Updated November 2026
Data from the official Blueair and Dreame sites.
2026 verdict
Dreame AirPursue PM20 has the better all-around case than Blueair Signature SP4i in 2026, starting with warranty and sensors.
It has the clearer edge on warranty and sensors, and it stays ahead on its broader overall balance. Blueair Signature SP4i is the better fit only for buyers who prioritize price and rating above everything else here. For the average buyer, Dreame AirPursue PM20 is the safer choice.
Works with
Connectivity
- Wi-Fi 2.4 GHz
vs
Winner
Works with
Connectivity
- Wi-Fi 2.4 GHz
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| Feature | Blueair Signature SP4i | Dreame AirPursue PM20 | Winner |
|---|---|---|---|
| Price | $449.00 | $669.99 | Blueair Signature SP4i |
| Rating | 4.4 | 3.9 | Blueair Signature SP4i |
| Warranty | 1 year | 2 years | Dreame AirPursue PM20 |
| Sensors | PM1, PM2.5, PM10, TVOC | PM1, PM2.5, PM10, TVOC, Formaldehyde, Temperature, Humidity | Dreame AirPursue PM20 |
| Connectivity | 2.4 GHz WiFi | 2.4 GHz WiFi | Tie |
| Integrations | Google Home, Alexa | Google Home, Alexa | Tie |
| Filtration | HEPA Filter, Activated Carbon Filter, Washable Pre-Filter | HEPA Filter, Activated Carbon Filter | Tie |
| AHAM Verifide | YES | YES | Tie |
| Auto Mode | YES | YES | Tie |
$449.00
- + Price: $449.00
- + Rating: 4.4
- - Warranty: 1 year vs 2 years
- - Sensors: PM1, PM2.5, PM10, TVOC vs PM1, PM2.5, PM10, TVOC, Formaldehyde, Temperature, Humidity
Winner
$669.99
- + Warranty: 2 years
- + Sensors: PM1, PM2.5, PM10, TVOC, Formaldehyde, Temperature, Humidity
- - Price: $669.99 vs $449.00
- - Rating: 3.9 vs 4.4
Frequently Asked Questions
Which is better overall: Blueair Signature SP4i or Dreame AirPursue PM20?
Dreame AirPursue PM20 has the stronger overall profile in this comparison, especially for warranty and sensors.
What is the biggest difference between Blueair Signature SP4i and Dreame AirPursue PM20?
Price is one of the clearest differences: Blueair Signature SP4i lists $449.00, while Dreame AirPursue PM20 lists $669.99.
Which one looks better on price?
Blueair Signature SP4i is listed at $449.00, while Dreame AirPursue PM20 is listed at $669.99. Blueair Signature SP4i (better spec).
Who should buy Blueair Signature SP4i?
Choose Blueair Signature SP4i if your priority is price and rating and that matters more than warranty.
Who should buy Dreame AirPursue PM20?
Choose Dreame AirPursue PM20 if your priority is warranty and sensors and that matters more than price.
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