The Klimaire KIWQ-KOIQ DIY 5th Gen 12,000 BTU 115V rates 3.8 among 12,000 BTU DIY mini-splits; the Klimaire KIWQ-KOIQ DIY 5th Gen 9,000 BTU 115V rates 3.8 among 9,000 BTU ones. The Klimaire KIWQ-KOIQ DIY 5th Gen 9,000 BTU 115V costs $270 less ($1,099 vs $1,369).
The best-value quick-connect line: the same certified system as Pioneer’s Quantum Ultra, close to Della’s Optima, without the vacuum pump, for the same price or a few hundred dollars more.
Amazon $1,369The best-value quick-connect line: the same certified system as Pioneer’s Quantum Ultra, close to Della’s Optima, without the vacuum pump, for the same price or a few hundred dollars more.
Amazon $1,099Prices 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.
These two sit in different size classes (12,000 BTU and 9,000 BTU), and each is scored against the reference points for its own class, so a rating says how well each does among its own size peers. How we rank explains each factor.
| Factor weight | Klimaire KIWQ-KOIQ DIY 5th Gen 12,000 BTU 115V | Klimaire KIWQ-KOIQ DIY 5th Gen 9,000 BTU 115V |
|---|---|---|
| Overall rating | 3.8/5 | 3.8/5 |
| Value 35% | 78 $154 per 1,000 Btu/h of heat at 5 °F | 81 $147 per 1,000 Btu/h of heat at 5 °F |
| Cold weather 25% | 53 keeps 72% of its heat at 5 °F, heats down to -13 °F | 57 keeps 75% of its heat at 5 °F, heats down to -13 °F |
| Efficiency 20% | 66 10 HSPF2, 23 SEER2, COP 2.10 at 5 °F | 51 9.5 HSPF2, 23 SEER2, COP 1.89 at 5 °F |
| Warranty 15% | 64 7-year compressor, 5-year parts | 64 7-year compressor, 5-year parts |
| Noise 5% | 48 indoor unit from 30 dB(A) | 48 indoor unit from 30 dB(A) |
| Klimaire KIWQ-KOIQ DIY 5th Gen 12,000 BTU 115V | Klimaire KIWQ-KOIQ DIY 5th Gen 9,000 BTU 115V | |
|---|---|---|
| Capacity (certified) | ||
| Size (nominal) | 12,000 BTU | 9,000 BTU |
| Cooling at 95 °F | 12,000 Btu/h | 9,000 Btu/h |
| Heating at 47 °F | 12,400 Btu/h | 10,000 Btu/h |
| Heating at 17 °F (max) | 10,000 Btu/h | 9,100 Btu/h |
| Heating at 5 °F (max) | 8,900 Btu/h | 7,500 Btu/h |
| Heat kept at 5 °F | 72% | 75% |
| Price per 1,000 Btu/h at 5 °F | $154 | $147 |
| Efficiency (certified) | ||
| HSPF2 (Region IV) | 10 | 9.5 |
| SEER2 | 23 | 23 |
| EER2 | 13 | 13 |
| COP at 5 °F | 2.10 | 1.89 |
| ENERGY STAR | ENERGY STAR Cold Climate | ENERGY STAR Cold Climate |
| AHRI certificate | 218067068 | 218067067 |
| Operating range | ||
| Heats down to | -13 °F | -13 °F |
| Cooling range | 5 to 131 °F | 5 to 131 °F |
| Installation | ||
| Line set connection | Quick-connect (no vacuum pump) | Quick-connect (no vacuum pump) |
| Line set | 25 ft included, up to 49 ft | 25 ft included, up to 49 ft |
| Voltage | 115 V | 115 V |
| Refrigerant | R-454B | R-454B |
| Indoor unit | KIWQ12H1-45T | KIWQ09H1-45T |
| Outdoor unit | KOIQ12H1-45T | KOIQ09H1-45T |
| Build | ||
| Indoor noise | 30–46 dB(A) | 30–43 dB(A) |
| Outdoor noise | 52 dB(A) | 50 dB(A) |
| Wi-Fi | Built in | Built in |
| Weight | indoor 23.1 lb / outdoor 58.4 lb | indoor 20.7 lb / outdoor 53.5 lb |
| Warranty | 7 yr compressor, 5 yr parts | 7 yr compressor, 5 yr parts |
| Warranty with DIY install | Yes | Yes |
| Released | 2025-10 | 2025-10 |
