Roborock Saros Z70 vs Shark PowerDetect ThermaCharged

The Shark PowerDetect ThermaCharged is the better robot vacuum overall, rated 4.2 to 3.5. The Shark PowerDetect ThermaCharged leads on cleaning and value. The Roborock Saros Z70 wins on mopping and navigation. The Shark PowerDetect ThermaCharged costs $349.99 less ($649.99 vs $999.98).

Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.

Higher rated

Shark PowerDetect ThermaCharged

#53 in Self-cleaning dock4.2Full review

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 $649.99

$649.99

Roborock Saros Z70

#100 in Self-cleaning dock3.5Full review

For early adopters who want a robot that tidies small clutter; buyers who just want clean floors get more for less elsewhere.

Amazon $999.98

$999.98

Which should you buy?

Choose the Shark PowerDetect ThermaCharged for cleaning (measured 89% of sand from carpet, 95% of pet hair, some hair tangled (0.4) vs measured 67% of sand from carpet, 83% of pet hair, some hair tangled (0.5)) and value ($650 vs $1,000).
Choose the Roborock Saros Z70 for mopping (Dual spinning pads, leaves its mop at the dock for carpet, extends to edges vs Vibrating pad, leaves its mop at the dock for carpet, extends to edges) and navigation (LiDAR + camera vs LiDAR + 3D light).

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 Saros Z70
Overall rating	4.2/5	3.5/5
Cleaning 30%	73 measured 89% of sand from carpet, 95% of pet hair, some hair tangled (0.4)	20 measured 67% of sand from carpet, 83% of pet hair, some hair tangled (0.5)
Value 25%	62 $650	36 $1,000
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	100 LiDAR + camera
Mopping 10%	62 Vibrating pad, leaves its mop at the dock for carpet, extends to edges	86 Dual spinning pads, leaves its mop at the dock for carpet, 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).