity by up to 15% and increase sick leave. GRAN 900 helps purify the air of viruses, dust and pollutants so that you and your employees can work in a fresher and healthier environment.
Air purifiers relieve allergies and asthma: Wood’s GRAN 900 is the most powerful air purifier on the market, perfect for purifying the air in larger rooms. Indoor air is often worse than outdoor air, which can aggravate allergies and asthma. The GRAN 900 effectively purifies the air by capturing allergens such as pollen, dust and other particles, creating a fresher and healthier environment. By placing an air purifier in places where we spend a lot of time, the body is given the opportunity to recover. This can reduce allergic symptoms both immediately and in the long term, contributing to increased well-being.
How does a Wood’s air purifier work?
Wood’s Gran 900 is equipped with dual Active ION HEPA filters and has a purification rate of 99.98%. Wood’s patented and Swedish-made Active ION HEPA filters are designed to effectively capture microscopic particles such as dust, pollen and allergens. The filter is less dense than traditional HEPA filters, enabling quieter operation and more efficient purification without compromising on purification efficiency.
Ionisation makes particles easier to capture
– Air is sucked in through a quiet and energy-efficient fan.
– The air particles receive a weak positive charge, which causes them to clump together and be drawn to the filter like a magnet, as it is negatively charged.

Patented and Swedish-made Active ION HEPA filter
– Thanks to the patented technology, Active ION HEPA filters can be less dense than traditional HEPA filters and still achieve the same high level of purification.
– The filter is constructed from many layers of pleated filter media. This provides a very large total filter area and exceptional filtration capacity.
This technology ensures that all air is purified, with no risk of unfiltered air passing through.
Wood’s Gran 900 has extremely energy-efficient purification
Wood’s GRAN 900 has an impressive CADR of 588 m³/h, making it one of the most powerful air purifiers on the market. With this capacity, it quickly and efficiently purifies the air in large spaces, making it ideal for offices and open-plan environments. Despite its high performance, it is energy efficient with a CADR/Watt of 7.9, which means you get maximum purification without unnecessary power consumption.

Poor air quality in offices and large spaces – gases and odours affect health
In offices and large spaces, air quality can be impaired by exhaust fumes, chemicals and unpleasant odours from, for example, cooking, cleaning products and electronics. These particles can cause irritation of the airways, headaches and reduced concentration.
To effectively remove harmful gases and unwanted odours, Wood’s GRAN 900 can be equipped with a Wood’s Chem Control Carbon filter. This high-quality carbon filter neutralises smoke, chemical vapours and other airborne pollutants, making the working environment healthier and more pleasant. The filter is an add-on product and is purchased separately to customise the air purifier to your specific needs.
Energy efficient and quiet – uses less power than a light bulb
Despite its extreme capacity, the Wood’s GRAN 900 is an energy-efficient air purifier. It can run around the clock without significantly affecting your electricity bill. In a whole year, it consumes between 24 and 80 W, which is comparable to an LED lamp. In addition, the noise level is only 35 dB, making it discreet and pleasant to have in the room.
An investment in health and the environment
Wood’s GRAN 900 is developed and manufactured in Sweden with a focus on the highest quality and long service life. By registering your product at warranty-woods.com and replacing the filter regularly, you get the market’s longest warranty of 10 years.
Invest in clean air today!
With Wood’s GRAN 900, you get one of the most powerful and energy-efficient air purifiers on the market. Perfect for offices, workplaces and larger rooms where you want cleaner air and a healthier environment.
Quick facts
- The most powerful air purifier on the market.
- Purification rate: 99,98%.
- Air flow of 900m³ per hour.
- Purifies 588 m³ of air from pollen particles per hour.
- Made in Sweden.
- Up to 10 years warranty.
Instructions
Specifications
- Maximum work area80 m²
- Sound level30-60 dB (lowest to highest)
- FilterActice ION HEPA
- Carbon filterYes (not included)
- Degree of purification99,98%
- CADR Pollen588 m³/h
- CADR Dust555 m³/h
- CADR Smoke552 m³/h
- CADR/Watt7,9
- Net Weight15,4 kg
- Dimensions mm (H x W x D)220x565x615
- Main materialSteel
- Power consumption24-80 watts
- WarrantyUp to 10 years
- EANWAP901-EU
- Article number7332857000586
Accessories
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Wood’s Active ION HEPA filter 900-serie
Filter for Wood’s air purifiers in the 900 series
- Dual filters – developed for Wood’s 900 series (e.g. GRAN 900).
- Removes 99.98% of harmful particles in the air.
- Captures pollen, dust, mould spores, bacteria and radon daughters.
- Filters down to 0.0003 mm – 50 times smaller than a bacterium.
- Swedish-made premium filters for long life.
- Provides cleaner and healthier air for large spaces.
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Wood’s Pleated Carbon Filter 900-serie
Carbon filter for Wood's 900 series air purifiers
- Two filters – fits Wood's 900 series air purifiers (GRAN 900).
- 100 g of activated carbon per filter (200 g total).
- Pleated design – minimal pressure drop and effective air purification.
- Removes gases, chemical pollutants and unpleasant odours.
- Placed in front of the Active ION HEPA filter.
- Should be replaced approximately every 3 months or more often if capacity is lost.
Related products
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Wood’s AL310
Air purifier for offices, bedrooms and living rooms
- Best in test 2025.
- Purification rate: 99,97%.
- Energy-efficient and quiet operation.
- Purifies 274 m³ of air from pollen particles per hour.
- Made in Sweden.
- Up to 10 years warranty.
-

Wood’s AL 310FC
Air purifier for offices, bedrooms and living rooms
- Best in test 2025.
- Purification rate: 99,97%.
- Has automatic filter check, tells you when filter replacement is needed.
- Purifies 274 m³ of air from pollen particles per hour.
- Made in Sweden.
- Up to 10 years warranty.
-

Wood’s TALL 155
Air purifier for bedrooms and smaller rooms
- Perfect for individuals with pollen allergies and families with children.
- Purification rate: 99,98%.
- Purifies 192 m³ of air from pollen particles per hour.
- Energy efficient and quiet operation
- Made in Sweden.
- Up to 10 years warranty.


















