Roborock S8 Max Ultra vs Shark PowerDetect ThermaCharged

The Shark PowerDetect ThermaCharged is the better robot vacuum overall, rated 4.2 to 4.1.

Higher rated

A good fit for pet owners in smaller homes who want a heated mop wash and dry; its short measured range makes it a poor choice for big floor plans.

Amazon $599.99

$599.99

Roborock S8 Max Ultra

#61 in Self-cleaning dock4.1Full review

For buyers who can plumb in the dock and want a hands-off mopping robot that never needs its water tanks touched.

Amazon $599.99

$599.99

Prices were last checked October 26, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.

Scores side by side

Each factor is scored 0-100 against the same fixed reference points for every self-cleaning dock robot vacuum; a clear win is highlighted. How we rank explains each one.

Factor weight	Shark PowerDetect ThermaCharged	Roborock S8 Max Ultra
Overall rating	4.2/5	4.1/5
Cleaning 30%	73 measured 89% of sand from carpet, 95% of pet hair, some hair tangled (0.4)	63 not yet tested; estimated from 19 tested Roborock robots and the median of the 70 tested robots
Value 25%	67 $600	67 $600
Dock 20%	100 Self-empties the bin, washes the mop, hot-water mop wash, hot-air mop drying	100 Self-empties the bin, washes the mop, hot-water mop wash, hot-air mop drying, doses detergent, optional water hookup
Navigation 15%	85 LiDAR + 3D light	85 LiDAR + 3D light
Mopping 10%	62 Vibrating pad, leaves its mop at the dock for carpet, extends to edges	62 Vibrating pad, lifts 20 mm, extends to edges

Independent tests

Shark PowerDetect ThermaCharged

Tested by	Carpet deep clean	Pet hair	Hair tangle (0 = none)	Area per charge	Conditions
Vacuum Wars	89%	95%	0.4	649 sq ft	Embedded sand in medium-pile carpet; flattened 2.5 in pet hair on carpet, two runs; 7 in hair tangle on hard floor (0 = none wrapped).