| Compact walk-behind combination unit | 20–26 in (51–66 cm) | Approximately 20,000–35,000 sq ft/h (1,860–3,250 m²/h) | 10–20 gal (38–76 L) | 1–2 cu ft (28–57 L) | Battery-powered; commonly about 2–4 hours per charge, depending on battery and workload | Small retail areas, clinics, workshops, and crowded spaces | Check overall machine width, turning radius, and access to the debris hopper for emptying. |
| Mid-size walk-behind combination unit | 26–32 in (66–81 cm) | Approximately 30,000–50,000 sq ft/h (2,790–4,645 m²/h) | 15–30 gal (57–114 L) | 2–4 cu ft (57–113 L) | Battery-powered; commonly about 2–5 hours per charge | Schools, supermarkets, and medium-sized production areas | Balance tank capacity and machine size against doorways, ramps, and storage space. |
| Large walk-behind combination unit | 30–36 in (76–91 cm) | Approximately 40,000–60,000 sq ft/h (3,715–5,575 m²/h) | 25–40 gal (95–151 L) | 3–6 cu ft (85–170 L) | Battery-powered; commonly about 3–5 hours per charge | Large indoor facilities where a ride-on machine cannot fit | Review operator effort, brush access, and whether the unit can handle the site's debris load. |
| Compact ride-on combination unit | 28–36 in (71–91 cm) | Approximately 45,000–75,000 sq ft/h (4,180–6,970 m²/h) | 25–45 gal (95–170 L) | 3–7 cu ft (85–198 L) | Typically battery-powered; commonly about 3–5 hours per charge | Medium-sized warehouses, distribution areas, and large stores | Confirm turning clearance, seat comfort, and visibility around shelving and pedestrian routes. |
| Standard ride-on combination unit | 34–44 in (86–112 cm) | Approximately 60,000–100,000 sq ft/h (5,575–9,290 m²/h) | 35–65 gal (132–246 L) | 5–10 cu ft (142–283 L) | Typically battery-powered; commonly about 3–6 hours per charge | Large warehouses, manufacturing floors, and logistics facilities | Compare usable runtime, charging time, tank-emptying arrangements, and service access. |
| High-capacity ride-on combination unit | 40–50 in (102–127 cm) | Approximately 80,000–125,000 sq ft/h (7,430–11,610 m²/h) | 50–85 gal (189–322 L) | 8–15 cu ft (227–425 L) | Typically battery-powered; commonly about 4–6 hours per charge | Very large distribution centers and expansive industrial floors | Check aisle width, turning space, floor loading limits, and the time needed to empty and refill tanks. |
| Heavy-duty industrial combination unit | 45–60 in (114–152 cm) | Approximately 100,000–150,000 sq ft/h (9,290–13,935 m²/h) | 60–100 gal (227–379 L) | 10–20 cu ft (283–566 L) | Battery or other power configurations may be available; runtime depends on the specific system and duty cycle | Large industrial sites with broad lanes and substantial loose debris | Assess total machine dimensions, debris handling, ventilation requirements where relevant, and local service support. |