The Perfect Aire 4th Gen Quick Connect 24,000 BTU 230V and the Della Optima CloudAir 23,000 BTU 230V (24k class) are evenly matched, rated 3.8 and 3.8. The Della Optima CloudAir 23,000 BTU 230V (24k class) costs $175.49 less ($1,849.96 vs $2,025.45).
A quick-connect unit with one of the longest warranties for a self-install, priced below MrCool’s DIY 5th Gen. Its −4 °F heating limit rules it out as the only heat in a very cold climate.
Amazon $2,025.45The cheapest way into a certified, cold-capable heat pump, for a self-installer with a vacuum pump. Pioneer’s Quantum Ultra and the quick-connect Klimaire DIY have near-identical certified ratings.
Amazon $1,849.96 Della $1,849.96Prices 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.
Each factor is scored 0-100 against the same fixed reference points for every 24,000 BTU DIY mini-split; a clear win is highlighted. How we rank explains each one.
| Factor weight | Perfect Aire 4th Gen Quick Connect 24,000 BTU 230V | Della Optima CloudAir 23,000 BTU 230V (24k class) |
|---|---|---|
| Overall rating | 3.8/5 | 3.8/5 |
| Value 35% | 82 $102 per 1,000 Btu/h of heat at 5 °F | 84 $99 per 1,000 Btu/h of heat at 5 °F |
| Cold weather 25% | 52 keeps 82% of its heat at 5 °F, heats down to -4 °F | 55 keeps 74% of its heat at 5 °F, heats down to -13 °F |
| Efficiency 20% | 47 9.5 HSPF2, 22.5 SEER2, COP 1.84 at 5 °F | 47 9.5 HSPF2, 23 SEER2, COP 1.80 at 5 °F |
| Warranty 15% | 78 7-year compressor, 7-year parts | 70 lifetime parts once registered, no compressor term stated |
| Noise 5% | 50 indoor noise not published (neutral score used) | 29 indoor unit from 34 dB(A) |
| Perfect Aire 4th Gen Quick Connect 24,000 BTU 230V | Della Optima CloudAir 23,000 BTU 230V (24k class) | |
|---|---|---|
| Capacity (certified) | ||
| Size (nominal) | 24,000 BTU | 23,000 BTU |
| Cooling at 95 °F | 24,000 Btu/h | 23,000 Btu/h |
| Heating at 47 °F | 24,000 Btu/h | 25,000 Btu/h |
| Heating at 17 °F (max) | 24,000 Btu/h | 21,000 Btu/h |
| Heating at 5 °F (max) | 19,800 Btu/h | 18,600 Btu/h |
| Heat kept at 5 °F | 82% | 74% |
| Price per 1,000 Btu/h at 5 °F | $102 | $99 |
| Efficiency (certified) | ||
| HSPF2 (Region IV) | 9.5 | 9.5 |
| SEER2 | 22.5 | 23 |
| EER2 | 12.2 | 11.7 |
| COP at 5 °F | 1.84 | 1.80 |
| ENERGY STAR | ENERGY STAR Cold Climate | ENERGY STAR Cold Climate |
| AHRI certificate | 216498647 | 218471000 |
| Operating range | ||
| Heats down to | -4 °F | -13 °F |
| Cooling range | 5 to 115 °F | 5 to 131 °F |
| Installation | ||
| Line set connection | Quick-connect (no vacuum pump) | Flare fittings (vacuum pump needed) |
| Line set | 25 ft included | 16.4 ft included, up to 65 ft |
| Voltage | 230 V | 230 V |
| Refrigerant | R-454B | R-454B |
| Indoor unit | 4PAMSHQCW24 | 048-TP-23K2V-C-IN |
| Outdoor unit | 4PAMSHQCO24 | 048-TP-23K2V-23S-OUT |
| Build | ||
| Indoor noise | - | 34–50 dB(A) |
| Outdoor noise | - | 54 dB(A) |
| Wi-Fi | Built in | Built in |
| Room size (maker) | up to 1,000 sq ft | up to 1,500 sq ft |
| Weight | indoor 33.2 lb / outdoor 121.2 lb | indoor 30.9 lb / outdoor 112.4 lb |
| Warranty | 7 yr compressor, 7 yr parts | lifetime parts (registered) |
| Warranty with DIY install | Yes | Yes |
| Released | 2025-09 | 2026-06 |
