Karhdir C5 18 in vs Sunmax RT35

Last updated: November 9, 2026

The Sunmax RT35 is the better floor scrubber overall, rated 3.4 to 3.1. The Sunmax RT35 leads on warranty.

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.

Karhdir C5 18 in vs Sunmax RT35

Which should you buy?

Scores side by side

Each factor is scored 0-100 against the same fixed reference points for every 17 in and up floor scrubber; a clear win is highlighted. How we rank explains each one.

Factor weightSunmax RT35Karhdir C5 18 in
Overall rating3.4/53.1/5
Value 30%65 $117.59 per inch of path ($1,999, 17 in)68 $111.06 per inch of path ($1,999, 18 in)
Cleaning path 20%46 17 in cleaning path54 18 in cleaning path
Recovery tank 15%82 9.2 gal recovery tank89 11 gal recovery tank
Runtime 15%57 2.5 h per charge0 battery runtime not published, scored as zero
Noise 5%50 sound level not published (neutral score used)50 sound level not published (neutral score used)
Warranty 15%25 2-year parts warranty0 1-year parts warranty

Specifications

Sunmax RT35Karhdir C5 18 in
Cleaning
Cleaning path17 in18 in
Squeegee width22 in24 in
Brush speed-200 rpm
Maker productivity claim (not scored)19,000 sq ft/h24,000 sq ft/h
Tanks
Solution tank7.9 gal10 gal
Recovery tank9.2 gal11 gal
Power
PowerBatteryBattery
Voltage24 V-
Runtime per charge2.5 h-
Build
Weight132 lb166 lb
Parts warranty2 years1 year

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