LG continues to demonstrate global leadership in innovation and technology with their advancements in home comfort solutions. The LGRED° Heat ductless heat pump system boasts superior heating performance in extreme cold weather climates. The powerful KUMXA481A outdoor condenser works with LG indoor units to provide the maximum amount of comfort control for your home. With several air flow options, quiet operation, and weather protection technology, the LGRED° Heat system is accommodating to nearly every home.
- AHRI Certified
- Energy Star Certified
- LGRED
- Inverter Technology
- Gold Fin Protection
Enhanced Connectivity
LG's new R-32 mini split units require a 5-conductor cable (Not Included) instead of the standard 4-conductor, improving communication reliability and enabling a new leak detection feature.
Low Ambient Operations
This outdoor unit supports cooling operations down to 14 degrees Fahrenheit and heating operations down to -13 degrees Fahrenheit. There is also a defrost feature, which removes frost from the condenser coil in frigid conditions.
Integrated Base Pan Heater
Base pan heaters come factory installed on all LGRED° outdoor condensers in order to mitigate the risk of damage caused by freezing condensate.
Quiet Design
Thanks to a brushless direct current motor and a twin rotary compressor, the unit is significantly quieter than traditional air conditioning systems. These components reduce mechanical sound, electrical sound, and vibrations within the unit.
*Note Indoor Units and Branch Box Required to Operate
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Why Buy LG KUMXA481A Multi F LGRED Outdoor Condenser Unit
- Zoned Comfort: The unit pairs with LG indoor units to provide flexible and precise temperature control for multiple areas in your home.
- High Efficiency: Equipped with inverter technology, a variable speed compressor, and electronic expansion valve, the system ensures energy-efficient operation and accurate temperature regulation.
- Enhanced Connectivity: A 5-conductor cable (required) enhances communication reliability and supports a built-in leak detection feature for added peace of mind.
- Durability: Gold Fin coating on the heat exchanger protects against corrosion, increasing longevity and reducing maintenance needs.
- Quiet Operation: Thanks to a brushless DC motor and twin rotary compressor, the unit operates with significantly reduced noise and vibration, creating a quieter indoor and outdoor environment.
- Automated Operations: Features like defrost mode and integrated base pan heater support consistent operation in freezing conditions, while low ambient performance (down to -13°F for heating) ensures reliable comfort year-round.
Frequently Asked Questions
Q: What is the KUMXA481A?
A: The KUMXA481A is an LG outdoor condenser unit, part of the Multi F series of multi-zone mini-split heat pump systems. It features inverter technology for enhanced energy efficiency.
Q: What is LGRED° heat technology?
A: LGRED° (Reliable to Extreme Degrees) heat technology enables the system to deliver 100% of its rated heating capacity at temperatures as low as 5°F, and continue operating in heating mode down to -13°F. It also includes a factory-installed base pan heater to help prevent ice buildup.
Q: What type of refrigerant does the KUMXA481A use?
A: This unit uses R-32 refrigerant, which has a lower Global Warming Potential (GWP) than R-410A, making it a more eco-friendly option.
Q: Which indoor units are compatible with the KUMXA481A?
A: The KUMXA481A is compatible with a variety of LG indoor unit types, including:
- Wall-mounted units: KNMAB, KNUAB, KNUAK
- Concealed duct units: KNMKB, KNUJB
- Ceiling cassette units: KNUDB
- Low-wall console units: KNUQ
- Air handler units: KNMLB
Q: Why might my system not be cooling or heating properly?
A: Common causes for poor performance include:
- Airflow issues: Make sure nothing is obstructing airflow around the outdoor unit and that indoor unit filters are clean.
- Refrigerant problems: Low refrigerant levels or leaks can affect performance; a certified technician should inspect the system.
- Compressor failure: If the compressor isn’t operating, professional repair may be required.
Q: What kind of warranty comes with the KUMXA481A?
A: Warranty terms can vary by retailer, but typically the unit includes a 5-year parts warranty and a 7-year compressor warranty.
Pros and Cons of LG KUMXA481A Multi F LGRED Outdoor Condenser Unit
Pros
- High Efficiency: With a SEER2 rating of 21.5 and HSPF2 of 11, the unit offers excellent energy performance, helping reduce long-term utility costs.
- Quiet Operation: The brushless DC fan motor and inverter-driven twin rotary compressor deliver whisper-quiet performance with a sound level of just 54 dBA in cooling mode.
- Multi-Zone Flexibility: Supports up to eight zones and is compatible with a variety of indoor unit types including wall-mounted, cassette, and ducted models
- All-Weather Performance: Capable of operating in temperatures as low as 14°F for cooling and -4°F for heating, and includes defrosting and de-icing functions for winter reliability.
- Durability: Gold Fin™ corrosion-resistant coating protects the heat exchanger, extending system life and reliability.
- Smart Connectivity: Uses a 5-conductor communication cable for more reliable control and includes built-in Wi-Fi for remote access via the LG ThinQ app.
Cons
- Complicated Installation: Multi-zone systems like this require professional installation. Some users report that the pipe detection and setup process can be confusing, increasing the risk of installation errors such as CH95 communication faults.
- Essential Accessories Sold Separately: Critical items like line sets and electrical wiring are not included with the unit and must be purchased separately to complete the system.
- Professional Installation Required: Due to refrigerant handling and specialized wiring requirements, this system must be installed by a licensed technician, adding to the upfront cost.
- Dependent on Installer Quality: Proper system function depends heavily on correct installation and configuration. Poor wiring or addressing can lead to performance issues or error codes.
- Potential Warranty Limitations: The standard factory warranty is limited. A 5-year parts and 7-year compressor warranty is available only if installed and commissioned correctly by a certified professional. Labor is often not included.
Conclusion
The LG KUMXA481A is a powerful and efficient outdoor unit for multi-zone heating and cooling applications. It offers quiet operation, versatile indoor unit compatibility, and advanced features like smart control and all-weather reliability. While the unit delivers excellent comfort and performance, it requires expert installation and additional accessories, which should be factored into your total investment.
