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HITACHI COOLING & HEATING · airHome Ducted · RAD-GJThe HITACHI space at AirGreenThe family’s hidden head, and the only one that sets the whole system’s certificate.
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Free in-home estimate5 sizes · 7,000 to 24,000 BTU/h
HITACHI airHome Ducted · updated October 28, 2026

HITACHI ducted unit: the only head that changes the system’s certificate, and the one that can wipe out the LogisVert grant

Wall head, mini-cassette, console: our product pages tie them all to the system’s “all non-ducted” certificate. Add a single RAD-GJ ducted head and the system moves to another AHRI number, “mixed” or “all ducted”. On the RAM-G36N4HAA, the LogisVert grant drops by $50 or $100. On the RAM-G42N5HAA, it falls to $0. On the RAM-G24N3HAA, nothing moves: $1,920.

See the effect on my systemBook my free estimate
HITACHIairHome Multi

LogisVert by the heads connected

RAM-G18N2HAA$745 → $745 · $745RAM-G24N3HAA$1,920 → $1,920 · $1,920RAM-G36N4HAA$1,250 → $1,200 · $1,150RAM-G42N5HAA$1,500 → $0 · $0

No ducted head → mixed · all ducted. LogisVert: list read Oct. 14, 2026, amounts recomputed Oct. 28, 2026 from the certificates. Hydro-Québec confirms eligibility and the amount when it processes the application.

3certificates per outdoor unit
$0LogisVert on a RAM-G42N5HAA once a ducted head is connected
150 Paof static pressure for the 18,000 and 24,000
235 mmtall for the 7,000 to 12,000 sizes
The HITACHI shop · RAD-GJ ducted units

The five ducted heads, right below.

Each product page carries Hitachi’s documentation. The certificate depends on the other heads in the system: it is written in your quotation.

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01 · Certificates

One outdoor unit, three certificates. The ducted head picks which one.

Each RAM-G is certified three times: all non-ducted, mixed, all ducted. Pick the outdoor unit and the heads in the system: the card shows the AHRI number, the ENERGY STAR status and the LogisVert amount that apply.

Outdoor unit
Heads in the system
Ducted head size
Certificate that applies (AHRI)217512354
Indicative LogisVert, per system$0

Not on the ENERGY STAR list (US market): since November 26, 2025, no LogisVert grant.

$1,500 less than the same system with no ducted head.

ENERGY STARNot on the ENERGY STAR list (US market)
ENERGY STAR ID—
SEER220.5
EER211.25
HSPF2, Region IV9.1
Certified capacity at -8.3°C30,600 BTU/h
Max. capacity at -20°C24,500 BTU/h
This outdoor unit’s three certificates
No ducted head
Ducted and other heads
Ducted heads only

Hitachi publishes no combination table for this outdoor unit: we confirm each combination with the distributor.

NEEP certificates (“All Non-Ducted”, “Mix of Ducted and Non-Ducted” and “All Ducted” configurations), ENERGY STAR list (US market for airHome units), read Oct. 14, 2026 and re-checked Oct. 28, 2026; LogisVert: list read Oct. 14, 2026, amounts recomputed Oct. 28, 2026 from the certificates. Hitachi publishes no mixing rule beyond “Mix & match up to 5 types of indoor units”. Full LogisVert rules (eligibility, deadlines, documents): our LogisVert page.

02 · LogisVert

Why the grant drops: Hydro-Québec pays per 1,000 BTU/h at -8°C.

LogisVert pays $50 per 1,000 BTU/h of capacity certified at -8°C, or $120 for an ENERGY STAR Cold Climate unit. The RAM-G36N4HAA all-ducted certificate states 23,000 BTU/h instead of 25,000: $100 less. The RAM-G42N5HAA ducted ones are not on the ENERGY STAR list (US market): no grant.

RAM-G18N2HAA · $50 per 1,000 BTU/h

No ducted head14,900 BTU/h · $745
Ducted and other heads14,900 BTU/h · $745
Ducted heads only14,900 BTU/h · $745

RAM-G24N3HAA · $120 per 1,000 BTU/h: ENERGY STAR Cold Climate (US market)

No ducted head16,000 BTU/h · $1,920
Ducted and other heads16,000 BTU/h · $1,920
Ducted heads only16,000 BTU/h · $1,920

RAM-G36N4HAA · $50 per 1,000 BTU/h

No ducted head25,000 BTU/h · $1,250
Ducted and other heads24,000 BTU/h · $1,200
Ducted heads only23,000 BTU/h · $1,150

RAM-G42N5HAA · $50 per 1,000 BTU/h

No ducted head30,000 BTU/h · $1,500
Ducted and other heads30,600 BTU/h · $0
Ducted heads only31,400 BTU/h · $0

Certified capacities at -8.3°C (17°F) per NEEP, by AHRI number; Hydro-Québec writes -8°C. For the ducted RAM-G42N5HAA, Hitachi’s brochure prints 29,000 BTU/h at 17°F; the certificates give 31,400 BTU/h (all ducted) and 30,600 BTU/h (mixed). The certified SEER2 drops too: 18 on all four all-ducted combinations, against 22 or 23 with no ducted head. Red bars: configurations with a ducted head; $0: combinations not on the ENERGY STAR list (US market).

Worth knowing before choosing a ducted head

No RAM-G42N5HAA combination with a ducted head (all ducted or mixed) is on the ENERGY STAR list (US market), so there is no LogisVert grant once a ducted head is connected. On the RAM-G36N4HAA, a ducted head takes the grant from $1,250 to $1,200 (mixed) or $1,150 (all ducted). On the RAM-G18N2HAA and the RAM-G24N3HAA, the amount does not move.

03 · Two bodies

Up to 12,000 or from 18,000: two different machines under one name.

The three small sizes share a 235 mm tall body and 70 Pa of static pressure. The two large ones move to 270 mm, 150 Pa and a 180 W motor. Tap a group: the drawing is to scale.

Sizes7,000 · 9,000 · 12,000
Height × width × depth235 × 750 × 400 mm
Net / gross weight16 / 18 kg
External static pressure70 Pa (0.28 in. w.c.)
Settings printed in the guide70 Pa
Top airflow, cooling / heating300 / 309 CFM
Fan motor / current20 W / 0.54 A
Liquid / gas lines1/4 / 3/8 in.
On a 3/8 in. portDirect connection
Condensate drain16 mm
Sound power57 dB(A)

Drawn to scale from Hitachi’s brochure: the selected body is solid, the other dotted. For the two large sizes, the technical guide prints a 700 mm depth instead of 720: the red line marks the gap. Adaptors ship with the outdoor unit (guide, section 13.1).

04 · Spec plates

Five plates, with the capacity range from Hitachi’s guide.

The technical guide gives each size a rated value and a capacity range, minimum and maximum, in cooling and heating. It rates the 24,000 at 27,300 BTU/h in heating, with a range that reaches 30,690 BTU/h.

RAD-GJ07QHAADucted · 7,000 BTU/h

Ducted · 7,000 BTU/h

pump included
Nominal capacity7,000 BTU/h
Cooling, guide (min. → max.)7,000 (3,050 → 8,500)
Heating, guide (min. → max.)9,000 (3,050 → 10,900)
Body235 mm tall · 70 Pa
Outdoor units, Hitachi tableG18 · G24 · G36
See the product
RAD-GJ09QHAADucted · 9,000 BTU/h

Ducted · 9,000 BTU/h

pump included
Nominal capacity9,000 BTU/h
Cooling, guide (min. → max.)9,000 (3,050 → 10,200)
Heating, guide (min. → max.)12,000 (3,050 → 18,000)
Body235 mm tall · 70 Pa
Outdoor units, Hitachi tableG18 · G24 · G36
See the product
RAD-GJ12QHAADucted · 12,000 BTU/h

Ducted · 12,000 BTU/h

pump included
Nominal capacity12,000 BTU/h
Cooling, guide (min. → max.)12,000 (3,050 → 13,650)
Heating, guide (min. → max.)16,400 (3,050 → 22,500)
Body235 mm tall · 70 Pa
Outdoor units, Hitachi tableG18 · G24 · G36
See the product
RAD-GJ18QHAADucted · 18,000 BTU/h

Ducted · 18,000 BTU/h

pump included
Nominal capacity18,000 BTU/h
Cooling, guide (min. → max.)18,000 (4,100 → 19,800)
Heating, guide (min. → max.)20,500 (4,100 → 23,200)
Body270 mm tall · 150 Pa
Outdoor units, Hitachi tableG24 · G36
See the product
RAD-GJ24QHAADucted · 24,000 BTU/h

Ducted · 24,000 BTU/h

Hitachi table: RAM-G36
Nominal capacity24,000 BTU/h
Cooling, guide (min. → max.)24,000 (4,100 → 25,600)
Heating, guide (min. → max.)27,300 (4,100 → 30,690)
Body270 mm tall · 150 Pa
Outdoor units, Hitachi tableG36
See the product
05 · Sound

Figures measured at an open grille, not at the end of a duct.

Hitachi measures the ducted head with no duct, in an anechoic chamber. In your home, the sound also depends on the ductwork and grilles: read these values as a comparison between sizes.

SizesModePublished values, highest to lowestSound power
7,000 to 12,000Cooling41 · 37 · 33 · 30 dB(A)57 dB(A)
7,000 to 12,000Heating42 · 38 · 34 · 30 dB(A)57 dB(A)
18,000 and 24,000Cooling39 · 35 · 32 · 29 dB(A)53 dB(A)
18,000 and 24,000Heating40 · 35 · 32 · 29 dB(A)53 dB(A)

airHome Multi brochure (values) and technical guide (sound power, test conditions). Hitachi prints four values for five fan speeds; how they map to the speeds is not stated.

“2-5/8ft (0.8m) beneath indoor height center” · “3-9/32ft (1m) from Discharge grille” · “anechoic chamber”
Test conditions in Hitachi’s technical guide: a grille blowing into open air, with no duct.
The big ones are the quiet ones

On paper, the 18,000 and the 24,000 make less noise than the small sizes: 53 dB(A) of sound power against 57, and 29 dB(A) against 30 at the lowest value. Hitachi prints these figures in both the brochure and the guide.

06 · In your home

What it takes to house it, and what Hitachi publishes for upkeep.

Hitachi presents it as an invisible unit that preserves your home’s interior design. It still needs a space at least as tall as the body, plus clearances that Hitachi does not publish.

HeightA 235 or 270 mm body

The body is 235 mm tall from 7,000 to 12,000 BTU/h, and 270 mm for the 18,000 and the 24,000. Hitachi publishes neither the clearances nor the mounting orientation: we measure the available space during the visit.

Ducts70 or 150 Pa of static pressure

Through its ducts, a ducted head can blow into one room or into neighbouring rooms, within its static pressure: 70 Pa for the small sizes, 150 Pa for the large ones. We size the ducts to match.

WaterAn included pump

According to Hitachi, the condensate pump is included on all five sizes: 850 mm maximum height, 115 mm lift. We keep access to the body for the pump and the filter.

ItemWhat Hitachi publishesNot published by Hitachi
Condensate pumpIncluded on all five sizes: 850 mm maximum height, 115 mm lift. 16 mm drain (7,000 to 12,000) or 32 mm (18,000 and 24,000).—
Filter“Normal Pre-Filter”: a standard pre-filter.size, access, cleaning interval
Static pressure70 Pa or 150 Pa depending on size.setting method, fan curves
Ducts—connection sizes, return air
RemoteRC-AGU1EA0N for all five sizes.supplied or optional
Wi-FiairCloud Go SPX-WFA01 adapter, optional.—

airHome Multi brochure, English data sheet and technical guide. The ducted head’s installation manual could not be obtained on Oct. 14, 2026.

Hitachi and AirGreen warranties: explained once for the whole brand, on the HITACHI page. Remotes and parts: Hitachi parts and accessories

07 · Frequently asked questions

Your questions about the Hitachi ducted head.

Because the system changes certificate. Hydro-Québec pays on the capacity certified at -8°C: 25,000 BTU/h with no ducted head, 24,000 mixed and 23,000 all ducted, hence $1,250, $1,200 or $1,150.

AirGreen · Air conditioning & heating

A ducted head, yes, but on the right outdoor unit and with the right certificate.

During the visit, we choose the location and plan the ducts, then compare configurations: the quotation shows the AHRI number that applies and the indicative LogisVert amount, before you sign.

Book my free estimate514 316-2973

Hydro-Québec never solicits anyone by phone or door to door for LogisVert. If someone calls “on behalf of Hydro-Québec” to sell you a heat pump, hang up.

Monday to Thursday 8 a.m. to 6 p.m. · Friday 8 a.m. to 4 p.m.

RBQ 5645-9605-01Subclasses 15.8, 15.10 and 16
Free estimateAt home, no obligation
6 years all-inclusiveParts, labour and travel, installations since Oct. 5, 2026
Showroom1370 Joliot-Curie Street, Suite 712, Boucherville
AirGreenHITACHI
08 · The HITACHI space

The other heads, and the ducted systems.

RAI-GJ mini-cassettes
RAI-GJ mini-cassettesRecessed in the ceiling: our product pages give it the “all non-ducted” certificate.
RAF-FJ floor consoles
RAF-FJ floor consolesLow on the wall, no pump: 22 dB(A) at the lowest speed, the lowest figure in the family.
airHome Multi multi-zone
airHome Multi multi-zoneThe 12-certificate matrix, and outdoor units that heat down to -20°C according to Hitachi.
3-zone system
3-zone systemThree rooms: the RAM-G24N3HAA keeps $1,920 there, ducted or not.
airCore 700 central
airCore 700 centralA whole house on ducts: one central system, one indoor unit.
All of HITACHI
All of HITACHIThe full Hitachi range at AirGreen.

Sources, with the date we read them

  1. Hitachi (Johnson Controls-Hitachi), airHome Multi brochure “Multi-Split Inverter Heat Pump System”, English, footer “February 2025_CA”, read Oct. 14, 2026.
  2. Hitachi, airHome Multi brochure, French version, footer “December 2024_CA”, read Oct. 14, 2026.
  3. Hitachi, English airHome Multi data sheet (cover code RAM-G-N-HAA, February 2025), distributed by AirGreen, read Oct. 14, 2026.
  4. Hitachi, airHome Multi technical guide “TC_ NA airHome Multi-2024 (EN) - 00”, 183 pages: head data sheets, combination tables 3.5 to 3.7, adaptors 13.1, read Oct. 14, 2026; tables 3.5 to 3.7 re-read in full Oct. 28, 2026.
  5. Hitachi, documentation portal “Manuals and Technical Catalogs - Residential AC” (documentation.hitachiaircon.com), read Oct. 14, 2026.
  6. NEEP, Cold Climate Air Source Heat Pump List (ashp.neep.org), records by AHRI number, read Oct. 14, 2026 and re-checked Oct. 28, 2026.
  7. ENERGY STAR, Certified Air-Source Heat Pumps (dataset w7cv-9xjt), read Oct. 14, 2026 and re-checked Oct. 28, 2026. For airHome units, the “markets” field lists the United States.
  8. Hydro-Québec, LogisVert eligible heat pump search tool (homeowner list), read Oct. 14, 2026; amounts recomputed Oct. 28, 2026 from the ENERGY STAR and NEEP certificates, at the rate of LogisVert guide v1.10.
  9. Hydro-Québec, residential LogisVert participant’s guide, version 1.10, September 15, 2026.
  10. Hitachi Cooling & Heating Canada, “Warranties & Training” page (mini-split systems), read Oct. 14, 2026.
  11. airgreen.ca product pages (metafields), read Oct. 14, 2026.

LogisVert amounts are indicative: the invoice must show the AHRI or ENERGY STAR number, and Hydro-Québec confirms eligibility and the amount when it processes the claim. Price on quotation.