The Mark 3 is the second-generation ZERO BREEZE portable AC, rated at 5200 BTU and adding heating mode. Three-in-one cooling, heating, and dehumidifying. Runs on AC mains or a dedicated 24V battery pack. Wi-Fi connected for app control. Aimed at larger spaces than the Mark 2 (vans, mid-sized rooftop tents).
$1399
1 retailer
At a glance5 specs
modes
Cool, Heat, Dehumidify
control
Wi-Fi via mobile app
voltage
24V DC, 110V AC
use case
Vans, mid-sized RTTs, small camper builds
btu cooling
5200
Where to buy
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Description
Last reviewed May 03, 2026
Full specifications
5 fields
| modes | Cool, Heat, Dehumidify |
|---|---|
| control | Wi-Fi via mobile app |
| voltage | 24V DC, 110V AC |
| use case | Vans, mid-sized RTTs, small camper builds |
| btu cooling | 5200 |
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