Introducing Multi V i :
Advancing intelligent VRF technology
The LG Multi V i is the next-generation all-electric Heat Recovery Heat Pump Variable Refrigerant Flow (VRF) solution developed to address today’s demands for energy efficiency, application flexibility, and intelligent climate control. With capacities ranging from 6 to 44 tons in single, dual-, or triple-frame configurations, Multi V i offers high performance features and adaptability for commercial buildings.
Redefining performance and comfort
The advantages of LG's Heat Recovery VRF solution:
Advanced operation with on-device AI support
Powered by LG's Neutral Engine, Multi V i learns usage patterns, adjusting performance in real time to help manage energy use. It even tracks consumption and sends alerts before thresholds are exceeded - helping building owners manage their systems.
Energy efficiency with advanced features
LG Multi V i automatically adapts to conditions, provides heating capability in cold conditions (based on rated operating range), offers higher EER ratings compared to prior LG models, and uses low GWP R-32 refrigerant.
Targeted comfort for diverse spaces
From hospitals and schools to high-rise offices and airports, Multi V i offers targeted zoning, independent temperature controls, and quiet operation features, supporting the demands of commercial spaces.
Multi V i : Built for durability
The Multi V i offers high-capacity options for large projects, operation suited for demanding climates, and service-friendly features to support efficient project performance over time.
Compact footprint
22 RT in a single frame with 4-sided heat exchanger
Wide operating range
Cools to 113 °F, heats to 5 °F; operates -22 °F to 126 °F
Adaptive & quiet
AI-driven load and noise control (50-70 dB(A))
Protective coatings
Coated coils and treated panels for harsh sites
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Multi V™ i Product FAQs
Safety & Compliance
Is the LG Multi V i VRF system compliant with A2L refrigerant safety requirements?
Yes. The Multi V i system is designed with A2L refrigerant compliance in mind. It includes built-in refrigerant leak detection sensors and an alarm system to help maintain a safe indoor environment in the event of a leak.
Which refrigerant does the Multi V i use in the U.S.?
The Multi V i Heat Recovery and Heat Pump models operate on low-GWP R-32 refrigerant, ensuring compliance with the latest environmental and safety regulations.
Where can I access the official warranty for the LG Multi V i system?
You can find the complete warranty details for the Multi V i VRF system on LG's official warranty page: www.lghvac.com/warranty-page.
Product Overview
What applications is the LG Multi V™ i HR/HP system designed for?
The system is engineered for operation in extreme conditions and optimized for ease of setup, maintenance, and day-to-day serviceability.
What features make the Multi V i system service-friendly?
Key features such as Auto Tuning, Compressor Balancing Control, Linear Bypass Defrost, and Noise Adaptive Control simplify commissioning, routine maintenance, and ongoing operation.
Capacities & Configurations
What system capacities and frame configurations are available?
The Multi V i offers single-frame outdoor units from 6 to 22 tons, as well as dual- and triple-frame configurations scalable up to 44 tons.
Extreme Condition Performance
How does the Multi V i perform in high-temperature cooling?
The system delivers 100% cooling capacity up to 113 °F ambient and continues operating in cooling mode up to 126 °F ambient conditions.
How does it perform in cold-climate heating?
The Multi V i maintains 100% heating capacity down to 5 °F ambient, making it well-suited for cold-weather regions.
Advanced Features: Auto Tuning
What is Auto Tuning in the Multi V i system?
Auto Tuning automatically measures compressor and fan motor characteristics and adjusts control settings to optimize system performance.
How does Auto Tuning improve long-term reliability?
By adapting to motor characteristics, Auto Tuning enhances efficiency, supports compatibility with future compressor generations, and reduces the need for stocking outdated units.
Compressor Balancing Control
What is Compressor Balancing Control?
This feature alternates compressor runtime to evenly distribute wear and extend the overall life of the system.
How does it benefit system longevity?
By equalizing usage across compressors, it minimizes early faults and extends equipment durability.
Linear Bypass Defrost
How does the Linear Bypass Defrost cycle work?
Through precise bypass valve control, the system directs warm gas to critical areas, preventing ice buildup and significantly reducing defrost time.
How much faster is Linear Bypass Defrost than traditional methods?
It shortens defrost time by up to two-thirds, ensuring less downtime and consistent comfort.
Where is this feature most beneficial?
Environments requiring uninterrupted heating—such as healthcare facilities, nursing homes, and assisted living centers.
Noise Adaptive Control
What is Noise Adaptive Control (ODU Sound Mode)?
This function allows adjustment of outdoor sound levels to meet site-specific noise requirements, improving flexibility for urban or noise-sensitive applications.
VRF Technology Basics
What is VRF (Variable Refrigerant Flow)?
VRF is a high-efficiency, multi-split HVAC technology that uses refrigerant as the cooling and heating medium. One or more outdoor units connect to multiple indoor units, modulating refrigerant flow to match each zone's demand.
What are the two main types of VRF systems?
- Heat Pump VRF: Provides heating or cooling to all zones at a given time.
- Heat Recovery VRF: Allows simultaneous heating and cooling across different zones.
When should I choose Heat Recovery VRF?
Heat Recovery VRF is ideal for buildings with diverse loads, such as east- and west-facing zones or spaces with varying occupancy schedules.
What efficiency standards apply to VRF systems?
VRF cooling efficiency is measured by Integrated Energy Efficiency Ratio (IEER). LG VRF systems comply with U.S. federal energy conservation standards (10 CFR 431.97).
Can VRF systems perform in cold climates?
Yes. When properly designed and installed, VRF provides reliable heating and cooling in cold-climate applications.
How many indoor units can connect to a VRF system?
Depending on the model, multiple indoor fan coil units can be connected to a shared outdoor unit for flexible design.
What are the main benefits of VRF for building owners?
Energy savings from variable capacity operation, improved comfort with precise zoning, and steady temperature control for occupant satisfaction.
Does VRF require additional ventilation equipment?
Yes. VRF provides heating and cooling, while fresh air ventilation is typically supplied by a dedicated outdoor air system (DOAS) that integrates with the VRF design.
What building controls are available for LG VRF?
LG offers a full suite of controls, including the MultiSITE™ platform, which enables centralized and enterprise-level management of scheduling, setpoints, and building integration.
What building types are best suited for VRF?
Offices, hotels, multifamily housing, schools, and other multi-zone facilities where zoning, part-load efficiency, and quiet operation are priorities.