ECOVACS DEEBOT 661 Cordless Robot Vacuum

Battery life runs 90-120 minutes on a single charge, which covers most average-sized homes in one session.

It works well on hard floors like tile, hardwood, and laminate, plus low-pile carpets. High-pile rugs and shag carpeting are more challenging for this model.

The noise level is moderate. Most owners find it acceptable to run while at home.

For pet hair, look for strong suction (roughly 20,000 Pa or more on a robot vacuum, 150 AW or more on a cordless), a tangle-resistant brush roll, a dedicated pet tool, and HEPA filtration, which by definition captures 99.97% of particles at 0.3 microns. Dyson, Shark and Bissell all make well-reviewed pet models. Use the Pet Hair Specialist filter on our comparison table to see which ones are in stock and what they cost right now.

Most manufacturers suggest replacing filters every 3 to 6 months, depending on how often you vacuum and whether you have pets. HEPA filters usually last 12 to 18 months if you clean them regularly. Washable foam filters on bagless models should be rinsed every 1 to 2 weeks and dried fully before going back in. Replacements typically run $15 to $50. A clogged filter chokes airflow, so suction drops noticeably well before the filter looks dirty.