HITACHI airHome 400 Wall-Mounted Heat Pump | 12,000 BTU (115V) - Sale & Installation

• BROCHURE - FRANÇAIS
• BROCHURE - ENGLISH

• WiFi: Optional
• Warranty (Compressor - Parts - Labor): 10-10-0
• Additional Warranty: Possible
• Piping: 1/4 - 3/8
• Voltage: 115 V
• Sound Pressure Level (Outdoor): 51.0 dB(A)
• Sound Pressure Level (Indoor): 29 / 46 dB(A)

The efficient and quiet 115V solution for homes in Montreal , Laval , Longueuil , North Shore and South Shore

At AirGreen, we install the HITACHI airHome 400 – 12,000 BTU (115V) wall-mounted heat pump for homeowners who want a reliable, energy-efficient unit that's easy to power, without the need for heavy electrical work. This 115V version fits perfectly into Quebec homes (condos, plexes, townhouses), while offering excellent four-season comfort, quiet operation, and smart maintenance features that maintain performance over time.

The RAK-EJ12PHAA indoor unit and RAC-EJ12WHAA outdoor unit are ENERGY STAR® certified, use R-32 refrigerant, and boast solid efficiencies ( SEER2 19.5 , HSPF2 9.2 , EER2 12.0 ). Heating remains operational down to approximately -20.5°C (operating range), which covers most of Greater Montreal's winter peaks; in the field, we see consistent heat maintenance down to -21°C depending on the building configuration and envelope.

Key specifications validated by AirGreen & features that make the difference

Performance and acoustics

• Capacity : 12,000 BTU cooling (3,500 to 13,200 BTU modulated) and 13,000 BTU heating (5,500 to 13,700 BTU modulated). Coefficient of Performance (COP) 3.2 @ 47°F , 2.13 @ 5°F .

• Noise : 29 to 46 dB(A) indoors depending on speed; 51 dB(A) outdoors (high). Ideal for bedrooms and open spaces, with a floor level that blends into the atmosphere of the home.

• Operating ranges : cooling -18 to 46°C ; heating -20.5 to 24°C . For Greater Montreal, this comfortably covers the air conditioning season and most days of sustained cold.

Energy & Control

• Vector DC Inverter : Rapid power ramp-up, then fine modulation to maintain temperature with lower consumption. Eco Mode to further lower energy demand.

• GoodSleep : gradual lowering of the fan and adjustment of the setpoint at night for a more stable sleep.

• Wi-Fi (optional) via the SPX-WFG03 adapter and control possible with airCloud GO , energy cost estimates and weekly programming; Alexa/Google voice command compatibility. airPoint H700 wall thermostat (optional SPX-URFG1) for careful local control.

Air quality & sustainability

• FrostWash™ : frost/defrost cycle that “washes” the exchanger and limits air flow loss over time.

• Mold Guard : Internal drying after shutdown, with battery heating, to discourage mold growth and odors.

• PM2.5 filtration with activated carbon + stainless steel pre-filter to capture fine particles and VOCs.

• Rust-proof exterior chassis, anti- corrosion blue-fin fins, fireproof electrical box .
  All these features come from laboratory-tested manufacturer documentation and aim for reduced maintenance with healthier air every day.

Installation data (what really matters on the construction site)

• Power supply : 115 V / 1 / 60 Hz — a practical advantage for many homes; minimum MCA circuit current 18 A and maximum MOP protection 30 A.

• Refrigerant connections : 1/4" – 3/8" (liquid/gas), maximum length 25 m (82 ft) , maximum height difference 15 m (49 ft) ; factory charge 0.80 kg , maximum charge 0.90 kg (R-32).

• Dehumidification : ≈ ​​1.47 L/h (useful in cold mode in heavy weather).

• Generous and compact ventilation levels : 30.71 × 8.74 × 11.02 in (inside) / 29.53 × 11.02 × 22.44 in (outside).

In short : for a condo in Ahuntsic , a 4-1/2 in Longueuil or a small house in Laval , the 12,000 BTU (115V) is well suited to the loads of open rooms of 20 to 40 m² that are properly insulated. We always validate the actual thermal load during the estimate (orientation, glazing, infiltration, floors, etc.).

AirGreen Case Studies (Field, Greater Montreal)

Anjou – 3.5-room west-facing condo
Constraint: existing 120 V outlet, limited panel. We favored the 115 V version , 11 m refrigeration path in 1/4-3/8, discreet gutter on the courtyard side. Result: 24 °C stable upstairs even in heat waves, interior dB(A) measured around 33-36 at low speed; reduced annual maintenance thanks to FrostWash™ . Recommendation to the customer: activate Eco Mode during prolonged absences to limit consumption peaks.

Chomedey (Laval) – 2-story cottage, closed rooms
Goal: mid-season heat without turning the central system back on. The airHome 400 12k covers the ground floor; at -17°C , the machine maintained 21.5°C in the living area, with minimal supplementation of baseboards upstairs. GoodSleep programming in the master bedroom, almost imperceptible noise pollution.

Old Longueuil – century-old plex
Constraint: heritage facade and narrow alley. We installed the outdoor unit on anti-corrosion wall brackets , optimized clearance, and provided a snow hood (accessory) to limit snow drifts. The client opted for airCloud GO (optional Wi-Fi) to track energy costs and plan for nighttime operations.

Grants & Guarantees (What You Need to Know)

• LogisVert (provincial) : $420 advertised for this model (updated July 17, 2025 ). Criteria and amounts may change; during your estimate, we confirm eligibility and the ENERGY STAR® Cold Climate label indicated.

• Manufacturer's Warranty : Our AirGreen sheet mentions 10-10-0 (compressor-parts-labor) . On the Hitachi side, the brochure presents a standard program and extensions (up to 12 years compressor , 10 years parts and up to 2 years labor ) with registration and, if necessary, purchase of extension - useful for owners wanting extended coverage.

AirGreen Installation Best Practices (for Long-Lasting Performance)

• Sizing : We don't oversize. A 12k performs better, consumes less, and defrosts faster than a machine that's too big and short-cycles.

• Routing of connections : compliance with curvature radii and drain slopes ; use of UV channels and butyl tape at penetrations to prevent air or water infiltration.

• Frost management : clear/snow clearances, slope wedge and anti-vibration plate for compressor longevity; snow-hood when exposure to prevailing wind requires it.

• Air quality : we activate FrostWash™ at the end of installation to start with a clean exchanger, then we recommend annual maintenance (cleaning the coil/fan, condensate test, checking connections).

Common mistakes to avoid (feedback)

1. Take 12k out of habit without calculating the actual load (south-facing windows in Longueuil , cathedral floor in Boisbriand , etc.). We carry out a systematic thermal assessment .

2. Forget the dedicated 115V line : even if the power supply is simple, the 30A MOP requires a compliant circuit breaker and wiring.

3. Uncertain condensate discharge : In winter, poor drainage can cause ice to form near the wall. We provide a continuous slope and frost protection if necessary.

4. Ignore smart modes (Eco, GoodSleep): they reduce the bill and improve comfort when they are well programmed.

Why choose AirGreen for this wall-mounted heat pump in Montreal and surrounding areas?

• Team of experienced refrigeration engineers : mastery of R-32 , clean brazing, deep vacuum, methodical commissioning (measured superheat/subcool).

• Transparency : clear prices , no deposit , payment at the end when you are satisfied.

• Service : Realistic installation times, Hitachi parts available, and advice to optimize your HVAC maintenance to extend the life of the unit.

Quick FAQs

Is this enough for a 4.5 in Montreal?
Often yes, if the insulation is adequate and the main room is open. When estimating, we validate the charges per room and may recommend 9k + 12k if two separate areas require independent comfort.

Is 115V a compromise?
No. The modulating machine compensates very well, while simplifying power supply in condos where adding 240 V is expensive. Compliance with the MCA/MOP is essential.

Do you need Wi-Fi?
Optional, but practical for programming , viewing consumption and receiving alerts . The adapter remains invisible once mounted.

Conclusion & Next Step

The HITACHI airHome 400 – 12,000 BTU (115V) is a balanced choice for homes in Greater Montreal: energy savings , silence , easy maintenance and careful air quality . With careful installation and settings adapted to your space, you get stable comfort, summer and winter, at the best cost of use.

Need a price or a 100% free on-site estimate in Montreal , Laval , Longueuil , North Shore or South Shore ? Contact AirGreen : 514-316-2973 or sales@airgreen.ca We analyze your project, confirm applicable grants , and plan a flawless HVAC installation .