HITACHI airHome 400 Wall-Mounted Heat Pump | 18,000 BTU - Sale & Installation

• BROCHURE - FRANÇAIS
• BROCHURE - ENGLISH

• WiFi: Optional
• Warranty (Compressor - Parts - Labor): 10-10-0
• Additional Warranty: Possible
• Piping: 1/4 - 1/2
• Voltage: 220 V
• Sound Pressure Level (Outdoor): 52.0 dB(A)
• Sound Pressure Level (Indoor): 35 / 48 dB(A)

Effortless comfort for our Montreal winters and summers

At AirGreen, we recommend the HITACHI airHome 400 – 18,000 BTU wall-mounted heat pump to homeowners who want a reliable, economical and discreet HVAC solution for a condo, urban cottage or single-family home in Montreal, Laval, Longueuil, North Shore, South Shore . Its SEER2 19.5 and HSPF2 10.5 efficiency make it a serious machine for four-season comfort, while keeping energy bills tight. It uses R-32 refrigerant , which is more efficient and better optimized for efficiency.

Why this 18,000 BTU stands out in Greater Montreal
We have been installing the airHome 400 for several seasons. In the field, it stands out for:

• guaranteed heating down to -21°C , useful during the frequent cold spells on the island and on the North Shore ;

• 18,000 BTU of cooling power suitable for open floors typical of renovated plexes and cottages;

• an interior noise level of 35 to 48 dB(A) , pleasant for living spaces and bedrooms;

• compact dimensions (indoor unit: 37.40 x 9.06 x 11.57 in; outdoor unit: 33.46 x 11.73 x 31.50 in) that facilitate architectural integration in dense sectors;

• very common 1/4 – 1/2 piping , simplifying replacements or additions of zones;

• Wi-Fi connectivity (optional) via adapter to program and monitor consumption.

We also like its practical technologies: Vector DC Inverter (stabilizes the temperature and helps cut consumption), Eco Mode , GoodSleep (night profile), FrostWash™ (self-cleaning of the exchanger), Mold Guard (internal drying and heating of the coil to limit odors), and PM2.5 activated carbon filter for better air quality. These elements reduce clogging, maintain airflow and extend performance.

HVAC installation: our proven method (Montreal, Laval, Longueuil, North Shore, South Shore)

On-site assessment

• Simplified load calculation and verification of thermal behavior (sunshine, air infiltration, insulation).

• Choice of interior location : we favor a clear wall with blowing towards the main space and reliable gravity condensate flow .

• External positioning : clearance from fences/neighbors, anchoring on a raised base for snow removal, orientation of refrigeration lines protected from impacts.

Installation and finishing

• Nitrogen brazing and deep vacuum drawing.

• Leak test and R-32 charge according to effective lengths.

• Sound level management: silent blocks and fan orientation to limit reverberation on brick walls.

• Guided commissioning : programming the remote control, creating eco scenarios and usage tips.

Recommended HVAC maintenance

• Cleaning of batteries and crankcase with products suitable for R-32.

• Light disinfection to limit biofilms.

• Periodic inspection of condensate drains and PM2.5 filter .

• Checking electrical parameters (MCA/MOP) and connection tightness after the first seasonal cycle.

Performance & essential technical data

• Cooling capacity : 18,000 BTU

• Nominal heating capacity : 18,500 BTU

• SEER2 : 19.5

• HSPF2 : 10.5

• EER2 : 12.0

• Voltage : 220V (208-230/1/60)

• Exterior noise level : 52 dB(A)

• Refrigerant : R-32

• ENERGY STAR® : Yes (Cold Climate: No)

• Wi-Fi Compatibility : Optional

• AHRI Number : 216759657

• Models : Indoor RAK-DJ18RHAA / Outdoor RAC-DJ18WHAA
  These values ​​align with the airHome 400 technical data sheet and confirm a very efficient air conditioning profile with robust intermediate heating for our urban climate.

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Features that make a difference in real life

Constant comfort without consumption peaks

The Vector DC Inverter avoids harsh on/off cycles. The result: fewer temperature fluctuations in the open spaces typical of Montreal duplexes, and more even power consumption during hot days.

Cleaner air

The PM2.5 activated carbon filter and FrostWash™ reduce dust and oil buildup on the internal coil, maintaining airflow and reducing compressor strain.

Rain, snow and salt

The outdoor unit has anti-corrosion coated fins and a rust-proof painted casing . In highly exposed areas (salted alleys, river banks), we offer the “snow-hood” accessory and optimized clearances to reduce snow accumulation.

Examples of AirGreen installations

• Rosemont–La Petite-Patrie (brick plex, 1,200 sq. ft.) : airHome 400 18,000 BTU located on the courtyard side, lines camouflaged in painted moldings; imperceptible noise level in the living room during TV evenings.

• Laval-des-Rapides (1980s house, semi-buried basement) : replacement of an old R-410A wall unit with the airHome 400 with existing 1/4-1/2 piping ; measured gain of approximately 25–30% on summer consumption compared to the previous unit.

• Boucherville (South Shore, open plan) : installation at the top of the stairs, through diffusion towards the kitchen/living room; customer satisfied with the thermal stability at night with the GoodSleep mode.

Common mistakes to avoid

• Undersize to “save money”: A 12,000 BTU on an open 1,100–1,300 sq ft will run at maximum and be noisier. The 18,000 BTU provides a useful reserve.

• Poor condensate management : a drain that is too flat creates overflows. We ensure a slope and, if necessary, a lifting pump .

• Install too low outside : in snowy areas, the base must be raised to keep the exchanger free and facilitate defrosting.

• Skip maintenance : Without periodic cleaning, flow rate drops and consumption increases. Annual HVAC maintenance is recommended.

Guarantees & subsidies

• AirGreen Basic Warranty (Device) : 10 years compressor – 10 years parts – 0 labor (extended labor warranty options available).

• LogisVert Program : estimated provincial grant of $1,596 for this configuration, subject to eligibility and program availability.
  We confirm eligibility during the estimate and prepare, if necessary, the file for Montreal, Laval, Longueuil, North Shore, South Shore .

Express FAQ
Is the airHome 400 “extreme cold”?
It heats down to -21°C . For very cold weather needs, we can recommend a Cold Climate heat pump as an alternative or as a supplement .

Is Wi-Fi included?
Optional via internal adapter. Useful for scheduling and viewing consumption.

What maintenance should be planned?
Filter/evaporator cleaning, drain check, fitting inspection and gentle washing of the outdoor unit. We offer maintenance plans .

Why choose AirGreen?

• Team of experienced refrigeration engineers , fast and careful interventions.

• Transparent prices before work, no deposit: you pay at the end when you are satisfied.

• Local expertise: hundreds of HVAC installations in Montreal, Laval, Longueuil, North Shore, South Shore .

Call to action
Ready to upgrade to an efficient and quiet wall-mounted heat pump ? Contact AirGreen for a 100% free on-site estimate and a clear quote for the HITACHI airHome 400 – 18,000 BTU : 514-316-2973 or sales@airgreen.ca .