SplitAtlas

Fujitsu / AIRSTAGE H-series

Fujitsu AIRSTAGE H-series 36k XLTH Circular Cassette R-32 208/230V Mini-Split

Certified capacity
36,000 BTU/h[2]
SEER2
22 SEER2[2]
Heating floor
-15 F[3]
Voltage
208/230V[1]
Install path
Professional install

The Fujitsu AIRSTAGE H-series XLTH Circular-Flow Cassette 36k pairs AUUH36KUAS with AOUH36KUAH1 for a professional, dealer-quoted circular-flow ceiling cassette installation instead of a wall head. It certifies at 36,000 BTU cooling and 38,000 BTU heating at 47F, with 22 SEER2, 12.7 EER2, and 10.7 HSPF2.

Its certified 5F output is 40,000 BTU, matching or beating the 17F rating, so it is a serious cold-weather candidate. Compared with the standard AOUH36KUAS1 pairing at the same head family and capacity class, this XLTH version raises 5F heat from 31,000 to 40,000 BTU; choose it when winter output matters more than lowest installed cost.

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

9.3 / 10

Methodology
Cooling efficiencyTop quartile

(22.0 SEER2) among 36k systems

Heating efficiencyTop quartile

(10.7 HSPF2) among 36k systems

Cold-weather performanceTop quartile

(5F certified capacity: 100% of the 47F rating; -15 F heating floor) among 36k systems

NoiseAbove average

(34 dBA indoor min / 53 dBA outdoor) among 36k 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

36,000BTU/h[2]

Rated heating

38,000BTU/h[2]

Best-fit use cases

Best for larger open rooms and light-commercial zones that need ceiling distribution instead of a wall head around 1,400-1,800 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

Best for

  • High-efficiency shortlists; SEER2 is 22.

Install difficulty

Professional install
  • Electrical: 208/230V; MCA 33.9 A; breaker/fuse 35 A.
  • Line set: connection type not sourced; precharged 98 ft; max 246 ft.

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
5
Newest source retrieved
Sep 12, 2026

Review methodology

Model context

Installation context
Ceiling-mounted indoor units need a workable ceiling cavity, panel clearance, drain routing, and service access. Cold-weather output still needs a load calculation and installation clearances, not just the published AHRI rating.

Strengths

  • 40,000 BTU at 5F from the XLTH outdoor, with circular-flow ceiling cassette distribution.
  • 22 SEER2 / 12.7 EER2 / 10.7 HSPF2 certified efficiency.
  • 25,200 BTU at 17F and 40,000 BTU at 5F give real winter numbers to size against.

Weaknesses

  • At 22 SEER2 it gives up 4.3 points to the 18k Circular-Flow Cassette in the same line, so the extra capacity costs efficiency, not just ceiling space. It also needs a 35 A circuit where the smallest cassette heads in the H-Series run on 15 A, so the electrical work is not a like-for-like swap.

Climate suitability

Minimum heating ambient
-15 F[3]
Heating capacity at −15°F
32,000 BTU/h[4]
Certified heating at 5F
40,000 BTU/h[2]
Rated heating at 17F
25,200 BTU/h[2]
Rated heating at 47F
38,000 BTU/h[2]

Specifications

Show
Manufacturer
Fujitsu
Brand
Fujitsu
Product line
AIRSTAGE H-series
Model number
AUUH36KUAS indoor / AOUH36KUAH1 outdoor
Indoor unit model
AUUH36KUAS
Outdoor unit model
AOUH36KUAH1
Number of zones
1
Max indoor units
not published
Rated cooling capacity
36,000 BTU/h[2]
Rated heating capacity
38,000 BTU/h[2]
Voltage
208/230V[1]
MCA
33.9 A[1]
Maximum fuse or breaker size
35 A[1]
Breaker needed
not published
SEER2
22 SEER2[2]
EER2
12.7 EER2[2]
HSPF2 (Region 4)
10.7 HSPF2[2]
HSPF2 (Region 5)
not published
COP
not published
COP at 47F
not published
COP at 5F
2 COP[2]
Minimum outdoor heating temperature
-15 F[3]
Minimum outdoor cooling temperature
-5 F[3]
Maximum outdoor temperature
122 F[3]
Indoor noise range
cooling 34-45; heating 34-45 dB(A)[1]
Outdoor noise rating
53 dBA[1]
Indoor weight
57 lb[1]
Outdoor weight
159 lb[1]
Refrigerant
R-32[2]
Refrigerant charge
not published
Manufacturer coverage
not published
Line-set size
03/8 in liquid / 05/8 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
246 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
217895709[2]
Warranty
not published
Install path
Professional install
Retail price
Authorized dealers only
Available retailers
not published
Manual links
Fujitsu AUUH36KUAS installation manual, Fujitsu Connect product record AOUH36KUAH1, Fujitsu AIRSTAGE H-series Circular-Flow Cassette submittal - AUUH36KUAS / AOUH36KUAH1
Specification sheet
Fujitsu AIRSTAGE H-series Circular-Flow Cassette submittal - AUUH36KUAS / AOUH36KUAH1
Last sourced date
Aug 5, 2026

Electrical requirements

Show
Voltage
not published
Voltage range
208/230V[1]
Phase
single-phase[1]
Frequency
not published
MCA
33.9 A[1]
Breaker needed
not published
Maximum breaker size
35 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
03/8 in[1]
Suction line
05/8 in[1]
Line connection type
not published
Precharged length
98 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
246 ft[1]
Max line set per indoor
not published
Max height between indoor units
not published
Indoor dimensions
39-5/16 x 37 x 12-5/8 in[1]
Outdoor dimensions
39-5/16 x 37 x 12-5/8 in[1]
Indoor weight
57 lb[1]
Outdoor weight
159 lb[1]
Drain size
not published

Related systems and guides

Frequently asked questions

Can I install the Fujitsu AIRSTAGE H-series XLTH Circular-Flow Cassette 36,000 BTU R-32 208/230V (AUUH36KUAS / AOUH36KUAH1) myself, or do I need a pro?
Fujitsu AIRSTAGE H-series XLTH Circular-Flow Cassette 36,000 BTU R-32 208/230V (AUUH36KUAS / AOUH36KUAH1) 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 XLTH Circular-Flow Cassette 36,000 BTU R-32 208/230V (AUUH36KUAS / AOUH36KUAH1) keep heating in a cold winter?
The AHRI/ENERGY STAR certification lists 40,000 BTU/h of heating capacity at 5F. Rated heating operation extends down to -15 F. Certified heating efficiency is 10.7 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 XLTH Circular-Flow Cassette 36,000 BTU R-32 208/230V (AUUH36KUAS / AOUH36KUAH1) need?
Published electrical requirements: 208/230V voltage, 33.9 A minimum circuit ampacity, and 35 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 246 ft. The outdoor unit's factory charge covers up to 98 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 Circular-Flow Cassette submittalSourced - manufacturer technical document

    Covers Maximum breaker size, Minimum circuit ampacity, Phase, Voltage range, Indoor dimensions, Indoor noise 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.: AUUH36KUAS & AOUH36KUAH1 submittalSourced - manufacturer technical document

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

  4. Northeast Energy Efficiency Partnerships: NEEP ccASHP Product List record 306754Sourced - primary source

    Covers Maximum heating capacity at low temperature, Low-temperature heating capacity test point

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

    Covers Legacy compressor warranty value, Legacy warranty value

Last updated

Aug 5, 2026