Clean Air Optima air purifiers in Germany

• Does not matter1, 1 model
• Hay fever or pollen1, 1 model
• Asthma or dust mite1, 1 model

A finer filter catches more pollen and dust mite. For asthma we also leave out ionisers that cannot be switched off.

• Does not matter1, 1 model
• Pets at home1, 1 model

Pet smell is a gas, not a particle, and only an activated carbon filter takes it out.

• all1, 1 model
• ★★★★★ 5 stars0, 0 models
• ★★★★☆ 4 stars or higher0, 0 models
• ★★★☆☆ 3 stars or higher0, 0 models
• ★★☆☆☆ 2 stars or higher0, 0 models
• ★☆☆☆☆ 1 star or higher0, 0 models

Counts only models with at least 20 reviews: with fewer, the average says little.

• Does not matter1, 1 model
• 5% & up0, 0 models
• 20% & up0, 0 models
• 30% & up0, 0 models
• 50% & up0, 0 models

Below what the same shop usually asked in the 30 days before, at a shop we followed on all those days.

• Does not matter1, 1 model
• Alexa0, 0 models
• Google Home0, 0 models
• Apple HomeKit0, 0 models
• SmartThings0, 0 models
• Home Assistant0, 0 models
• Matter0, 0 models

Based on the voice assistants and Matter support the maker lists. A model that lists none of them is left out.