The Gaolijie Duct Cleaning Robot Lineup: One Platform, Three Specializations

The Gaolijie Duct Cleaning Robot Lineup: One Platform, Three Specializations

Gaolijie manufactures three distinct duct cleaning robots, each engineered for a specific application profile. Understanding the differences — and more importantly, understanding which profile matches your business — is the difference between a machine that pays for itself in 6 months and one that sits underutilized.

This comparison is based on actual factory specifications, field feedback from contractors in 50+ countries, and the engineering design intent behind each model. No marketing fluff. Just the data you need to make an informed capital equipment decision.

Quick Reference: Model Overview

Model	Primary Application	Duct Diameter Range	Best For
CR360	Oil fume / kitchen exhaust duct cleaning	6" – 40" (150–1000mm)	Restaurant exhaust, commercial kitchen ductwork, grease-laden systems
K7S	AC / HVAC air duct cleaning	4" – 24" (100–600mm)	Air conditioning ducts, ventilation systems, office and residential HVAC
E200	Heavy-duty industrial duct & pipeline cleaning	8" – 60" (200–1500mm)	Industrial pipelines, manufacturing exhaust, power generation, large-diameter systems

CR360: The Kitchen Exhaust Workhorse

The CR360 is purpose-built for the most demanding application in duct cleaning: commercial kitchen exhaust. Grease-laden ducts present unique challenges — heavy deposits that require high-torque brushing, corrosive chemical exposure during degreasing, and confined access in restaurant environments.

Technical Highlights

• 304 stainless steel chassis: Resists chemical degreasers and acidic grease compounds. Aluminum chassis (common in competing robots) corrode within months of chemical exposure in kitchen exhaust environments.
• High-torque brush drive: Maintains consistent brush pressure against caked-on grease deposits that softer drives slip against. Variable speed 0-120 RPM with adjustable brush direction.
• IP67 waterproof rating: Every CR360 is immersion-tested. Kitchen exhaust cleaning involves chemical spray, steam, and wash-down — water ingress protection is not optional.
• Integrated HD camera: 1080p resolution with LED illumination ring. The CR360 records continuously during operation, providing the before/after documentation required for NFPA 96 compliance.
• Universal controller compatibility: Shares the same control system as the E200 and K7S. Crews trained on one Gaolijie robot can operate all three without retraining.

Who Should Choose the CR360

• Kitchen exhaust cleaning contractors running nightly restaurant routes
• Companies whose client base is 80%+ food service establishments
• Contractors required to provide NFPA 96-compliant documentation
• Operations where the robot will be exposed to water, chemicals, and heavy grease daily

K7S: Precision for AC Duct Systems

The K7S is Gaolijie's lightest and most maneuverable robot, optimized for air conditioning and ventilation duct systems. Unlike kitchen exhaust ducts, AC ductwork typically contains dry particulate — dust, mold spores, fiberglass fibers, and construction debris. The cleaning requirements are different: more emphasis on filtration quality and less on grease-cutting mechanical force.

Technical Highlights

• Compact form factor: Navigates tight duct configurations, including rectangular HVAC ducts as small as 4" × 8". Fits through standard access panels without modification.
• Integrated vacuum coordination: The K7S brush system is designed to work in concert with a separate HEPA vacuum unit, directing dislodged particulate toward the vacuum inlet for capture rather than dispersal.
• Lightweight design: At approximately 35 lbs, a single operator can deploy the K7S from a service van and set up in under 10 minutes. Two-person crews can run two K7S units simultaneously on different duct branches.
• HEPA filtration integration: Ships with H13-certified HEPA filtration on the companion vacuum unit. Post-cleaning air quality testing typically shows particulate counts within acceptable IAQ standards for occupied commercial spaces.
• Camera documentation: Standard HD camera with the same recording capability as the CR360, providing clients with visual proof of cleaning quality for their facility management records.

Who Should Choose the K7S

• HVAC contractors adding duct cleaning as an ancillary service to existing maintenance contracts
• Companies focused on office buildings, healthcare facilities, schools, and residential high-rises
• Operations where client documentation requirements center on IAQ compliance (ASHRAE, LEED) rather than fire code
• Contractors who need to deploy equipment quickly with minimal crew training

E200: Heavy-Duty for Industrial Applications

The E200 is the largest and most powerful robot in the Gaolijie lineup. It is designed for industrial environments where duct and pipeline diameters exceed 24 inches — manufacturing exhaust systems, power plant ductwork, chemical processing pipelines, and municipal infrastructure.

Technical Highlights

• Maximum torque output: The E200's drive system delivers 2.5× the torque of the CR360, enabling it to remove hardened industrial deposits — cement dust, coal ash, chemical residue — that lighter robots cannot budge.
• 60-inch diameter capability: With extended brush arms, the E200 cleans pipes and ducts up to 60 inches (1,500mm) in diameter. No competing robot in this price class matches this range.
• Smart control system: The E200 control box includes real-time torque monitoring, allowing the operator to identify sections with abnormally heavy deposits based on motor load data. This data feeds into maintenance reports for the facility owner.
• Reinforced drive tracks: Industrial environments contain debris that would damage standard rubber tracks. The E200 uses reinforced track materials rated for abrasive surfaces including concrete, steel, and chemical-exposed metal.
• 48-hour factory testing: Every E200 undergoes 48 continuous hours of operation testing at full load before shipment. This is unique in the industry — most manufacturers test for 2-4 hours.

Who Should Choose the E200

• Industrial cleaning contractors serving manufacturing, power generation, chemical processing, and mining operations
• Companies bidding on municipal and infrastructure contracts with large-diameter pipelines
• Operations where equipment downtime is measured in thousands of dollars per hour — the E200's reliability justifies the investment
• Contractors who need to demonstrate capability to industrial procurement departments that require documented equipment specifications

Comparison Table: Technical Specifications

Specification	CR360	K7S	E200
Application	Kitchen exhaust / oil fume	AC / HVAC air ducts	Heavy industrial / pipelines
Duct diameter range	6" – 40" (150–1000mm)	4" – 24" (100–600mm)	8" – 60" (200–1500mm)
Chassis material	304 stainless steel	304 stainless steel	304 stainless steel
Waterproof rating	IP67	IP67	IP67
Camera system	HD 1080p + LED ring	HD 1080p + LED ring	HD 1080p + LED ring
Brush drive	Electric, variable 0-120 RPM	Electric, variable 0-180 RPM	Electric, high-torque, variable
Controller	Universal (cross-model)	Universal (cross-model)	Smart control with torque monitoring
Weight (approx.)	55 lbs (25kg)	35 lbs (16kg)	75 lbs (34kg)
Testing before shipping	48 hours continuous	48 hours continuous	48 hours continuous
Warranty	1 year (extendable to 3)	1 year (extendable to 3)	1 year (extendable to 3)

Controller Compatibility: Why It Matters

All three Gaolijie robots share a common control architecture. The universal controller accepts input from any model, meaning:

• A crew trained on the CR360 can operate the K7S or E200 without additional training
• If one controller fails, any other controller in your fleet serves as a backup
• Firmware updates apply across your entire fleet regardless of model mix
• Spare controller inventory is one SKU for all machines — simpler parts management

For multi-crew contractors running mixed fleets (e.g., CR360 for kitchen work, K7S for HVAC work), this commonality eliminates a significant operational friction point that competing equipment families introduce with model-specific controls.

Pricing Context

Gaolijie sells factory-direct — no distributors, no dealer markup. Pricing varies based on configuration, accessories, and shipping method (air freight vs sea freight). As a reference frame:

• The K7S is the most accessible entry point, suitable for contractors adding AC duct cleaning with a modest initial investment
• The CR360 is the mid-range workhorse, priced for contractors who need a dedicated kitchen exhaust cleaning robot that handles chemicals, water, and heavy grease daily
• The E200 is the premium option, priced for industrial contractors whose job contracts justify specialized heavy-duty equipment

All prices include the robot, controller, standard brush set, HD camera system, and 1-year warranty. Extended warranty (up to 3 years) and spare parts packages are available.

Not sure which model fits your business? Let's talk specifics.

Tell us about the types of jobs you handle — duct sizes, materials being cleaned, chemical exposure, and daily throughput requirements. Our engineering team will recommend the right configuration. We'd rather help you choose correctly than sell you the wrong machine.

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Related Resources

• How Much Does an Industrial Duct Cleaning Robot Cost? Complete B2B Pricing Guide
• Best Duct Cleaning Robot for Commercial Kitchens: Complete Comparison Guide
• View Complete Gaolijie Equipment Catalog →