AirGreenFUJITSUAIRSTAGE
FUJITSU AIRSTAGE · AQUILA · AQUILA XLTHFUJITSU multi-zone at AirGreenAuthorized dealer at the highest level of the AIRSTAGE Elite program.
Elite Plus
AirGreen × FUJITSU AIRSTAGEAquila · Aquila XLTH276 approved combinations2 to 5 roomsDown to -26 °CUp to $3,720 in LogisVertElite Plus dealer
01 · What only the Fujitsu multi-zone does

One unit outside, one temperature per room.

Seven facts from Fujitsu’s tables and sheets, the ENERGY STAR list and the LogisVert guide. Sources are at the bottom of the page.

276

Fujitsu approves 276 head combinations across its four Aquila outdoor unit sizes.

-26 °C

Two R-32 families: Aquila heats down to -15 °C, Aquila XLTH down to -26 °C with a heated base pan.

3 certificates

Each outdoor unit has three certificates: wall heads, ducted heads or a mix. The mixed certificate is the average of the other two.

65.9%

The standard Aquila 36,000 is the only Aquila without the Cold Climate mark: at -15 °C it keeps 65.9% of its 8 °C capacity.

1 system

LogisVert treats a multi-zone as one system: the amount depends on the outdoor unit, not on the number of heads.

Together

All heads on one outdoor unit heat together or cool together.

25 m

Up to 25 m of line set per head, and 50 to 80 m in total depending on the model.

02 · The zone builder

Build your rooms, the tool checks Fujitsu’s tables.

Pick an outdoor unit, then add one head per room. The 276 combinations approved by Fujitsu are in the tool; your advisor then confirms with Fujitsu’s design software.

Outdoor unitHeadsHead sizesAccepted totalCombinationsLogisVert
Aquila 18,0002–27k · 9k · 12k · 15k14–24 k8$1,716
Aquila 24,0002–37k · 9k · 12k · 15k · 18k14–31 k23$1,872
Aquila 36,0002–47k · 9k · 12k · 15k · 18k · 24k25–46 k74$1,180
Aquila 45,0002–57k · 9k · 12k · 15k · 18k · 24k34–58 k171$3,720
Aquila XLTH 18,0002–27k · 9k · 12k · 15k14–24 k8$1,776
Aquila XLTH 24,0002–37k · 9k · 12k · 15k · 18k14–31 k23$1,944
Aquila XLTH 36,0002–47k · 9k · 12k · 15k · 18k · 24k25–46 k74$2,928

Fujitsu combination tables (FG8159A, rev. 2/2025).

03 · The Aquila family

Two, three, four or five rooms.

The number of approved combinations, by outdoor unit and by number of rooms. Tap a number to open the page for that number of zones.

Outdoor unit2 zones3 zones4 zones5 zones
Aquila 18,000
AOUH18KWAS2
8 combinations–––
Aquila 24,000
AOUH24KWAS3
13 combinations10 combinations––
Aquila 36,000
AOUH36KWAS4
8 combinations35 combinations31 combinations–
Aquila 45,000
AOUH45KWAS5
5 combinations38 combinations69 combinations59 combinations
Aquila XLTH 18,000
AOUH18KWAH2
8 combinations–––
Aquila XLTH 24,000
AOUH24KWAH3
13 combinations10 combinations––
Aquila XLTH 36,000
AOUH36KWAH4
8 combinations35 combinations31 combinations–

Number of head combinations approved by Fujitsu, by number of rooms. Aquila and Aquila XLTH units of the same size share one table.

One page per number of rooms

04 · The 16 R-32 systems

Every system offered, with its sheet.

Tap a system: outdoor unit, possible heads, heat rated at -15 °C, efficiency and indicative LogisVert amount.

ModelHeats down toMax at -15 °CSEER2HSPF2LogisVertAHRI
Aquila 18,000 BTU/h, 2 zones-15 °C–2210.5$1,716215447685
Aquila 24,000 BTU/h, 2 zones-15 °C–2310.5$1,872215447687
Aquila 36,000 BTU/h, 2 zones-15 °C–2210$1,180215447689
Aquila 45,000 BTU/h, 2 zones-15 °C36,000 BTU/h2210$3,720215735280
Aquila XLTH 18,000 BTU/h, 2 zones-26 °C–2211$1,776215447691
Aquila XLTH 24,000 BTU/h, 2 zones-26 °C–23.511.5$1,944215447693
Aquila XLTH 36,000 BTU/h, 2 zones-26 °C36,400 BTU/h2210$2,928215735282
Aquila 24,000 BTU/h, 3 zones-15 °C–2310.5$1,872215447687
Aquila 36,000 BTU/h, 3 zones-15 °C–2210$1,180215447689
Aquila 45,000 BTU/h, 3 zones-15 °C36,000 BTU/h2210$3,720215735280
Aquila XLTH 24,000 BTU/h, 3 zones-26 °C–23.511.5$1,944215447693
Aquila XLTH 36,000 BTU/h, 3 zones-26 °C36,400 BTU/h2210$2,928215735282
Aquila 36,000 BTU/h, 4 zones-15 °C–2210$1,180215447689
Aquila 45,000 BTU/h, 4 zones-15 °C36,000 BTU/h2210$3,720215735280
Aquila XLTH 36,000 BTU/h, 4 zones-26 °C36,400 BTU/h2210$2,928215735282
Aquila 45,000 BTU/h, 5 zones-15 °C36,000 BTU/h2210$3,720215735280
05 · The wall heads

Two cabinets, six sizes.

The 7,000 to 15,000 BTU/h heads share one cabinet; the 18,000 and 24,000 a wider one. All go down to 21 or 29 dB(A) on quiet speed, according to Fujitsu.

1 mHeads from 7,000 to 15,000834 × 270 mm · 9.5 to 10 kgHeads of 18,000 and 24,000980 × 280 mm · 12.5 kg

Fronts drawn to scale, from the dimensions published by Fujitsu (ASUH07 to ASUH24KPAS).

06 · In deep cold

Aquila down to -15 °C, Aquila XLTH down to -26 °C.

Tap a temperature: the bars show the maximum heat published by Fujitsu, the red tick the ENERGY STAR value rated with wall heads.

Heat by outdoor unitTap a temperature
Size8.3 °C-8.3 °C-15 °C-26.1 °C
Aquila 18,000––––
Aquila 24,000––––
Aquila 36,000––––
Aquila 45,00050,000 BTU/h41,000 BTU/h36,000 BTU/h–
Aquila XLTH 18,000––––
Aquila XLTH 24,000–––14,000 BTU/h
Aquila XLTH 36,00042,000 BTU/h38,000 BTU/h36,400 BTU/h22,140 BTU/h

Bars: maximum heat published by Fujitsu, when it is. Red tick: ENERGY STAR value rated with wall heads. At -8 °C the ENERGY STAR value is a part-load test: it can be lower than at -15 °C.

At -15 °C, how much of the 8 °C heat is left?

Aquila 18,000
77.3%
Aquila 24,000
80%
Aquila 36,000
65.9%
Aquila 45,000
75%
Aquila XLTH 18,000
100%
Aquila XLTH 24,000
100.8%
Aquila XLTH 36,000
100%

Heat rated at -15 °C divided by heat rated at 8 °C (wall-head certificate). ENERGY STAR requires at least 70% for the cold-climate mark; in red, below the bar.

07 · Three certificates per unit

Wall heads, ducted or a mix: three different ratings.

Switch between the three: efficiency, heat rated at -8 °C and the LogisVert amount change with the type of heads.

Wall, mixed or ducted heads
Outdoor unitWall headsMixedDucted
Aquila 18,000SEER2 22 · HSPF2 10.5 · at -8 °C: 14,300 BTU/h · LogisVert $1,716SEER2 20.5 · HSPF2 10 · at -8 °C: 14,700 BTU/h · LogisVert $1,764SEER2 19 · HSPF2 9.5 · at -8 °C: 15,100 BTU/h · LogisVert $1,812
Aquila 24,000SEER2 23 · HSPF2 10.5 · at -8 °C: 15,600 BTU/h · LogisVert $1,872SEER2 21 · HSPF2 10 · at -8 °C: 15,600 BTU/h · LogisVert $1,872SEER2 19.5 · HSPF2 9.5 · at -8 °C: 15,600 BTU/h · LogisVert $1,872
Aquila 36,000SEER2 22 · HSPF2 10 · at -8 °C: 23,600 BTU/h · LogisVert $1,180SEER2 20.5 · HSPF2 9.5 · at -8 °C: 24,000 BTU/h · LogisVert $1,200SEER2 19 · HSPF2 9 · at -8 °C: 24,400 BTU/h · LogisVert $1,220
Aquila 45,000SEER2 22 · HSPF2 10 · at -8 °C: 31,000 BTU/h · LogisVert $3,720SEER2 20.5 · HSPF2 9.5 · at -8 °C: 30,800 BTU/h · LogisVert $3,696SEER2 19 · HSPF2 9 · at -8 °C: 30,600 BTU/h · LogisVert $3,672
Aquila XLTH 18,000SEER2 22 · HSPF2 11 · at -8 °C: 14,800 BTU/h · LogisVert $1,776SEER2 20.5 · HSPF2 10.5 · at -8 °C: 14,800 BTU/h · LogisVert $1,776SEER2 19 · HSPF2 10 · at -8 °C: 14,800 BTU/h · LogisVert $1,776
Aquila XLTH 24,000SEER2 23.5 · HSPF2 11.5 · at -8 °C: 16,200 BTU/h · LogisVert $1,944SEER2 22 · HSPF2 11 · at -8 °C: 16,200 BTU/h · LogisVert $1,944SEER2 20.5 · HSPF2 10.5 · at -8 °C: 16,200 BTU/h · LogisVert $1,944
Aquila XLTH 36,000SEER2 22 · HSPF2 10 · at -8 °C: 24,400 BTU/h · LogisVert $2,928SEER2 20.5 · HSPF2 9.5 · at -8 °C: 23,800 BTU/h · LogisVert $2,856SEER2 19 · HSPF2 9 · at -8 °C: 23,400 BTU/h · LogisVert $2,808

Each outdoor unit has three ENERGY STAR and AHRI certificates. AirGreen’s products ship with wall heads: the first certificate applies. The mixed certificate is the average of the other two.

08 · Installation

25 m per head, 50 to 80 m in total.

Pick the outdoor unit and drag the sliders: length of one line, height to the head. All the lines together have their own limit, just below.

One head, one line: place itDrag the sliders
ModelMax lengthMax heightPre-chargeMinimum
Aquila 18,00025 m15 m30 m5 m
Aquila 24,00025 m15 m30 m5 m
Aquila 36,00025 m15 m–5 m
Aquila 45,00025 m15 m–5 m
Aquila XLTH 18,00025 m15 m30 m5 m
Aquila XLTH 24,00025 m15 m–5 m
Aquila XLTH 36,00025 m15 m–5 m

All lines together: the maximum per unit

Aquila 18,000
50 m
Aquila 24,000
50 m
Aquila 36,000
70 m
Aquila 45,000
80 m
Aquila XLTH 18,000
50 m
Aquila XLTH 24,000
70 m
Aquila XLTH 36,000
70 m

Fujitsu: 25 m at most per head, 15 m of height to a head, 10 m between two heads.

09 · What you hear

A quiet head, a more present outdoor unit.

Wall heads from 21 dB(A) on quiet speed; the outdoor unit, from 47 to 56 dB(A) depending on size and mode. Fujitsu lab measurements.

ModelIndoor, quiet speedIndoor, high speedOutdoor unit
Aquila 18,00021 dB(A)–49 dB(A)
Aquila 24,00021 dB(A)–52 dB(A)
Aquila 36,00021 dB(A)–56 dB(A)
Aquila 45,00029 dB(A)–56 dB(A)
Aquila XLTH 18,00021 dB(A)–49 dB(A)
Aquila XLTH 24,00021 dB(A)–52 dB(A)
Aquila XLTH 36,00021 dB(A)–56 dB(A)

Levels published by Fujitsu, measured in a lab; at home, the room, the furniture and the distance change what you hear. Scale: Government of Québec reference points.

10 · Hydro-Québec LogisVert

From $1,180 to $3,720 with wall heads.

LogisVert pays by outdoor unit: $120 per 1,000 BTU/h of heat rated at -8 °C if it is cold climate, $50 otherwise. The standard Aquila 36,000, the only one without the cold-climate mark, gets the $50 rate.

ModelIndicative amountCalculation
Aquila 18,000 · AOUH18KWAS2$1,71614,300 BTU/h ÷ 1,000 × $120 = $1,716
Aquila 24,000 · AOUH24KWAS3$1,87215,600 BTU/h ÷ 1,000 × $120 = $1,872
Aquila 36,000 · AOUH36KWAS4$1,18023,600 BTU/h ÷ 1,000 × $50 = $1,180
Aquila 45,000 · AOUH45KWAS5$3,72031,000 BTU/h ÷ 1,000 × $120 = $3,720
Aquila XLTH 18,000 · AOUH18KWAH2$1,77614,800 BTU/h ÷ 1,000 × $120 = $1,776
Aquila XLTH 24,000 · AOUH24KWAH3$1,94416,200 BTU/h ÷ 1,000 × $120 = $1,944
Aquila XLTH 36,000 · AOUH36KWAH4$2,92824,400 BTU/h ÷ 1,000 × $120 = $2,928
ENERGY STAR required

Since November 26, 2025, only ENERGY STAR certified heat pumps qualify.

12,000 BTU/h minimum

The outdoor unit must be at least 12,000 BTU/h nominal in cooling.

Cap: 100% of the cost

The grant never exceeds the purchase and installation cost, before taxes.

9 months to apply

You apply no later than nine months after installation.

Apply for LogisVert no later than
July 8, 2027
All about LogisVert

One system, one amount: the amount depends on the outdoor unit and its certificate, not on the number of heads. Adding a head later does not earn a second amount.

11 · The previous generation

RLXFZ and RLXFZH: the R-410A multi-zones.

Fifteen R-410A products remain in AirGreen’s catalogue, with their own heads: generations are not mixed. Their LogisVert amount ranges from $0 to $2,568 per the ENERGY STAR list.

Outdoor unitHeadsHeats down toENERGY STAR15,000 headIndicative LogisVert
RLXFZ 18,000
AOU18RLXFZ
2-15 °Cstandardyes$695
RLXFZ 24,000
AOU24RLXFZ
2–3-15 °Cstandardyes$705
RLXFZ 36,000
AOU36RLXFZ1
3–4-15 °Cnot listedno$0
RLXFZ 45,000
AOU45RLXFZ
2–5-15 °Cnot listedno$0
RLXFZH 18,000
AOU18RLXFZH
2-26 °Ccold climateno$1,704
RLXFZH 24,000
AOU24RLXFZH
2–3-26 °Ccold climateno$1,848
RLXFZH 36,000
AOU36RLXFZH
2–4-26 °Ccold climateno$2,568

R-410A generation: Fujitsu’s 2016 multi-zone brochure and the ENERGY STAR list, read October 8, 2026. The 15,000 R-410A head (ASU15RLS2) is not compatible with the units marked “no”, according to Fujitsu.

12 · Six multi-zone rules

What to know before choosing.

One mode at a time All heads on one outdoor unit heat together or cool together, according to Fujitsu.

Capacity is shared When every head calls, total capacity is the outdoor unit’s; what is unused goes to the rooms still calling.

Only the combinations in the tables Fujitsu approves specific head combinations; the tables are not for sizing, hence the home visit.

One system, one amount For LogisVert, one outdoor unit and its heads are one system; adding or replacing a single head is not eligible.

The right certificate Wall heads only: non-ducted certificate. All ducted: ducted certificate. A mix: mixed certificate.

The right match Fujitsu’s warranty excludes incorrect matching of units: we pick the heads from the tables.

13 · The spec sheet

The outdoor units, line by line.

Aquila 18,000Aquila 24,000Aquila 36,000Aquila 45,000Aquila XLTH 18,000Aquila XLTH 24,000Aquila XLTH 36,000
Outdoor unitAOUH18KWAS2AOUH24KWAS3AOUH36KWAS4AOUH45KWAS5AOUH18KWAH2AOUH24KWAH3AOUH36KWAH4
Heads2–22–32–42–52–22–32–4
Heats down to-15 °C-15 °C-15 °C-15 °C-26 °C-26 °C-26 °C
Accepted heads total14,000–24,000 BTU/h14,000–31,000 BTU/h25,000–46,000 BTU/h34,000–58,000 BTU/h14,000–24,000 BTU/h14,000–31,000 BTU/h25,000–46,000 BTU/h
SEER2222322222223.522
HSPF210.510.510101111.510
Rated heat 8 / -8 / -15 °C22,000 / 14,300 / 17,00024,000 / 15,600 / 19,20036,400 / 23,600 / 24,00048,000 / 31,000 / 36,00022,000 / 14,800 / 22,00025,000 / 16,200 / 25,20036,400 / 24,400 / 36,400
Cold climateyesyesnoyesyesyesyes
Heated base pannonononoyesyesyes
Max total line set50 m50 m70 m80 m50 m70 m70 m
Breaker15 A20 A25 A30 A20 A25 A35 A
Outdoor sound (cool / heat)48 / 49 dB(A)50 / 52 dB(A)54 / 56 dB(A)54 / 56 dB(A)47 / 49 dB(A)50 / 52 dB(A)54 / 56 dB(A)
Size (w×h×d)820×716×315 mm820×716×315 mm820×884×315 mm940×998×320 mm820×884×315 mm820×884×315 mm940×998×320 mm
Weight45 kg46 kg58 kg74 kg53 kg54 kg70 kg
AHRI no. (wall heads)215447685215447687215447689215735280215447691215447693215735282
Indicative LogisVert$1,716$1,872$1,180$3,720$1,776$1,944$2,928

Fujitsu submittal sheets and the ENERGY STAR list, read October 8, 2026. Ratings with wall heads.

14 · Did you know

What the Aquila family tables tell.

Fujitsu approves 276 head combinations across its four Aquila outdoor units.

Source: Fujitsu

Each Aquila outdoor unit has three certificates: wall heads, ducted heads or a mix.

Source: ENERGY STAR, U.S. eCFR

The Aquila XLTH 24,000 is certified for more heat at -15 °C (25,200 BTU/h) than at 8 °C (25,000 BTU/h).

Source: ENERGY STAR

On XLTH models, an element warms the base of the outdoor unit below 2 °C so defrost water doesn’t freeze.

Source: Fujitsu

LogisVert’s "-8 °C" matches the 17 °F test point, -8.3 °C, printed on Fujitsu’s spec sheets.

Source: Hydro-Québec, Fujitsu

Aquila is the Latin name of the Eagle constellation, home of the star Altair.

Source: NASA, IAU

The 7,000 to 15,000 BTU/h wall heads go down to 21 dB(A) in quiet mode, according to Fujitsu. On Québec’s scale, a whisper heard a metre away is 20 dBA.

Source: Fujitsu, Government of Québec
15 · The Fujitsu warranty

Up to 12 years on parts and compressor.

The longest tier needs online registration within 60 days and a Fujitsu Elite contractor. At AirGreen, both are done for you.

12 yearsparts and compressor, on eligible models
Basic warranty5 years parts, 7 years compressor
7 yrs
Registered onlineWithin 60 days
10 yrs
Elite contractor + registeredThe AirGreen tier
12 yrs

In Québec, the basic warranty needs no registration; the 10- and 12-year tiers do. Source: Fujitsu limited warranty statement (R-32).

Online registration, 60 days

We register your unit with Fujitsu, free, on time.

Fujitsu Elite contractor

The condition for the 12-year tier. AirGreen is Elite Plus.

Licensed installer

The warranty requires a licensed contractor. RBQ 5645-9605-01.

Bought online: not covered.

Fujitsu’s text excludes systems bought from an online retailer.

AirGreen × FUJITSU AIRSTAGE

Fujitsu’s tables, AirGreen’s home visit.

The tables say what connects; they do not say what size each room needs. AirGreen measures each room, picks the heads, installs and registers the warranty.

FUJITSUAIRSTAGE

What FUJITSU AIRSTAGE brings

  • 276 combinationsApproved by Fujitsu, all in the tool.
  • Down to -26 °CWith the Aquila XLTH.
  • 2 to 5 roomsOn a single outdoor unit.
  • Up to 12 yearsParts and compressor, on Fujitsu’s conditions.
AirGreen

What AirGreen brings

  • Elite Plus dealerThe highest level of the AIRSTAGE Elite program.
  • Free home estimateWe measure and check the insulation and the location.
  • Warranty registered for youWith Fujitsu, within 60 days.
  • RBQ 5645-9605-01Subclasses 15.8, 15.10 and 16.

The result: a multi-zone where every head is the right size for its room.

16 · Our multi-zone installations

Recent installations, in photos.

Each article on our blog tells a real installation: the rooms, the outdoor unit and the lines.

17 · FUJITSU AIRSTAGE dealer – ELITE PLUS

Elite Plus: the highest level of the AIRSTAGE Elite program.

Fujitsu’s Japanese engineering, installed by an Elite Plus team across Montreal, Laval, Longueuil, the North Shore, the South Shore and Montérégie.

Elite Plus partnership

The highest level of the AIRSTAGE Elite program.

Advanced Fujitsu training

Our technicians take the manufacturer’s training on AIRSTAGE systems.

Careful commissioning

Vacuum, refrigerant settings, electrical hookup, set up for winter.

Genuine parts and Fujitsu support

Manufacturer parts and Fujitsu technical support, wherever we install.

1Home estimate

Free. We measure and check the insulation and the location.

2Clear quote

The model, the size and the indicative LogisVert amount, in writing.

3Installation and commissioning

Vacuum, refrigerant, electrical, winter settings.

4Warranty registered

We register the unit with Fujitsu and help you with LogisVert.

18 · Frequently asked questions

What people ask us about multi-zone.

Aquila heats down to -15 °C and comes in 18,000 to 45,000 BTU/h (2 to 5 zones). Aquila XLTH heats down to -26 °C, has a heated base pan and comes in 18,000 to 36,000 BTU/h (2 to 4 zones).

19 · See also

Related collections.

AirGreen × FUJITSU AIRSTAGEFree home estimateWarranty registered for youElite Plus dealerMontreal · Laval · Longueuil · South Shore · North Shore

Sources checked on October 8, 2026

26 sources · show
  1. Fujitsu AIRSTAGE, airstagehvac.com/products/multi
  2. Fujitsu AIRSTAGE, airstagehvac.com/r32-2-3-4rooms/kwas
  3. Fujitsu AIRSTAGE, airstagehvac.com/r32-2-3-4rooms/kwah
  4. Fujitsu, submittal sheet 18KWAS2
  5. Fujitsu, submittal sheet 24KWAS3
  6. Fujitsu, submittal sheet 36KWAS4
  7. Fujitsu, submittal sheet 45KWAS5
  8. Fujitsu, submittal sheet 18KWAH2
  9. Fujitsu, submittal sheet 24KWAH3
  10. Fujitsu, submittal sheet 36KWAH4
  11. Fujitsu, brochure FG8159A
  12. Fujitsu, brochure FG2057B
  13. Fujitsu, brochure FG2057
  14. Fujitsu, product or archive page LEG
  15. Fujitsu AIRSTAGE, document pdf-fcus-pr-2016-fujitsu-36-000-multi-zone-xlth-01
  16. Fujitsu AIRSTAGE, document pdf-fcus-h-series-warranty-r32-202606
  17. ENERGY STAR, certified air-source heat pump list (dataset w7cv-9xjt)
  18. ENERGY STAR, program criteria
  19. Hydro-Québec, LogisVert residential participation guide, version 1.10
  20. Hydro-Québec, residential
  21. Government of Québec, mesure du bruit
  22. Government of Canada, heating cooling heat pump
  23. U.S. eCFR, section 429.16
  24. International Astronomical Union, star and constellation names
  25. airgreen.ca product sheets, read October 8, 2026
  26. AirGreen, “Nos réalisations” projects blog

Amounts shown are estimates; only Hydro-Québec confirms the grant. Manufacturer data is quoted “according to Fujitsu”.

Price on quote. Every installation is different: we give you a free, detailed quote before any commitment.
The FUJITSU AIRSTAGE shop · Multi-zone

Every multi-zone, right below.

Each product sheet gives the outdoor unit, the head combinations offered and the indicative LogisVert amount.

FUJITSUAIRSTAGE