SplitAtlas

Fujitsu / AIRSTAGE H-series

Fujitsu AIRSTAGE H-series 24k Air Handler R-32 208/230V Mini-Split

Certified capacity
24,000 BTU/h[2]
SEER2
17.7 SEER2[2]
Heating floor
-5 F[3]
Voltage
208/230V[1]
Install path
Professional install

The Fujitsu AIRSTAGE H-series Multi-Position Air Handler 24k pairs AMUH24KUAS with AOUH24KUAS1 for a professional, dealer-quoted multi-position air handler installation instead of a wall head. It certifies at 24,000 BTU cooling and 27,000 BTU heating at 47F, with 17.7 SEER2, 11.8 EER2, and 10.1 HSPF2.

Its certified 5F output is 24,600 BTU, matching or beating the 17F rating, so it is a serious cold-weather candidate. The catch is that it behaves like a compact air handler, so duct sizing, filtration access, condensate management, and optional heat-kit planning matter.

1 zoneProfessional installCurrent

Refrigerant generation

R-32 - current-generation refrigerant

This brand doesn't honor its warranty on systems bought online. Buy it through a local contractor who installs it: get quotes from installers in your area, and ask whether they're an authorized dealer for this brand.

Get installation quotes
Error Codes
Data completeness: 100%
Last sourced
Aug 5, 2026

SplitAtlas score

8.5 / 10

Methodology
Cooling efficiencyBottom quartile

(17.7 SEER2) among 24k systems

Heating efficiencyTop quartile

(10.1 HSPF2) among 24k systems

Cold-weather performanceAbove average

(5F certified capacity: 91.1% of the 47F rating; -5 F heating floor) among 24k systems

NoiseTop quartile

(28 dBA indoor min / 54 dBA outdoor) among 24k systems

Documentation & partsTop quartile

(3 manuals; spec sheet; 36 error-code rows) across the catalogue

Not evaluated

  • Installation accessibility — not applicable (professional install)N/A

    professional install - DIY-accessibility not applicable

  • Price-to-value — not evaluatedN/A

    This is a professionally installed, quote-only system, so we can't score its price. Get an installed quote to compare real cost.

    Get a quote

Key ratings

Rated cooling

24,000BTU/h[2]

Rated heating

27,000BTU/h[2]

Best-fit use cases

Best for closets, attics, and retrofit duct runs where a compact air handler is a better fit than a wall head around 900-1,200 sq ft, where the owner wants Fujitsu dealer support and the alternate indoor form is worth the installation work.

Buyer review snapshot

Best for / skip if

Skip if

  • Top-efficiency cooling is the priority; SEER2 is 17.7.

Install difficulty

Professional install
  • Electrical: 208/230V; MCA 19.2 A; breaker/fuse 20 A.
  • Line set: connection type not sourced; precharged 66 ft; max 164 ft.

Alternatives

Availability and price context

Fujitsu sells this system through authorized dealers and contractors, not online, and doesn't honor its warranty on systems bought online. Get installation quotes and ask whether the installer is an authorized Fujitsu dealer.

Purchase channel policy

Fujitsu/GENERAL says online retail sales of its products are not authorized; buyers should treat public online carts as outside the approved purchase channel.

Warranty consequence
Warranty becomes null and void for online purchases.
Authorized channel
Authorized local distributor or contractor channel; password-protected distributor sites are for qualified technicians.

Any online offer for this brand should be treated as a warranty-risk warning, not a recommendation.

Compare online-purchase warranty rules by brand

Source: Fujitsu General America, Inc.: GENERAL AIRSTAGE MINI-SPLITS FAQ - online purchase policy; retrieved Aug 12, 2026.

Source date

Model data sourced
Aug 5, 2026
Page reviewed
Aug 5, 2026
Source-backed records
4
Newest source retrieved
Aug 5, 2026

Review methodology

Model context

Installation context
Cold-weather output still needs a load calculation and installation clearances, not just the published AHRI rating.

Strengths

  • 24,000 BTU of multi-position air handler capacity on current R-32 refrigerant.
  • 17.7 SEER2 / 11.8 EER2 / 10.1 HSPF2 certified efficiency.
  • 18,200 BTU at 17F and 24,600 BTU at 5F give real winter numbers to size against.

Weaknesses

  • The catch is that it behaves like a compact air handler, so duct sizing, filtration access, condensate management, and optional heat-kit planning matter.

Climate suitability

Minimum heating ambient
-5 F[3]
Certified heating at 5F
24,600 BTU/h[2]
Rated heating at 17F
18,200 BTU/h[2]
Rated heating at 47F
27,000 BTU/h[2]

Specifications

Show
Manufacturer
Fujitsu
Brand
Fujitsu
Product line
AIRSTAGE H-series
Model number
AMUH24KUAS indoor / AOUH24KUAS1 outdoor
Indoor unit model
AMUH24KUAS
Outdoor unit model
AOUH24KUAS1
Number of zones
1
Max indoor units
not published
Rated cooling capacity
24,000 BTU/h[2]
Rated heating capacity
27,000 BTU/h[2]
Voltage
208/230V[1]
MCA
19.2 A[1]
Maximum fuse or breaker size
20 A[1]
Breaker needed
not published
SEER2
17.7 SEER2[2]
EER2
11.8 EER2[2]
HSPF2 (Region 4)
10.1 HSPF2[2]
HSPF2 (Region 5)
not published
COP
not published
COP at 47F
3.68 COP[1]
COP at 5F
2.14 COP[2]
Minimum outdoor heating temperature
-5 F[3]
Minimum outdoor cooling temperature
-5 F[3]
Maximum outdoor temperature
122 F[3]
Indoor noise range
cooling 29-42; heating 28-42 dB(A)[1]
Outdoor noise rating
54 dBA[1]
Indoor weight
110 lb[1]
Outdoor weight
115 lb[1]
Refrigerant
R-32[1]
Refrigerant charge
53 oz[1]
Manufacturer coverage
not published
Line-set size
1/4 in liquid / 1/2 in suction
Included line-set length
Fujitsu publishes pre-charge length and flared line sizes; the installer supplies the line set.
Maximum line-set length
164 ft[1]
Max line set per indoor
not published
Maximum elevation difference
98 ft[1]
Max height between indoor units
not published
Wi-Fi support
supported[1]
Energy Star status
ENERGY STAR certified[2]
AHRI certification number
217290594[2]
Warranty
not published
Install path
Professional install
Retail price
Authorized dealers only
Available retailers
not published
Manual links
Fujitsu AMUH24KUAS installation manual, Fujitsu Connect product record AOUH24KUAS1, Fujitsu AIRSTAGE H-series Multi-Position Air Handler submittal - AMUH24KUAS / AOUH24KUAS1
Specification sheet
Fujitsu AIRSTAGE H-series Multi-Position Air Handler submittal - AMUH24KUAS / AOUH24KUAS1
Last sourced date
Aug 5, 2026

Electrical requirements

Show
Voltage
not published
Voltage range
208/230V[1]
Phase
single-phase[1]
Frequency
60 Hz[1]
MCA
19.2 A[1]
Breaker needed
not published
Maximum breaker size
20 A[1]
Maximum fuse size
not published
Maximum cooling current
not published
Maximum heating current
not published
Manufacturer wire notes
not published

Installation considerations

Show
Liquid line
1/4 in[1]
Suction line
1/2 in[1]
Line connection type
not published
Precharged length
66 ft[1]
Included line-set length
Fujitsu publishes pre-charge length and flared line sizes; the installer supplies the line set.
Maximum line-set length
164 ft[1]
Max line set per indoor
not published
Max height between indoor units
not published
Indoor dimensions
43 x 17-1/2 x 21 in[1]
Outdoor dimensions
31 x 37 x 12-5/8 in[1]
Indoor weight
110 lb[1]
Outdoor weight
115 lb[1]
Drain size
1/2 in I.D.; 5/8 to 11/16 in O.D.[1]

Related systems and guides

Frequently asked questions

Can I install the Fujitsu AIRSTAGE H-series Multi-Position Air Handler 24,000 BTU R-32 208/230V (AMUH24KUAS / AOUH24KUAS1) myself, or do I need a pro?
Fujitsu AIRSTAGE H-series Multi-Position Air Handler 24,000 BTU R-32 208/230V (AMUH24KUAS / AOUH24KUAS1) is built for professional installation: the line set must be flared, evacuated, and charged, which requires EPA-certified refrigerant handling. Installing it outside the manufacturer's requirements can void the warranty, so budget for a qualified HVAC installer.
Will the Fujitsu AIRSTAGE H-series Multi-Position Air Handler 24,000 BTU R-32 208/230V (AMUH24KUAS / AOUH24KUAS1) keep heating in a cold winter?
The AHRI/ENERGY STAR certification lists 24,600 BTU/h of heating capacity at 5F. Rated heating operation extends down to -5 F. Certified heating efficiency is 10.1 HSPF2. Match those numbers against your climate's design temperature - in cold regions, output at 5F matters far more than the nameplate capacity measured at 47F.
What electrical circuit does the Fujitsu AIRSTAGE H-series Multi-Position Air Handler 24,000 BTU R-32 208/230V (AMUH24KUAS / AOUH24KUAS1) need?
Published electrical requirements: 208/230V voltage, 19.2 A minimum circuit ampacity, and 20 A maximum breaker or fuse sizing. Confirm the final circuit against the unit nameplate and local code with a licensed electrician.
How far can the outdoor unit be from the indoor head?
The published maximum line-set length is 164 ft. The outdoor unit's factory charge covers up to 66 ft of line; longer runs need added refrigerant. Measure the planned routing before ordering.

Data sources

Show
  1. Fujitsu General America, Inc.: Fujitsu AIRSTAGE H-series Multi-Position Air Handler submittalSourced - manufacturer technical document

    Covers Frequency, electrical_spec.guaranteed_voltage_range, Maximum breaker size, Minimum circuit ampacity, Phase, Voltage range and more

  2. Air-Conditioning, Heating, and Refrigeration Institute: AHRI Active form-factor row 217895718Sourced - AHRI directory

    Covers AHRI certification number, Rated cooling capacity, COP at 5F, EER2, Energy Star status, Rated heating capacity and more

  3. Fujitsu General America, Inc.: AMUH24KUAS & AOUH24KUAS1 submittalSourced - manufacturer technical document

    Covers Minimum outdoor cooling temperature, Minimum outdoor heating temperature, Maximum outdoor temperature

  4. Fujitsu General America, Inc.: Fujitsu AIRSTAGE warranty pageSourced - manufacturer product page

    Covers Legacy compressor warranty value, Legacy warranty value

Last updated

Aug 5, 2026