Fujitsu Orion XLTH 24,000 BTU
#3 in 24,000 BTUFull review
Fujitsu’s cold-climate line, with more than its rated heat at 5 °F and very high certified efficiency, for homes heating through a cold winter.
The Fujitsu Orion XLTH 24,000 BTU is the better mini-split overall, rated 4.5 to 3.5. The Fujitsu Orion XLTH 24,000 BTU leads on cold weather, efficiency and warranty. The MrCool DIY 5th Gen 24,000 BTU 230V wins on noise.
MrCool DIY 5th Gen 24,000 BTU 230V
#10 in 24,000 BTUFull review
For someone who wants a true plug-together install with no tools beyond a drill, and a warranty that survives it. Expect to pay well over the price of a flare unit with the same cold-weather output.
Amazon MRCOOL DIY Direct $3,335$3,335
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 Fujitsu Orion XLTH 24,000 BTU for cold weather (keeps 102% of its heat at 5 °F, heats down to -15 °F vs keeps 67% of its heat at 5 °F, heats down to -13 °F), efficiency (11.9 HSPF2, 24 SEER2, COP 2.06 at 5 °F vs 9.5 HSPF2, 22.7 SEER2, COP 2.00 at 5 °F) and warranty (10-year compressor, 10-year parts vs 7-year compressor, 5-year parts).
- Choose the MrCool DIY 5th Gen 24,000 BTU 230V for noise (indoor unit from 20 dB(A) vs indoor unit from 30 dB(A)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 24,000 BTU mini-split; a clear win is highlighted. How we rank explains each one.
| Factor weight | Fujitsu Orion XLTH 24,000 BTU | MrCool DIY 5th Gen 24,000 BTU 230V |
|---|---|---|
| Overall rating | 4.5/5 | 3.5/5 |
| Cold weather 40% | 90 keeps 102% of its heat at 5 °F, heats down to -15 °F | 47 keeps 67% of its heat at 5 °F, heats down to -13 °F |
| Efficiency 30% | 85 11.9 HSPF2, 24 SEER2, COP 2.06 at 5 °F | 54 9.5 HSPF2, 22.7 SEER2, COP 2.00 at 5 °F |
| Warranty 20% | 100 10-year compressor, 10-year parts | 64 7-year compressor, 5-year parts |
| Noise 10% | 48 indoor unit from 30 dB(A) | 95 indoor unit from 20 dB(A) |
Specifications
| Fujitsu Orion XLTH 24,000 BTU | MrCool DIY 5th Gen 24,000 BTU 230V | |
|---|---|---|
| Capacity (certified) | ||
| Size (nominal) | 24,000 BTU | 24,000 BTU |
| Cooling at 95 °F | 22,000 Btu/h | 24,000 Btu/h |
| Heating at 47 °F | 25,200 Btu/h | 24,000 Btu/h |
| Heating at 17 °F (max) | 28,900 Btu/h | 17,900 Btu/h |
| Heating at 5 °F (max) | 25,800 Btu/h | 16,100 Btu/h |
| Heat kept at 5 °F | 102% | 67% |
| Price per 1,000 Btu/h at 5 °F | - | $207 |
| Efficiency (certified) | ||
| HSPF2 (Region IV) | 11.9 | 9.5 |
| SEER2 | 24 | 22.7 |
| EER2 | 12.5 | 12.7 |
| COP at 5 °F | 2.06 | 2.00 |
| ENERGY STAR | ENERGY STAR Cold Climate | ENERGY STAR |
| AHRI certificate | 215647924 | 216032547 |
| Operating range | ||
| Heats down to | -15 °F | -13 °F |
| Cooling range | 14 to 122 °F | -13 to 122 °F |
| Installation | ||
| Installed by | Professional (sold through installers) | Sold for self-install (DIY) |
| Line set connection | Flare fittings (vacuum pump needed) | Quick-connect (no vacuum pump) |
| Line set | up to 164 ft | 25 ft included, up to 75 ft |
| Voltage | 230 V | 230 V |
| Refrigerant | R-32 | R-454B |
| Indoor unit | ASUH24KZAS | DIY-24-HP-WMAH-230D25-O |
| Outdoor unit | AOUH24KZAH1 | DIY-24-HP-C-230D25-O |
| Build | ||
| Indoor noise | 30–47 dB(A) | 20–54 dB(A) |
| Outdoor noise | 51 dB(A) | 58.5 dB(A) |
| Wi-Fi | Built in | Built in |
| Room size (maker) | - | up to 1,050 sq ft |
| Weight | indoor 36 lb / outdoor 117 lb | indoor 35.9 lb / outdoor 122.8 lb |
| Warranty | 10 yr compressor, 10 yr parts | 7 yr compressor, 5 yr parts |
| Warranty with DIY install | No, a licensed installer is required | Yes |