The maker's photo for this series, not this exact size; the outdoor unit grows with capacity
Fujitsu General · Single-Zone
ASUH24KPAS / AOUH24KPAS1
~$2,957approximate retailer price at last check, equipment only
Best forLarge rooms in mild climates where a branded 24k is wanted without the XLTH price.
This is Fujitsu's 24,000 BTU Altair 500, the standard-tier counterpart to the XLTH. It rates 21.5 SEER2 and 10 HSPF2, publishes up to 24,400 BTU of cooling and 29,000 BTU of heating, and covers about 960 sq ft. Heating stops at 5°F, so this is the one for a warmer climate or a space where backup heat exists. At about $2,960 it is roughly $1,600 cheaper than the 24k XLTH and $1,850 cheaper than the Mitsubishi GX24, which is the main reason to choose it. The lineset is 1/4 x 1/2 inch, smaller than the XLTH 24k. Wi-Fi is via a USB adapter accessory rather than built in.
At 5°F it still makes 83% of its rated heat, according to the certified NEEP listing for this pairing. Fujitsu General rates it to keep running down to 5°F.
Pairing: AOUH24KPAS1 with ASUH24KPAS. Checked October 8, 2026 on NEEP's ccASHP list; a different head or condenser posts different numbers.
No, it has a 5°F heating limit. NEEP certifies 24,000 BTU at 47°F but 20,000 BTU at 5°F, with a COP of 2.13. It suits mild and moderate winters; for harsh ones step up to the Orion XLTH 24k.
The Altair 24k is about $2,957 against about $4,559, a difference of roughly $1,600. The XLTH is rated 24 SEER2 and 11.9 HSPF2 against the Altair's 21.5 and 10, and certifies 25,800 BTU at 5°F.
About 960 sq ft is the listed figure. That works for a large living area or small open-plan home in a mild climate.
Base coverage is 5 years on parts and 7 on the compressor. Registering within 60 days raises it to 10 years, and an install by a Fujitsu Elite contractor raises it to 12.
Series photoFujitsu General · Single-Zone
~$3,053
Cold-climate buyers who want the best paper specs in the 12k flagship class and have a Fujitsu Elite contractor nearby.
Fujitsu General · Single-Zone
~$2,789
Small, well-insulated spaces — bedrooms, ADUs, passive-house builds — where maximum efficiency justifies a premium per-BTU price.
Series photoFujitsu General · Single-Zone
~$3,274
Cold-climate bedrooms and living rooms where you want a premium Japanese-brand unit for less than the Mitsubishi FX.