Winner
Updated November 2026
Data from the official Blueair and Dyson sites.
2026 verdict
Blueair Signature SP4i wins the 2026 matchup against Dyson Purifier Hot+Cool HP1, mainly on price, rating, and filtration.
It wins the broader comparison through price, rating, and filtration, while sensors and AHAM verifide help confirm the result. Pick Dyson Purifier Hot+Cool HP1 only when warranty is the deciding factor for your setup. That is why Blueair Signature SP4i wins the verdict here.
Works with
Connectivity
- Wi-Fi 2.4 GHz
vs
32% OFF
$449.95
$659.99
Works with
Connectivity
- Wi-Fi 2.4 GHz
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| Feature | Blueair Signature SP4i | Dyson Purifier Hot+Cool HP1 | Winner |
|---|---|---|---|
| Price | $449.00 | $449.95 | Blueair Signature SP4i |
| Rating | 4.4 | 4.2 | Blueair Signature SP4i |
| Warranty | 1 year | 2 years | Dyson Purifier Hot+Cool HP1 |
| Filtration | HEPA Filter, Activated Carbon Filter, Washable Pre-Filter | HEPA Filter, Activated Carbon Filter | Blueair Signature SP4i |
| Sensors | PM1, PM2.5, PM10, TVOC | PM2.5, TVOC, Temperature | Blueair Signature SP4i |
| AHAM Verifide | YES | NO | Blueair Signature SP4i |
| Connectivity | 2.4 GHz WiFi | 2.4 GHz WiFi | Tie |
| Integrations | Google Home, Alexa | Google Home, Alexa | Tie |
| Auto Mode | YES | YES | Tie |
Winner
$449.00
- + Price: $449.00
- + Rating: 4.4
- + Filtration: HEPA Filter, Activated Carbon Filter, Washable Pre-Filter
- - Warranty: 1 year vs 2 years
32% OFF
$449.95
$659.99
- + Warranty: 2 years
- - Price: $449.95 vs $449.00
- - Rating: 4.2 vs 4.4
Frequently Asked Questions
Which is better overall: Blueair Signature SP4i or Dyson Purifier Hot+Cool HP1?
Blueair Signature SP4i has the stronger overall profile in this comparison, especially for price, rating, and filtration.
What is the biggest difference between Blueair Signature SP4i and Dyson Purifier Hot+Cool HP1?
Price is one of the clearest differences: Blueair Signature SP4i lists $449.00, while Dyson Purifier Hot+Cool HP1 lists $449.95.
Which one looks better on price?
Blueair Signature SP4i is listed at $449.00, while Dyson Purifier Hot+Cool HP1 is listed at $449.95. 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 Dyson Purifier Hot+Cool HP1?
Choose Dyson Purifier Hot+Cool HP1 if your priority is warranty and that matters more than price.
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