514-316-2973
sales@airgreen.ca
The airHome 400 covers more sizes than the other two Hitachi wall series: 9,000 to 36,000 BTU/h, with the range’s only 115 V unit. Hitachi says it heats down to -5°F (-20.5°C), and NEEP certifies every size down to -20°C. Its 24,000 gets $2,100 in LogisVert, the largest amount of our 15 Hitachi wall units.
R-32Indicative LogisVert per size; list read Oct. 14, 2026, amounts recomputed Oct. 28, 2026 from the certificates.
Each product page gives the AHRI number, the certified figures and the LogisVert amount of the size.
Each spec card follows Hitachi’s brochure and the NEEP certificate of its AHRI number, which agree on efficiency and heat at -8.3°C. The maximum at -20°C is the highest output NEEP certifies at that temperature.
ENERGY STAR (US market) without being Cold Climate or Most Efficient; under LogisVert’s 12,000 BTU/h nominal minimum.
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The only 115 V Hitachi wall unit. At maximum, NEEP certifies it at 13,700 BTU/h at 8.3°C (COP 2.85) and 11,700 BTU/h at -8.3°C (COP 2.20).
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The largest LogisVert grant of our 15 Hitachi wall units.
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Not on the ENERGY STAR list (re-checked Oct. 28, 2026): no LogisVert grant.
See the productTap a size: the electrical data follow Hitachi’s brochure and installation manual. The 115 V 12,000 is the only Hitachi wall unit that does without a 208-230 V circuit; the 36,000 calls for a 40 A breaker. We check your panel during the visit.
The technical catalogue sets the starting voltage above 85% of the rated voltage, and imbalance at 3% at most.
According to Hitachi, the compressor is started by the inverter, hence an extremely low starting current.
The Canadian page claims protection against voltage surges up to 420 V and normal operation from 130 to 264 V.
Hitachi also certifies PHAA versions of the 9,000 to 24,000, with the same figures: in those sizes, we sell the RHAA heads, the ones that keep the multi-zone door open. Hitachi does not publish what the other letters of the model number mean.
“Indoor units RAK-DJ-RHAA are compatible with airHome 400 single splits and airHome Multi multi-split systems,” Hitachi writes. Our sizes: 9,000, 12,000, 18,000, 24,000.
“Indoor units RAK-DJ-PHAA are compatible with airHome 400 single splits only.” That is the case for our 12,000 · 115 V and 36,000.
Sold separately, it fits inside the unit. The airCloud Go app runs a weekly schedule, estimates energy cost and answers to Alexa and Google Home.
Hitachi provides for it, but a third-party thermostat cannot run every exclusive function, FrostWash included.
Optional wired wall controller, to run the unit without the remote.
Per the catalogue, up to 13 indoor units on a single wired controller, with cascaded distributors (SPX-WKT4 cables).
Connects the dry contact of a card-key unit, handy for rentals.
Wireless remote of the 9,000 to 24,000, per the airHome 400 technical catalogue.
Tap a size: each column gives the maximum capacity certified by NEEP and the COP at that output. Hitachi’s technical catalogue stops at the 24,000; NEEP also covers the 115 V unit and the 36,000.
NEEP points: 47, 17, 5 and -4°F. A COP of 2 gives 2 kWh of heat for 1 kWh of electricity. NEEP records re-checked Oct. 28, 2026.
Hitachi writes that the airHome 400 keeps the room warm down to -5°F (-20.5°C). First that floor and what NEEP certifies at -20°C, then the nights below that mark, month by month.
Nights: 1981-2010 climate normals, Montréal-Trudeau (ECCC). Certified point: NEEP records by AHRI number, re-checked Oct. 28, 2026.
Nights per month with a low below -20°C
1981-2010 climate normals, Montréal-Trudeau, ECCC. April to November: 0. No Hitachi airHome 400 document mentions a base pan heater: we do not promise one on this series.
For each size: the lowest speed, the highest, and the outdoor unit. According to Hitachi, its wavy-blade fans keep the small sizes at 29 dB(A) in silent mode.
dB(A), Hitachi brochure; “out.”: outdoor unit at high speed. Hitachi states the 29 dB(A) is measured in silent mode on the 9,000 and 12,000. Measured in an anechoic chamber per the technical catalogue (9,000 to 24,000).
Slide the distance between the wall unit and the outdoor unit: each size fades once you pass Hitachi’s published length. The table gives the footprints, width × height × depth.
Maximum line lengths and height differences published by Hitachi (brochures). We measure the real route during the free visit. 36,000 height difference of 30 m: brochure only. Minimum 3 m (9,000, 12,000, 18,000).
| Size | Indoor unit | Outdoor unit | Liquid – gas lines |
|---|---|---|---|
| 9,000 | 780 × 280 × 222 mm · 8 kg | 660 × 530 × 278 mm · 26 kg | 1/4 – 3/8 in. |
| 12,000 | 780 × 280 × 222 mm · 8.5 kg | 750 × 570 × 280 mm · 34 kg | 1/4 – 3/8 in. |
| 12,000 · 115 V | 780 × 280 × 222 mm · 8.5 kg | 750 × 570 × 280 mm · 34 kg | 1/4 – 3/8 in. |
| 18,000 | 950 × 294 × 230 mm · 11 kg | 850 × 800 × 298 mm · 47 kg | 1/4 – 1/2 in. |
| 24,000 | 1,050 × 294 × 255 mm · 14 kg | 950 × 945 × 370 mm · 73.3 kg | 1/4 – 5/8 in. |
| 36,000 | 1,100 × 300 × 260 mm · 15 kg | 950 × 945 × 370 mm · 79.3 kg | 3/8 – 5/8 in. |
Hitachi brochure, width × height × depth and net weight.
Here FrostWash works on the indoor coil. For the outdoor unit, Hitachi lists FrostWash and DuraSpin on the airHome 600 and 800, not on the 400.
Per the Kitasato Research Center tests cited by Hitachi (test no. 2020_0650, test model RAS-X22K, not an airHome 400), FrostWash removes 99% of viruses, 99% of bacteria and 95% of mould.
According to Hitachi, FrostWash helps maintain airflow over the years 3 times better than a unit without it (comparison of 2 identical units).
The coil rises to 50°C. Hitachi notes the function prevents mould without removing what is already there; it can be turned off.
Built-in PM2.5 activated carbon purifying filter, capturing up to 99% of fine particles. A light signals cleaning time; Hitachi publishes no interval for this series.
Dehumidification from the smallest to the largest size, per Hitachi’s brochure.
Per Hitachi’s brochure, up to 30% energy savings over a conventional compressor.
Four sizes are “cold climate” in the ENERGY STAR list (US market): Hydro-Québec pays $120 per 1,000 BTU/h of heat certified at -8°C. The 9,000 is ENERGY STAR without being cold climate, and it is under the 12,000 BTU/h nominal minimum; the 36,000 is not on the ENERGY STAR list.
Math: heat certified at -8°C, in thousands of BTU/h, × $120. Hydro-Québec: list read Oct. 14, 2026, amounts recomputed Oct. 28, 2026 from the certificates. Full LogisVert rules (eligibility, deadlines, documents): our LogisVert page.
A Ville-Marie condo, a terrace, bedrooms: on the island, the airHome 400 is the wall series we have published most. Here is every published place, and three installations in pictures.
Places from the titles of our projects blog articles published as of Oct. 28, 2026: city or borough only. Grouping by territory: ours.
Hitachi writes -5°F, that is -20.5°C. NEEP certifies every size down to -20°C, with a maximum output of 6,000 BTU/h to 19,600 BTU/h depending on the size. Hitachi publishes no “100%” threshold for this series.
Hitachi documents the use, not the letters: RAK-DJ…RHAA heads connect as single-zone or to an airHome Multi, RAK-DJ…PHAA heads as single-zone only. Hitachi publishes no key for the other letters of the model number.
For a room where no 208-230 V circuit is planned. The RAK-EJ12PHAA + RAC-EJ12WHAA runs on 115/1/60, with an 18 A MCA and a 30 A MOP. NEEP certifies it at 8,400 BTU/h at -8.3°C, hence $1,008 in LogisVert, and at most 8,000 BTU/h at -20°C (COP 1.91). We check your panel during the visit.
Its combination (RAK-DJ36PHAA + RAC-DJ36WHAA, AHRI 216411300) is not on the ENERGY STAR list, re-checked Oct. 28, 2026. Since November 26, 2025, LogisVert requires an ENERGY STAR certified unit.
No. The SPX-WFG03 adapter is bought separately and fits inside the unit; it unlocks the airCloud Go app. It is included on the airHome 600 and 800.
Hitachi provides for a third-party 5-wire thermostat. It cannot run every exclusive function of the unit, FrostWash included. The Hitachi SPX-URFG1 wired controller is the other option.
No Hitachi airHome 400 document mentions one, and we do not promise it. Hitachi lists it for the airHome 600 (standard) and the airHome 800 (built in).
Hitachi and AirGreen warranties: explained once for the whole brand, on the HITACHI page.
No question matches. Call us at 514 316-2973.
We measure the room, the line set route and your electrical panel, then write the size, the AHRI number and the indicative LogisVert amount on the quotation.
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.
×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.
