Our take
BWT ES Nano
A compact entry-level cordless cleaner that looks best suited to small, straightforward pools. Early specialist testing is positive on value, but there is not yet enough long-term owner evidence to judge battery life or durability.
Early testing highlights the low price, compact size and simple cordless operation.
Long-term battery and service history is still thin, so we would treat it as a newer value option rather than a proven workhorse.
Pools that need battery-powered compact cleaner.
Pools outside its stated size, surface or cleaning-coverage limits.
- Battery-powered compact cleaner
- Floor and waterline cleaning up to 10 m
What the evidence shows
The ES Nano’s main documented appeal is compact cordless operation with a replaceable battery. Whether its navigation and fine-debris cleaning live up to that promise remains less well evidenced.
A compact daily routine
BWT describes the ES Nano as a lightweight cleaner for smaller pools, with floor and waterline cleaning and sensor-guided movement. The battery is described as readily replaceable, which distinguishes the intended maintenance approach from a sealed disposable assembly. The checked page does not establish replacement cost or a measured battery lifespan.
[1]Claims still awaiting practical confirmation
The manufacturer’s descriptions of easy lifting and efficient coverage are not an owner test. The sources checked do not settle how it handles heavy leaf loads, benches or repeated wall transitions. A cleaning result from an ES Echo or another BWT robot would not demonstrate Nano performance.
[1]Sources (1)
- BWT — ES Nano manufacturer product page ↗Manufacturer information
Full specifications
- Battery
- 4500 mAh
- Charge time
- 5-6 hours
- Runtime
- 2.5 hours
- Cleaning duration
- 2.5 h
- Filter
- 180 µm
- Weight
- 7.5 kg
- Dimensions
- 400 × 370 × 220 mm
- Pool size
- 50 m² (~10 m length)
- Cleaning type
- Floor, walls, waterline
- Brush type
- PVC brushes
- Water flow
- 13.2 m³/h (3500 GPH)
- Removable battery
- Yes
- Wi-Fi
- Yes
- Series
- Essential
Sources
Videos
- Robotpool: test robotického vysacače BWT ES Nano ↗
- Search YouTube for BWT ES Nano ↗Search results may include similar models; check the model name.
