Introduction
The Blueair Pure 211+ is a high‑performance air purifier built for large living spaces, bedrooms, and offices. It uses a combination of a washable fabric pre‑filter and a true HEPA filter to capture dust, pollen, pet dander, smoke, and other airborne particles. With a simple one‑button control and three fan speeds, it’s easy to operate and maintain. This guide covers setup, filter care, cleaning, and common issues to keep your air purifier running at its best.
Product Overview
The Pure 211+ has a cylindrical design with a fabric exterior that acts as the first layer of filtration. Air is drawn in from the sides and bottom, passes through the HEPA filter, and clean air is expelled from the top. It’s designed for rooms up to 540 square feet (about 50 square metres) and delivers a Clean Air Delivery Rate (CADR) of 350 for smoke, dust, and pollen. The device has no timer or smart features — just a single knob to control power and fan speed. It weighs about 13 kg and measures 51 x 33 x 33 cm. The filter needs replacement every 6 months for optimal performance.
Full Specifications
| Specification | Detail |
|---|---|
| Model | Pure 211+ |
| Room Size | Up to 540 sq. ft. (50 m²) |
| CADR (Smoke/Dust/Pollen) | 350 / 350 / 350 (m³/h) |
| Filter Type | True HEPA with electrostatic charge + washable fabric pre‑filter |
| Filter Replacement | Every 6 months |
| Fan Speeds | 3 (Low, Medium, High) |
| Noise Level | 31 dB (Low) – 56 dB (High) |
| Power Consumption | 30 – 90 W |
| Voltage | 120 V / 60 Hz (North America), 220‑240 V / 50 Hz (Europe/Asia, depending on model) |
| Dimensions | 51 cm (H) x 33 cm (W) x 33 cm (D) |
| Weight | 13 kg (28.7 lbs) |
| Cable Length | 2.5 metres (8.2 ft) |
| Certifications | AHAM Verified, Energy Star |
| Included Accessories | Pure 211+ air purifier, washable pre‑filter (pre‑installed), user manual |
Key Features
- Dual Filtration System: The outer fabric pre‑filter catches large particles like hair and dust, while the inner HEPA filter captures 99.97% of particles down to 0.1 microns (pollen, mould, pet dander, smoke).
- Washable Pre‑Filter: The fabric sleeve can be removed and machine‑washed or hand‑washed, extending the life of the main HEPA filter. Colours can be changed (Blueair sells different colour pre‑filters separately).
- One‑Knob Control: A single rotary knob switches between off, low, medium, and high. No timers, no apps, no display — just clean air.
- Energy Efficient: Uses as little as 30 W on low, which is about as much as a single LED light bulb on high.
- Quiet Operation: On low speed, it’s nearly silent, making it suitable for bedrooms and nurseries.
- 360° Air Intake: Air is pulled from all sides, so the purifier can be placed anywhere in the room without worrying about blocking an intake.
How to Use
What’s in the Box
- Blueair Pure 211+ air purifier (with washable pre‑filter installed)
- User manual and warranty card
No extra filters or remotes are included. The HEPA filter is pre‑installed inside the unit.
Initial Setup
- Remove all packaging. Pull the plastic bag off the unit. The pre‑filter fabric may have a slight factory odour; this will dissipate after the first few hours of operation.
- Place the purifier on a flat, stable surface with at least 30 cm (12 inches) of clearance on all sides for proper airflow. Avoid corners and placing it under furniture.
- Plug the power cable into a grounded outlet. The cable exits from the bottom.
- Turn the knob clockwise from Off to the desired speed (I, II, or III). The purifier starts immediately. The LED indicator near the knob lights up.
Operating the Purifier
- Speed I (Low): For continuous use in bedrooms at night, or when you want minimal noise.
- Speed II (Medium): For daily use in living rooms when you’re present.
- Speed III (High): For maximum cleaning power, such as after cooking, during allergy season, or when you first enter a dusty room. It’s noisier, so use for shorter periods.
- Turn off: Rotate the knob back to Off.
Filter Replacement & Washing
- Pre‑filter washing: The fabric pre‑filter should be washed every 2‑4 weeks. To remove, simply lift it off the unit (it’s a sleeve). Machine wash on gentle cycle with mild detergent, or hand wash. Air dry completely before putting it back on. Do not tumble dry.
- HEPA filter replacement: The main filter should be replaced every 6 months. To replace:
- Turn off and unplug the purifier.
- Remove the pre‑filter.
- The HEPA filter is held inside; it may have a small tab or handle. Pull it straight out.
- Insert a new Blueair Pure 211+ HEPA filter (sold separately). Ensure the arrows on the filter align correctly.
- Replace the pre‑filter.
The purifier does not have a filter change indicator. Mark the date on the filter or set a reminder on your phone.
Placement Tips
- For best results, place the purifier in the room where you spend the most time. Keep doors and windows closed when the purifier is running.
- For allergy relief, place it in the bedroom and run it on low all night.
- The 360° intake means it doesn’t need to be near a wall, but don’t block the bottom or sides with curtains or furniture.
Troubleshooting & Common Problems
| Problem | Likely Cause | What to Try |
|---|---|---|
| Purifier won’t turn on | Not plugged in, or knob not turned far enough | Ensure the power cable is fully inserted at the bottom and the wall outlet is live. Turn the knob past the first click. |
| Airflow seems weak | Pre‑filter dirty, or HEPA filter clogged | Wash the pre‑filter. If the HEPA filter is older than 6 months, replace it. Check for obstructions around the unit. |
| Loud noise on high speed | Normal, or something touching the fan | High speed is louder. Ensure the purifier is not touching walls or furniture. If there’s a rattling sound, turn off and inspect for debris in the fan. |
| Odour coming from the purifier | New filter smell, or pre‑filter needs washing | Run the purifier on high for a few hours in a ventilated room. Wash the pre‑filter. If the odour persists, replace the HEPA filter. |
| Unit shuts off by itself | Overheating protection, or power issue | The motor has thermal protection; let it cool for 30 minutes. Check the outlet. If it still shuts off, contact Blueair. |
| Knob feels loose or doesn’t click | Mechanical wear | The knob is a simple rotary switch. If it doesn’t click into positions, contact Blueair for a replacement. |
Frequently Asked Questions
- How often should I replace the HEPA filter?
Every 6 months under normal use. If you have pets, smoke, or live in a dusty area, you may need to replace it sooner (every 4‑5 months). - Can I wash the HEPA filter?
No, the HEPA filter is not washable. Washing it will destroy the filtration material and reduce efficiency. Only the fabric pre‑filter is washable. - Does the Pure 211+ produce ozone?
No, it uses mechanical filtration only. There is no ionizer or ozone generator, so it’s safe for people with asthma or chemical sensitivities. - What is the difference between the Pure 211+ and the Pure 121?
The Pure 121 is smaller and rated for rooms up to 200 sq. ft. The Pure 211+ is for rooms up to 540 sq. ft. and has a higher CADR. The Pure 211+ also has a 360° intake, while the 121 has a front intake. - Can I use the purifier without the pre‑filter?
It’s not recommended. The pre‑filter catches large particles and extends the life of the HEPA filter. Without it, the HEPA filter will clog faster. You can purchase replacement pre‑filters in different colours. - Is the unit heavy?
It weighs 13 kg (28.7 lbs). It has no casters, so lift carefully. It’s not meant to be moved frequently.
Tips
- Run it continuously: Air purifiers work best when left on all the time. On low speed, energy use is minimal.
- Wash the pre‑filter weekly in dusty environments: If you have pets, wash it every week to maintain airflow.
- Replace the filter before allergy season: Get a fresh HEPA filter at the start of spring to capture pollen effectively.
- Use a timer plug: Since the purifier has no timer, you can pair it with a smart plug to turn it on/off automatically.
- Keep doors closed: The purifier can’t clean the whole house at once; close the door to the room you’re purifying for faster results.
Safety Information
- Power: Use only grounded outlets. Do not use with extension cords that are undersized. Unplug before cleaning or moving.
- Filter: Do not operate the purifier without the HEPA filter installed. It can damage the fan and reduce performance.
- Placement: Keep at least 30 cm clearance on all sides. Do not block the air intake or outlet. Do not place on soft surfaces.
- Children: The purifier is heavy and has no exposed moving parts, but keep out of reach of small children. The pre‑filter could be pulled off.
- Water: The purifier is not waterproof. Do not use in bathrooms or near water. Do not wash the HEPA filter.
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