HITACHI airHome 400 Wall-Mounted Heat Pump | 9,000 BTU - Sale & Installation

• BROCHURE - FRANÇAIS
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• WiFi: Optional
• Warranty (Compressor - Parts - Labor): 10-10-0
• Additional Warranty: Possible
• Piping: 1/4 - 3/8
• Voltage: 220 V
• Sound Pressure Level (Outdoor): 51.0 dB(A)
• Sound Pressure Level (Indoor): 29 / 44 dB(A)

Simple and reliable comfort for homes in Montreal and the surrounding area

At AirGreen , we install and maintain HVAC systems that must perform in the true climate of Greater Montreal. The HITACHI airHome 400 – 9,000 BTU is a compact wall-mounted heat pump , designed to ensure stable comfort all year round, with a controlled electrical footprint and easy maintenance. It is ideal for condos , apartments , plexes and small houses in Montreal , Laval , Longueuil , on the North Shore and the South Shore .

Why the airHome 400 (9,000 BTU) makes sense here

• Seasonal efficiency : SEER2 20.0 in cooling, HSPF2 9.2 (Region 4) in heating – an attractive ratio for our humid summers and cool shoulder seasons ( ENERGY STAR® ).

• Realistic winter performance : heating guaranteed down to -21°C , ideal for the majority of light residential needs in Greater Montreal, with intelligent management of the DC Inverter compressor to limit consumption peaks.

• Noticeable silence : from 29 dB(A) indoors (silent mode), comparable to the whisper of a library; 51 dB(A) outdoors.

• Healthier air : FrostWash™ technology (self-cleaning of the exchanger), Mold Guard function (internal drying/anti-mold) and PM2.5 activated carbon filter – useful against fine particles and odors.

• Optional connectivity : Wi-Fi (internal adapter) and airPoint H700 wall thermostat for weekly scheduling, viewing, and estimating energy costs.

  Key specifications useful for your project

  Essential technical data

  • Capacity : 9,000 BTU (nominal cooling); 10,000 BTU (nominal heating).

  • Modulation ranges : 4,000 ~ 10,500 BTU/h (cooling); 4,000 ~ 12,000 BTU/h (heating).

  • Efficiency : SEER2 20.0 , EER2 13.0 , HSPF2 9.2 / 7.5 (Region 4 / Region 5).

  • Refrigerant : R-32 (factory charge 0.70 kg).

  • Acoustics : 29 to 44 dB(A) indoors depending on speed; 51 dB(A) outdoors (high).

  • Power supply : 208-230 V / 1 ph / 60 Hz (MCA 8 A, MOP 15 A).

  • Dimensions :

    • RAK-DJ09RHAA indoor unit : 780 × 280 × 222 mm (W×H×D).

    • RAC-DJ09WHAA outdoor unit : 660 × 530 × 278 mm.

  • Piping : 1/4" – 3/8" (liquid/gas), 5/8" drain ; max total length 25 m , drop 15 m .

  • Room noise level : airflows 110 to 310 CFM depending on mode/speed.

  • Useful numbers : AHRI 216759655 , exterior SKU RAC-DJ09WHAA , interior RAK-DJ09RHAA .

  • Certifications : ENERGY STAR® (not “cold climate”).

  • AirGreen Warranty : 10-10-0 (compressor-parts-labor) according to the AirGreen product sheet; extended warranty possible.

    Good to know: for customers looking for bonuses, the model is eligible for the LogisVert program (indicative amount $325 as of July 17, 2025, subject to government criteria and building eligibility).

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    What this means for you on a daily basis

    • Continuous comfort : the Vector DC Inverter algorithm starts quickly to reach the setpoint, then stabilizes at low speed; the “yo-yo” effect is avoided and electricity is saved.

    • More peaceful sleep : GoodSleep mode (gradual noise reduction and subtle temperature adjustment at night).

    • Controlled humidity : dehumidification up to 1.1 L/h on the 9 k, ideal during Quebec heat waves.

    • Internal hygiene : FrostWash™ traps and removes dust and oils from the exchanger; Mold Guard dries and heats the coil after shutdown to limit odors upon restart.

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    Examples of AirGreen installations in Greater Montreal

    Condo in Griffintown (Montreal) – 620 sq ft, south facing

    Aesthetic constraints (very strict trustee), glass facade, limited drilling point. We positioned the indoor unit above a patio door, routed the drain to the plumbing column, then installed the outdoor unit on anti-vibration wall brackets on the interior courtyard side (compact template 660 mm wide). Result: 29–33 dB(A) in the evening, consumption measured on meter-socket: 340–420 W in maintenance (summer). Customer feedback: comfort without drafts, moderate hydro bill.

    Triplex in Rosemont – ground floor 2 bedrooms + office

    The client was concerned about the installation being visible in the alley. We used a discreet conduit route under the rear soffit, brick-colored UV paint , and a controlled drain slope (≥ 2%). The H700 wall thermostat allowed for weekly programming : eco mode during the day, restart before returning home. Results after 1 month: humidity stabilized (45–50%), outside noise acceptable for the neighbors.

    Single-family home in Boucherville – guest room + office

    Main need: additional heating between seasons and cool nights. We validated the outdoor location sheltered from snowdrifts and provided clearance for thawing . The airHome 400 keeps the room at 21–22 °C without starting an electric booster, even at -10 °C .

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    Good installation practices we apply

    • Sizing : the 9,000 BTU is suitable for rooms of 12 to 30 m² that are well insulated (depending on solar gain and waterproofing). We validate on site: orientation , glazing , infiltration , internal loads .

    • Electrical : 230V dedicated circuit, 15A circuit breaker, external disconnect breaker within easy reach; conductors and grounding according to Code .

    • Refrigeration : flared crimping controlled to exact torque , nitrogen during brazing if required, vacuum < 500 microns , leak test, additional charge if lengths > standard.

    • Condensate management : continuous slope towards the outside/injection, condensate trap if necessary, prevention of freezing in winter.

    • Acoustics : anti-vibration pads, blow-out clearances, avoid direct reflections on the headboard or a workstation.

    • Aesthetics : UV duct covers, paint on ducts and consoles to blend in with brick or cladding.

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    Common mistakes to avoid (feedback from the field)

    1. Undersize a very sunny room: the 9k can struggle if the glazed surface is large and unprotected.

    2. Place the outdoor unit in a basin (risk of ice and amplified noise). We prioritize a ventilated wall or a raised slab .

    3. Interior drain without slope : odors, backup, stains.

    4. Drillings too low on the north wall: ice accumulation and service constraints.

    5. Ignore programming : a well-set GoodSleep curve and Eco mode significantly reduce consumption.

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       Frequently Asked Questions (short version)

       Is 9,000 BTU enough for a 3 1/2 in Montreal?
       Often yes if the envelope is correct. We confirm during the free on-site estimate .

       And in winter at -25°C?
       The model provides heating down to -21°C . Beyond this, efficiency decreases; support (baseboards, existing central unit) may be useful depending on the building.

       Is Wi-Fi included?
       No, optional module . We can integrate it during installation, as well as the H700 thermostat .

       Recommended maintenance?
       Monthly filter cleaning, gentle evaporator wash , annual AirGreen inspection (refrigeration/electrical checks, gentle disinfection). FrostWash™ and Mold Guard functions help between services.

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       Why choose AirGreen?

       • Team of certified refrigeration engineers accustomed to the realities of Montreal , Laval , Longueuil , North Shore , South Shore .

       • Transparent prices : we issue a clear final quote before work begins.

       • No advance : payment at the end , once the installation is validated and functional.

       • After-sales service : availability of common parts, rapid diagnosis, and warranty in accordance with the AirGreen product sheet.

       • Grant support : assistance with LogisVert eligibility and advice to optimize your application.

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       Quick Sheet (for your notes)

       • Product : HITACHI airHome 400 9,000 BTU, R-32 , SEER2 20 , HSPF2 9.2 , -21°C heating , Wi-Fi optional , 1/4–3/8 piping , 220V , interior 780×280×222 mm , exterior 660×530×278 mm , AHRI 216759655 .

       • Ideal for : rooms of 12–30 m², condos and small rental units, home offices.

       • Advantages : silence, FrostWash™ self-cleaning, Mold Guard , PM2.5 filter , programming possible via Wi-Fi / thermostat.

       Ready to take action?

       Need an all-inclusive price and an installation plan tailored to your home in Montreal , Laval , Longueuil , North Shore or South Shore ? Contact AirGreen : an advisor will schedule a 100% free on-site estimate , check the location, power supply and pipe length, then send you a final quote with no surprises .

       Phone : 514-316-2973 • Email : sales@airgreen.ca