HITACHI airHome Multi 2-Head Wall-Mounted Heat Pump | 36,000 BTU Compressor

• BROCHURE FRANÇAIS
• BROCHURE ENGLISH

• WiFi: Optional
• Warranty (Compressor - Parts - Labor): 10-10-0 years
• Additional Warranty (10-10-10): Possible
• Voltage: 220 V
• Sound Pressure Level (Outdoor): 56.0 dB(A)

Designed for apartments and houses in Greater Montreal, the 2-head solution that does it all, all year round

Why this HITACHI “airHome Multi” has become our sure value in residential HVAC in Montreal , Laval , Longueuil , North Shore and South Shore

At AirGreen, we recommend the HITACHI airHome Multi 2-Head Wall-Mounted Heat Pump ( RAM-G36N4HAA outdoor compressor, 36,000 BTU) to those who want to cool and heat two zones with a single compressor, while maintaining independent room-by-room control. The multi-split system allows you to adjust the temperature, fan speed, and schedules of each indoor head independently; you can turn off one zone and keep the other running to save money. It's a flexible, high-performance configuration, and particularly suitable for open-concept plans + bedroom, duplexes with a living area + mezzanine, or dual-aspect condos.

What You Actually Get (and Why It Matters in Winter as Well as Summer)

Performance and operating range

• Reliable heating down to -20°C : the airHome Multi range maintains continuous heating in cold weather—a major asset for our Montreal winters.

• Seasonal Efficiency : SEER2 up to 23.0 for cooling and HSPF2 up to 9.3 (Region 4), signatures of an energy-efficient system that reduces consumption year-round.

• R-32 refrigerant : more efficient, with reduced charges and better overall performance.

• Outdoor noise level : approximately 56 dB(A) for the G36 group — discreet in an urban courtyard.
  These characteristics from the technical sheet ensure stable comfort and controlled costs in the Quebec climate.

Indoor air quality and cleanliness of exchangers

• FrostWash : exclusive “freeze-thaw-dry” cycle that sanitizes the battery and maintains airflow over time.

• Mold Guard : Automatic drying of internal components after cool/dry modes to limit odors and mold.

• PM2.5 & ViroSense S filters : retain fine particles and inhibit biological agents — useful for sensitive families and homes along roads.

Intelligence and security

• Motion detection ( Smart Eco / Auto-Off ): automatic lowering or stopping of the head when the room is empty.

• R-32 refrigerant leak sensor integrated on indoor units: visual/audible alert in case of anomaly.

• Remote control via airCloud Go ( SPX-WFA01 Wi-Fi adapter, optional) to program, monitor consumption and optimize your time slots.

Interior head configurations (mix & match, 2 zones today, upgradeable later)

With the RAM-G36N4HAA , you can choose your two heads and keep the possibility of evolving to more zones if your project grows. Common combinations for 2 rooms: 7 + 9 , 9 + 12 , 12 + 18 , 9 + 18 , 12 + 24 , etc. Formats:

• airHome 400 or 650 wall-mounted units (7k to 24k BTU): quick installation, discreet design, low noise level (up to 27–29 dB(A) depending on model), motion sensor available on 650.

• 22" x 22" Mini-Cassette (7k to 20.5k BTU): 4-way for even distribution — perfect for open areas.

• Ducted (7k to 24k BTU): Total invisibility for projects with discreet grilles.

• Floor Console (7k to 18k BTU): ideal as a replacement for an old window unit.
  We adjust each head ( RAK-DJ/GJ… , RAI-GJ… , RAD-GJ… , RAF-FJ… ) to the actual thermal load of your rooms (surface, glazing, orientation, infiltration).

Key Specifications — RAM-G36N4HAA Outdoor Compressor

• Type : multi-split, 2 zones (expandable up to 4 depending on the range).

• Power supply : 208–230 V / 1 Ph / 60 Hz .

• Operating range : cold 14 to 115°F (−10 to +46°C); hot −4 to 75°F (−20 to +24°C).

• Refrigeration network : R-32 , generous permissible lengths for complex routes.

• External dimensions (W×D×H): approx. 33.5" × 11.7" × 31.5" .
  This data ensures reliable design in real buildings: longer conduits, slopes, and flat roof installations typical of Montreal's residential stock.

Case Study — Renovated Duplex in Rosemont–La Petite-Patrie (Montreal)

Context : owner occupying a duplex, open-plan ground floor (living room-kitchen ~38 m²) + master bedroom (~14 m²). Need: efficient cooling in summer and mid-season heating supplement without starting the boiler.

AirGreen Design :

• 18k BTU head for the open area (airHome 650 wall-mounted, occupancy sensor), 9k BTU head for the bedroom (airHome 400, silent night mode).

• Optimization of refrigeration line lengths, roof clearances respected, condensate evacuation via hidden column.

• Programming : automatic lowering during the day (living room head), gentle maintenance at night (bedroom head).
  Result : drop in summer electricity consumption vs. old window air conditioners and consistent comfort without drafts. In winter, the heat pump covers the off-season; in very cold weather, the boiler takes over. The user controls everything remotely via airCloud Go .

What to know before buying (mistakes to avoid)

1. Undersize the main head of an open area of ​​more than 30 m²: for heating, a 9 k may be sufficient in summer, but be too low at -10 °C. We always validate the thermal load .

2. Split 50/50 “by instinct” : it is better to increase the head of the open area and keep a smaller head for the sleeping area.

3. Forget about exterior acoustic discretion : even if the G36 displays around 56 dB(A), the location (rear wall vs. interior courtyard) changes the sound perception .

4. Neglecting condensate drainage on high/roof installations: slope, access hatch and service point must be planned from the submission.

5. Skip connectivity : The airCloud Go Wi-Fi option really helps reduce the bill by controlling ranges and temperatures.

Why choose AirGreen for your multi-zone HVAC installation ?

• Local expertise : hundreds of wall-mounted heat pump installations in Montreal , Laval , Longueuil , North Shore and South Shore , with dedicated teams for high-rise installations, roofs and condominium buildings.

• 100% free on-site estimate and transparent prices : we provide a clear final offer before the work begins — no advance payment , you pay at the end when you are satisfied.

• Responsive after-sales service : experienced refrigeration engineers, rapid diagnostics, parts and programming optimized for your lifestyle.

What size for 2 typical areas?

• Open area 28–45 m² + bedroom 10–16 m² → 18 k + 9 k most often.

• Large, very glazed living room + closed office → 24 k + 9 k .

• Two isolated rooms → 9 k + 9 k , if the boiler covers the main heating.
  Each combination is validated after visit: orientation, glazing, air infiltration, floor, solar gain, and use (teleworking, animal presence, etc.).

Next step

Need to compare 7 + 12 , 9 + 18 , or 12 + 24 ? Evaluate a mini-cassette instead of a wall-mounted one? We'll come to your home free of charge to measure, simulate the load, and recommend the most energy-efficient configuration for your comfort.

Call to Action — Tell us about your project: (514) 316-2973 or sales@airgreen.ca We operate throughout Montreal , Laval , Longueuil , North Shore and South Shore .