Three Robots, Three Missions
Gaolijie manufactures three primary duct cleaning robots, each engineered for a specific cleaning environment. Choosing the wrong model means either overspending on capability you don't need or under-buying for the jobs you actually do. This guide matches each robot to its ideal use case with real numbers.
Quick Reference: Who Should Buy Which Robot
| If You Clean... |
Buy This |
Why |
| Restaurant kitchen exhaust ducts (12-47 inch) |
CR360 |
360 degree rotation, stainless steel, built for grease |
| AC/HVAC ducts in commercial buildings |
K7S |
All-in-one system with vacuum, camera, and multiple brushes |
| Industrial pipelines, power plants, mining vents (up to 60 inch) |
E200 |
Heavy-duty, high-torque, large-diameter capability |
| Multiple service types |
K7S + CR360 |
K7S for HVAC jobs, CR360 for kitchen exhaust — the most common combo |
Detailed Specification Comparison
| Specification |
CR360 |
K7S |
E200 |
| Primary Application |
Kitchen exhaust ducts |
HVAC / AC ducts |
Industrial pipelines |
| Duct Diameter Range |
300mm - 1200mm (12-47in) |
150mm - 800mm (6-31in) |
400mm - 1500mm (16-60in) |
| Chassis Material |
304 Stainless Steel |
Aluminum alloy + steel |
Heavy-gauge steel |
| Brush Rotation |
360 degree continuous |
Bidirectional (not full 360) |
360 degree with high-torque motor |
| Camera |
1080P HD with pan-tilt |
1080P fixed forward |
1080P HD with pan-tilt-zoom |
| Weight |
~25 kg (55 lbs) |
~18 kg (40 lbs) |
~45 kg (99 lbs) |
| Power |
110V/220V corded |
110V/220V corded |
220V/380V corded |
| Price Range (FOB) |
$3,000-$3,500 |
$3,500-$4,200 |
$5,500-$7,000 |
| Typical Payback Period |
2-3 months |
3-4 months |
4-6 months |
CR360: The Kitchen Exhaust Specialist
The CR360 is purpose-built for one of the dirtiest jobs in commercial maintenance: restaurant kitchen exhaust ducts. Its 304 stainless steel construction resists the acidic, high-temperature, grease-saturated environment that would corrode standard equipment within months. For contractors whose business is 70%+ kitchen exhaust work, this is the clear choice.
K7S: The Versatile All-in-One
The K7S is the most versatile robot in the lineup. It comes as a complete system: robot with bidirectional brush, HEPA-filtered vacuum unit, 1080P inspection camera, three interchangeable brush heads, and a rugged carry case. For contractors doing a mix of HVAC duct cleaning, light commercial kitchen exhaust, and coil cleaning, the K7S covers the broadest range of jobs from a single equipment investment.
E200: The Heavy Industry Workhorse
The E200 is in a different class entirely. At 45kg with a 60-inch diameter capability, it is built for power plants, steel mills, mining ventilation, and large-diameter industrial pipelines. Its high-torque drive system and industrial-grade motors handle abrasive dust, high-temperature exhaust, and continuous operation cycles that would burn out smaller robots.
The Two-Robot Strategy
Many successful Gaolijie customers operate two robots: a CR360 for kitchen exhaust jobs and a K7S for HVAC work. This combination covers approximately 95% of all commercial duct cleaning jobs. Total equipment investment: $6,500-$7,700. Combined payback: 3-5 months at 3-4 jobs per week.
Compare all Gaolijie duct cleaning robots with current pricing and shipping options.
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