Brand guide · United States · checked October 19, 2026
Fujitsu heat pumps
Fujitsu is part of the Paloma Rheem Holdings family. ENERGY STAR lists 130 Fujitsu outdoor models certified for the US, 98 of them cold-climate, and its best certified pairing heats at a COP of 2.62 at 5°F.
Fujitsu at a glance
- Who owns it
- GENERAL Inc. (formerly Fujitsu General Ltd., renamed January 1, 2026), now a member of the Paloma Rheem group (Paloma Rheem Holdings, Japan, parent of Rheem). Paloma Rheem's tender offer settled June 5, 2025 (46.56% of voting rights; Fujitsu Ltd's 44.02% stake was excluded, and the deal plan had the company buy it back so Paloma Rheem would own 100%). The shares were delisted in August 2025, and on Aug 22, 2025 the company said it had completed the procedures. The US distributor Fujitsu General America became GENERAL HVAC Solutions America, Inc. (GHSA).
- Sister brands
- Rheem, Ruud, Friedrich, WeatherKing, Sure Comfort
- Headquarters
- Kawasaki, Japan (GENERAL Inc.); group parent Paloma Rheem Holdings, Japan
- How it's sold
- Contractor-installed
- Price tier
- Budget to premium. Fujitsu labels its own wall-mount tiers from 'Standard-Tier' Altair 300 to 'Top-Tier' Orion XLTH+. No independent installed-price data was verified.
- What it makes
- ductless mini-split, multi-zone, ducted mini-split, ducted central
- Names on ENERGY STAR's list
- Fujitsu (certified by Fujitsu General America, Inc.)
Product lines
The current residential heat pump lines we found on Fujitsu's own pages, with the low-temperature claim in the maker's words. 5 of 7 are sold as cold-climate.
| Line | Type | Cold-climate | Maker's low-temperature claim | Refrigerant |
|---|---|---|---|---|
| AIRSTAGE Orion XLTH+ wall-mounted (KTAP1) | ductless mini-split | Yes | “Heating down to -22°F (-30°C) without sacrificing heating capacity at low outdoor temperatures”; heating operation range “-22°F to 75°F (-30°C to 24°C)” | R-32 |
| AIRSTAGE Orion XLTH wall-mounted (KZAH1) | ductless mini-split | Yes | “Heating down to -15°F (-26°C) without sacrificing heating capacity at low outdoor temperatures”; heating operation range “-15°F to 75°F (-26°C to 24°C)” | R-32 |
| AIRSTAGE Aquila XLTH multi-zone outdoor unit (2-4 zones) | multi-zone | Yes | XLTH series: “Extra Low Temperature Heating Down to -15ºF” | R-32 |
| AIRSTAGE Slim Duct (medium static), available in XLTH | ducted mini-split | Yes | XLTH versions: “Extra Low Temperature Heating Down to -15ºF” | R-32 |
| AIRSTAGE Multi-Position Air Handling Unit (KUAS1M), available in XLTH | ducted central | Yes | XLTH versions: “Extra Low Temperature Heating Down to -15ºF” | R-32 |
| AIRSTAGE Altair 700 / 500 / 300 wall-mounted (better, good and standard tiers) | ductless mini-split | No | Altair 700: “Heating down to 5°F (-15°C) without sacrificing heating capacity at low outdoor temperatures” | R-32 |
| AIRSTAGE Aquila standard multi-zone outdoor unit (2-5 zones) | multi-zone | No | No low-temperature figure published | R-32 |
Certified models with the best cold-weather numbers
From ENERGY STAR's list for the US (updated October 19, 2026): each row is one outdoor unit with its best certified pairing. 76 of 130 Fujitsu outdoor models use R-454B or R-32; the tables show those.
Mini-splits and multi-splits (89 models)
| Outdoor / indoor model | Size | Heat at 5°F | COP at 5°F | HSPF2 | SEER2 | Refrigerant | AHRI # |
|---|---|---|---|---|---|---|---|
| AOUH12KTAP1 ASUH12KTAS AIRSTAGE H-Series | 15,300 BTU/h 1-ton | 16,200 BTU/h 106% of rated | 2.62 | 13.7 | 31.5 | R-32 ENERGY STAR Cold Climate | 216018256 |
| AOUH15KTAP1 ASUH15KTAS AIRSTAGE H-Series | 17,400 BTU/h 1-ton | 18,400 BTU/h 106% of rated | 2.52 | 13.0 | 28.7 | R-32 ENERGY STAR Cold Climate | 216018257 |
| AOUH09KTAP1 ASUH09KTAS AIRSTAGE H-Series | 12,000 BTU/h 1-ton | 17,000 BTU/h 142% of rated | 2.48 | 14.0 | 33.5 | R-32 ENERGY STAR Cold Climate | 216018255 |
| AOUK024SSAN7 J-7S | 28,000 BTU/h 2-ton | 26,200 BTU/h 94% of rated | 2.44 | 11.3 | 22.2 | R-32 ENERGY STAR Cold Climate | 216372779 |
| AOUH18KUAS1 AMUH18KUAS AIRSTAGE H series | 21,600 BTU/h 1.5-ton | 17,300 BTU/h 80% of rated | 2.40 | 10.5 | 19.2 | R-32 ENERGY STAR Cold Climate | 217290593 |
| AOUH12KMAS1 ASUH12KMAS AIRSTAGE H series | 14,000 BTU/h 1-ton | 10,600 BTU/h 76% of rated | 2.38 | 11.2 | 27.5 | R-32 ENERGY STAR Cold Climate | 214390708 |
Central (ducted) split systems (41 models)
| Outdoor / indoor model | Size | Heat at 5°F | COP at 5°F | HSPF2 | SEER2 | Refrigerant | AHRI # |
|---|---|---|---|---|---|---|---|
| FOP1948MJAYCA FHRAVM4821S*YECA F Series | 45,500 BTU/h 4-ton | 42,000 BTU/h 92% of rated | 2.10 | 10.0 | 19.0 | R-454B | 215611121 |
| FOP1936MJAYCA FHRAVM3621M*YECA F Series | 34,200 BTU/h 3-ton | 29,400 BTU/h 86% of rated | 2.10 | 9.5 | 20.0 | R-454B ENERGY STAR Cold Climate | 215611120 |
| WP15AY36AJ2N FCCN3621SYTA W Series | 34,200 BTU/h 3-ton | 18,500 BTU/h 54% of rated | 2.00 | 7.8 | 15.2 | R-454B | 216685541 |
| WP15AY18AJ2N FHFSTT2421S*YTNA W Series | 17,100 BTU/h 1.5-ton | 8,600 BTU/h 50% of rated | 2.00 | 8.1 | 15.2 | R-454B ENERGY STAR Cold Climate | 216685656 |
| WP15AY42AJ2N FCCN4821SYTA W Series | 40,000 BTU/h 3.5-ton | 19,300 BTU/h 48% of rated | 2.00 | 8.1 | 15.2 | R-454B ENERGY STAR Cold Climate | 216685384 |
| FOP1542TJAYNA FCCN4821SYTA F Series | 40,000 BTU/h 3.5-ton | 19,300 BTU/h 48% of rated | 2.00 | 8.1 | 16.0 | R-454B ENERGY STAR Cold Climate | 216686206 |
Most efficient for cooling
| Outdoor / indoor model | Size | SEER2 | EER2 | HSPF2 | COP at 5°F | Refrigerant | AHRI # |
|---|---|---|---|---|---|---|---|
| AOUH09KTAP1 ASUH09KTAS AIRSTAGE H-Series | 12,000 BTU/h 1-ton | 33.5 | 19.1 | 14.0 | 2.48 | R-32 ENERGY STAR Cold Climate | 216018255 |
| AOUH09KZAH1 ASUH09KZAS AIRSTAGE H-Series | 12,000 BTU/h 1-ton | 33.1 | 18.8 | 13.3 | 2.26 | R-32 ENERGY STAR Cold Climate | 214888800 |
| AOUH12KTAP1 ASUH12KTAS AIRSTAGE H-Series | 15,300 BTU/h 1-ton | 31.5 | 16.7 | 13.7 | 2.62 | R-32 ENERGY STAR Cold Climate | 216018256 |
| AOUH12KZAH1 ASUH12KZAS AIRSTAGE H-Series | 16,000 BTU/h 1-ton | 30.5 | 16.0 | 12.7 | 2.16 | R-32 ENERGY STAR Cold Climate | 214888802 |
Look up any pairing by its AHRI number in the AHRI Directory ↗ or search the model in ENERGY STAR's product finder ↗. Ratings are for the exact indoor and outdoor pairing shown.
Warranty
Registration: Standard 5-year parts and 7-year compressor. Online registration within 60 days of installation is needed for the 10-year terms (12 years if a Fujitsu Elite Contractor installs it). Standard coverage needs no registration in California, Florida, Georgia or Quebec.
Labour: None: “THESE LIMITED WARRANTIES DO NOT INCLUDE LABOR”
Same statement as the US (it names the US and Canada): standard 5-year parts and 7-year compressor; 10 years with online registration within 60 days, 12 years with a Fujitsu Elite Contractor. Quebec residents need not register for standard coverage.
Strengths and watch-outs
Strengths
- Strong cold-climate flagship: Orion XLTH+ heats to -22°F (-30°C) “without sacrificing heating capacity” (maker claim)
- 10-year parts and compressor with 60-day online registration, 12 years with a Fujitsu Elite Contractor (R-32 H-Series statement, Oct 2025)
- R-32 across the new AIRSTAGE ductless lineup (maker statement; ENERGY STAR lists AIRSTAGE H-series as R-32 for the US and Canada)
- Now in the same group as Rheem; Fujitsu says it has supplied and co-developed products with Rheem in North America since 2016
Watch-outs
- Brand in transition: the company became GENERAL Inc. on Jan 1, 2026 and says it will “gradually and smoothly transition the FUJITSU brand overseas”; the residential line is now sold as Fujitsu AIRSTAGE (Orion, Altair, Aquila), and 'Halcyon' survives only in legacy page paths and the R-410A warranty file
- The warranty excludes systems bought from online retailers or through liquidation or closeout
- Unregistered systems keep only 5-year parts / 7-year compressor (60-day registration window)
- Older R-410A H-Series and J-Series units are covered only if installed before 2028
Which rebates Fujitsu models fit
Every model in these tables is ENERGY STAR certified, which is the federal equipment rule for the Home Electrification and Appliance Rebates where your state runs them. 98 Fujitsu outdoor models also meet ENERGY STAR Cold Climate, which several utility programs require. The 25C tax credit ended for heat pumps placed in service after December 31, 2025.
Rebate rules by metro:
Recent news
- Fujitsu General renamed GENERAL Inc.; says the FUJITSU brand will be transitioned overseas gradually generalww.com ↗
- Fujitsu General America to be renamed GENERAL HVAC Solutions America, Inc. generalww.com ↗
- Fujitsu General delisted and said it was starting anew as a member of the Paloma Rheem Group generalww.com ↗
- Tender offer settled June 5, 2025: Paloma Rheem became the largest shareholder with 46.56% of voting rights generalww.com ↗
- Paloma Rheem Holdings announced a planned tender offer for Fujitsu General at ¥2,808 per share, aiming to take it private generalww.com ↗
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Sources
Model counts and ratings: ENERGY STAR Certified Heat Pumps, updated October 19, 2026. Brand facts checked October 19, 2026 on:
- GENERAL Inc.: Notice of Company Name Change (Jan 1, 2026)
- Fujitsu General Starts anew as a Member of the Paloma Rheem Group (Aug 22, 2025)
- Notice of Plans to Change Trade Names of Consolidated Subsidiaries (Dec 18, 2025)
- Planned tender offer by Paloma Rheem Holdings (Jan 6, 2025)
- Results of tender offer (May 29, 2025)
- GENERAL Inc. news releases
- Fujitsu AIRSTAGE US site (GENERAL HVAC Solutions America)
- AIRSTAGE wall-mounted lineup
- AIRSTAGE Orion XLTH+
- AIRSTAGE Orion XLTH
- AIRSTAGE Altair 700
- AIRSTAGE R-32 multi-zone outdoor units
- XLTH Low Temp Heating
- Next Generation Refrigerants (R-32)
- AIRSTAGE warranty documents
- R-32 H-Series/J-Series limited warranty (GHSA, Oct 2025)
- ENERGY STAR Certified Heat Pumps dataset (rows updated 2026-10-19)