Bottom Line Up Front
The LG LS120HEV2 Art Cool Premier delivers 27 SEER2 — the highest single-zone mini split efficiency rating available on HVACDirect — in a design-forward panel format that mounts flush with the wall. The R-32 refrigerant reduces GWP by 67% versus R-410A. Dual Inverter compressor, 18 dB indoor operation, and -13°F Hyper Heating make this the specification for premium residential and commercial applications where efficiency, design, and cold-climate performance all matter.
Spec Sheet
| Model | LS120HEV2 |
| BTU | 12,000 BTU cooling & heating |
| SEER2 | 27 SEER2 |
| HSPF2 | 11.0 HSPF2 |
| Compressor | Dual Inverter variable-speed |
| Min Temp | -13°F heating (Hyper Heating) |
| Sound Level | 18 dB indoor |
| Refrigerant | R-32 |
| WiFi | Built-in ThinQ |
| Warranty | 7-year parts, 7-year compressor |
| Price | $1,200–$1,800 |
Extended Analysis
LG's Dual Inverter compressor technology uses two rotors offset by 180 degrees, which reduces vibration and enables a wider modulation range (10-100% capacity) than single-rotor inverter compressors. The practical result is quieter operation at low loads — contributing to the 18 dB indoor rating — and tighter temperature control throughout the operating range.
The R-32 refrigerant is a meaningful environmental differentiator. R-32 has a GWP (Global Warming Potential) of 675 versus 2,088 for R-410A — a 68% reduction. EPA Section 608 regulations are progressively restricting R-410A use; R-32 and R-454B are the transition refrigerants for residential mini splits. Choosing R-32 equipment now reduces the risk of regulatory disruption to the refrigerant supply chain for this equipment over its 15-20 year service life.
At 27 SEER2, the LG LS120HEV2 ranks among the top 3% of all ducted and ductless residential cooling equipment by efficiency. For a 12K BTU unit running 1,500 hours per year at $0.15/kWh, annual electricity cost is approximately $65-$80. At 17 SEER2 (budget tier), the same operating profile costs $100-$120. The difference is modest; the primary value proposition is the design, cold-climate performance, and long-term refrigerant compliance.
How It Compares
| Model | Efficiency | Price | Key Spec | Warranty | Score |
|---|---|---|---|---|---|
| LG LS120HEV2 | 27 SEER2 | $1,200–$1,800 | -13°F, 18dB | 7 years | ★★★★½ 4.6 |
| Mitsubishi MSZ-GL12NA | 22.1 SEER2 | $1,200–$1,900 | -13°F, 19dB | 7 years | ★★★★★ 4.7 |
| Daikin 15 Series 12K | 17 SEER2 | $900–$1,400 | -4°F, 22dB | 5 years | ★★★★☆ 4.2 |
Customer Reviews
I specify the LG Art Cool Premier for high-end residential renovations where the client has strong design preferences. The panel format integrates with modern interiors in a way that no other mini split does — it looks like a framed artwork rather than HVAC equipment. The 27 SEER2 efficiency satisfies even the most energy-conscious clients. LG's ThinQ app is the best-designed HVAC control app I have used.
We installed LG LS120HEV2 units in 40 premium suites during a renovation. Guest response has been overwhelmingly positive — the units are silent (guests actually ask if they are running), the design matches our interior aesthetic, and the cold-climate performance means we have no heating complaints even during cold spells. The -13°F rating gives us confidence for our northern properties as well.
The efficiency and cold-climate performance are exactly as claimed. The 27 SEER2 is noticeably lower electricity use than the 19 SEER unit it replaced. The design is genuinely beautiful for a piece of HVAC equipment. I give 4 stars rather than 5 because the installation was complex — the LG distributor had a 3-week lead time and the installing technician needed LG-specific training. Premium equipment requires premium service.
Frequently Asked Questions
What makes the LG Art Cool Premier different from standard mini splits?
The Art Cool Premier uses a flat panel format that mounts flush with the wall and can optionally display a user-uploaded photo or artwork on the front panel. The design eliminates the traditional bulky wall-mounted cassette look. The flat panel also houses a higher-efficiency coil geometry enabled by the panel form factor.
What is R-32 refrigerant and why does it matter?
R-32 is a refrigerant with a GWP of 675, compared to 2,088 for R-410A currently used in most mini splits. It is also an A2L (mildly flammable) refrigerant, which requires technicians with current EPA 608 certification covering A2L refrigerants. R-32 is the primary transition refrigerant for mini splits globally and is required by EPA regulations for new equipment produced after January 2025.
What is Hyper Heating in LG mini splits?
LG Hyper Heating (H-EATCORE) maintains rated heating capacity at temperatures as low as -13°F, comparable to Mitsubishi's Hyper-Heat technology. Standard mini splits lose 30-50% of heating capacity at 17°F. Hyper Heating uses an enhanced compressor design and flash injection circuit to maintain compression efficiency at low ambient temperatures.
Does the LG LS120HEV2 work with smart home systems?
Yes. The ThinQ app integrates with Amazon Alexa, Google Home, and SmartThings. Voice control, scheduling, energy monitoring, and remote diagnostics are all available. LG's ThinQ AI learning feature optimizes scheduling based on usage patterns over time.
What is the installation requirement for the LG LS120HEV2?
Professional installation by an LG-certified technician is required and recommended. LG's warranty compliance requires LG-certified installation for the extended warranty terms. The R-32 refrigerant requires a technician with current A2L handling certification. Installation typically takes 4-6 hours and costs $400-$700 depending on market.