LG Art Cool Deluxe 9,000 BTU
#3 in 9,000 BTUFull review
Heats down to −31 °F, the lowest limit here, and makes more than its rated heat at 5 °F. A strong pick for a very cold climate.
The LG Art Cool Deluxe 9,000 BTU is the better mini-split overall, rated 4.8 to 3.5. The LG Art Cool Deluxe 9,000 BTU leads on cold weather and efficiency. The Daikin Oterra 9,000 BTU wins on noise.
Daikin Oterra 9,000 BTU
#18 in 9,000 BTUFull review
Daikin’s entry line, for cooling and mild winters: it stops heating below 5 °F, but keeps Daikin’s 12-year registered warranty.
Prices were last checked October 21, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the LG Art Cool Deluxe 9,000 BTU for cold weather (keeps 109% of its heat at 5 °F, heats down to -31 °F vs keeps 71% of its heat at 5 °F, heats down to 5 °F) and efficiency (13.5 HSPF2, 27 SEER2, COP 2.04 at 5 °F vs 10.2 HSPF2, 21 SEER2, COP 2.00 at 5 °F).
- Choose the Daikin Oterra 9,000 BTU for noise (indoor unit from 19 dB(A) vs indoor unit from 21 dB(A)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 9,000 BTU mini-split; a clear win is highlighted. How we rank explains each one.
| Factor weight | LG Art Cool Deluxe 9,000 BTU | Daikin Oterra 9,000 BTU |
|---|---|---|
| Overall rating | 4.8/5 | 3.5/5 |
| Cold weather 40% | 100 keeps 109% of its heat at 5 °F, heats down to -31 °F | 25 keeps 71% of its heat at 5 °F, heats down to 5 °F |
| Efficiency 30% | 87 13.5 HSPF2, 27 SEER2, COP 2.04 at 5 °F | 60 10.2 HSPF2, 21 SEER2, COP 2.00 at 5 °F |
| Warranty 20% | 100 10-year compressor, 10-year parts | 100 12-year compressor, 12-year parts |
| Noise 10% | 90 indoor unit from 21 dB(A) | 100 indoor unit from 19 dB(A) |
Specifications
| LG Art Cool Deluxe 9,000 BTU | Daikin Oterra 9,000 BTU | |
|---|---|---|
| Capacity (certified) | ||
| Size (nominal) | 9,000 BTU | 9,000 BTU |
| Cooling at 95 °F | 9,000 Btu/h | 9,000 Btu/h |
| Heating at 47 °F | 11,000 Btu/h | 10,900 Btu/h |
| Heating at 17 °F (max) | 13,730 Btu/h | 12,200 Btu/h |
| Heating at 5 °F (max) | 12,000 Btu/h | 7,700 Btu/h |
| Heat kept at 5 °F | 109% | 71% |
| Efficiency (certified) | ||
| HSPF2 (Region IV) | 13.5 | 10.2 |
| SEER2 | 27 | 21 |
| EER2 | 15.8 | 12.5 |
| COP at 5 °F | 2.04 | 2.00 |
| ENERGY STAR | ENERGY STAR Cold Climate | ENERGY STAR Cold Climate |
| AHRI certificate | 216368959 | 216620038 |
| Operating range | ||
| Heats down to | -31 °F | 5 °F |
| Cooling range | 14 to 118 °F | 50 to 118 °F |
| Installation | ||
| Installed by | Professional (sold through installers) | Professional (sold through installers) |
| Line set connection | Flare fittings (vacuum pump needed) | Flare fittings (vacuum pump needed) |
| Line set | up to 65.6 ft | up to 66 ft |
| Voltage | 230 V | 230 V |
| Refrigerant | R-32 | R-32 |
| Indoor unit | KNSAL091A | FTXF09BVJU9 |
| Outdoor unit | KUSAL091A | RXF09BVJU9 |
| Build | ||
| Indoor noise | 21–42 dB(A) | 19–44 dB(A) |
| Outdoor noise | 48 dB(A) | 49 dB(A) |
| Wi-Fi | Built in | Built in |
| Weight | indoor 24.3 lb / outdoor 99.2 lb | indoor 19 lb / outdoor 63 lb |
| Warranty | 10 yr compressor, 10 yr parts | 12 yr compressor, 12 yr parts |
| Warranty with DIY install | No, a licensed installer is required | - |