HITACHI airHome Multi 2-Zone Wall-Mounted Heat Pump | 24,000 BTU Compressor

• BROCHURE FRANÇAIS
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• WiFi: Optional
• Warranty (Compressor - Parts - Labor): 10-10-0 years
• Additional Warranty (10-10-10): Possible
• Voltage: 220 V
• Sound Pressure Level (Outdoor): 54.0 dB(A)

Four-season comfort, two zones, zero compromises — the smart HVAC solution for Montreal, Laval, Longueuil, North Shore and South Shore

At AirGreen, we recommend the HITACHI airHome Multi 2-zone wall-mounted heat pump (24,000 BTU compressor) to homeowners who want to cool and heat two independent spaces with a single outdoor compressor, while preserving the façade and quiet sound. This multi-split inverter system manages two wall-mounted heads (and can accommodate a 3rd zone if needed), combines energy efficiency , reliability in extreme cold and smart features that make everyday life easier in Montreal and its surrounding areas. Key data from the official data sheet: continuous operation down to -20 °C , R-32 refrigerant, FrostWash technologies, Mold Guard , R32 leak sensor and Wi-Fi control options.

Technical specifications and optimal 2-zone configuration in Montreal, Laval and Longueuil

What's in your airHome Multi 24,000 BTU setup

• Outdoor unit : RAM-G24N3HAA , 220 V , R-32 , noise level approx. 54 dB(A) , SEER2 up to 22.0 , HSPF2 up to 9.5 , heating range down to -20 °C . Compatible with 2 to 3 zones .

• Wall-mounted indoor units (choice depending on the room): airHome 400 series (simplicity, easy maintenance) or airHome 650 (presence detection and eco-shutoff). Noise level from 27–29 dB(A) depending on model/size — ideal for bedrooms and offices.

• Available capacities per head : 7,000 / 9,000 / 12,000 / 18,000 / 24,000 BTU to adapt each zone to its actual thermal load (surface, insulation, glazing, sunshine).

• Exterior dimensions (approx.): 33.5 × 11.7 × 31.5 in — compact size makes it easy to fit into tight urban lots.

Winter reminder : In multi-zone mode, the outdoor power is distributed among the heads, which operate simultaneously. Proper sizing per zone and intelligent programming are essential for maintaining stable comfort during the extreme cold of the metropolitan area.

Why this model stands out in the Montreal climate

Efficiency and savings

• SEER2 up to 22.0 (summer) and HSPF2 up to 9.5 (region 4) to reduce consumption on the North Shore and South Shore .

• Inverter compressor : variable speed that avoids on/off cycles and stabilizes the temperature in each zone.

Healthier indoor air

• FrostWash : the internal coil is frozen then defrosted to dislodge dust and mold; the airflow is maintained over time.

• Mold Guard : automatic drying ~60 min after cooling to limit odors and mold.

• PM2.5 / ViroSense S filters : reduction of fine particles and inhibition of viruses/bacteria , a plus for families sensitive to air quality.

Safety and durability

• R-32 leak sensor on indoor units (light/sound alert), anti-corrosion exterior body, protected electronics and anti-surge delay — details that count for longevity in Montreal, Laval, Longueuil .

Connectivity and control

• Optional Wi-Fi (airCloud Go) for remote control of schedules and temperatures; presence detection (Smart Eco / Auto-Off, 650 series) which reduces consumption when the room is unoccupied.

Examples of 2-zone configurations that we often install

• Condo in Griffintown (Montreal) : 9,000 BTU for the closed bedroom + 12,000 BTU for the living room-kitchen area . Objective: silence at night and responsiveness in the open area during the day.

• Bungalow in Laval : 7,000 BTU for an office in the basement + 12,000 BTU for the southwest-facing living room (solar gains).

• Townhouse in Longueuil : 12,000 BTU for open-plan living room/kitchen + 9,000 BTU for the upper floor ; priority given to supplemental heating during cold spells.

We validate the load by on-site measurements (surface area, ceiling height, infiltration, glazing, exposure, actual use) and simulate the capacity distribution when both zones demand at the same time.

AirGreen Installation Best Practices

Outdoor installation

• Compliant clearances, anti-vibration support , management of defrost water (keep away from aisles and entrances).

• Optimized refrigeration path (lengths/elbows) to limit pressure losses ; compliance with diameters (liquid 1/4", gas 3/8" to 1/2" depending on the head) and the manufacturer's maximum lengths .

Installation of wall heads

• Height and clearances for optimal air sweeping ; sound levels ≤ 27–29 dB(A) sought in the room.

• Waterproof openings ( air barrier , weather stripping) to prevent infiltration and thermal bridges.

Commissioning

• Certified vacuum draw , leak test, probe configuration , remote control/app synchronization and user training.

What our construction sites say (customer feedback)

• Brossard, duplex : after switching to HITACHI multi-zones , electricity bill lowered in the summer and heating started faster in the fall; occupants satisfied with the discreet breeze in the bedrooms.

• Villeray, triplex : owner-occupant delighted with the temperature stability when living room and office require it at the same time; the eco mode automatically shuts off the office head when he leaves.

• Boisbriand : Asthmatic family reporting a perception of fresher air after regularly activating the FrostWash cycle .

Mistakes to avoid with a 2-zone multi-split

1. Oversize the heads “just in case.” Result: short cycles, poorly managed humidity, uneven comfort.

2. Forget about simultaneity : if the two zones are heavily used during cold peaks, validate the available capacity of the compressor and adjust the size of the heads .

3. Sloppy exterior placement : noise perceived through neighboring windows, poorly managed frost, complicated maintenance access.

4. Conflicting schedules : opposing instructions between zones = loss of efficiency. We harmonize schedules and setpoints .

Practical information AirGreen

• Provincial grant (LogisVert) : $1,920 (updated May 1, 2025 ).

• ENERGY STAR® / Cold Climate : eligible, depending on the module combination selected.

• AHRI number for the standard 24,000 BTU configuration: 216097710 .

• Addresses and services : Montreal (4951 Ste-Catherine Est) and South Shore – Boucherville (1370 Joliot-Curie, loc. 712) .

• Contact : sales@airgreen.ca | (514) 316-2973 — 100% free on-site estimate and transparent prices before work.

For all these reasons, the HITACHI airHome Multi 24,000 BTU stands out as a reliable, scalable and healthy solution for homes, condos and duplexes in Montreal, Laval, Longueuil, North Shore and South Shore — today and for the long term.

NEXT STEP

Need precise sizing and a final price for your 2-zone project? Contact AirGreen now: (514) 316-2973 or sales@airgreen.ca We come on site free of charge , validate your configuration (e.g. 7,000 + 12,000 BTU or 9,000 + 12,000 BTU ), and give you a transparent quote - you pay at the end, when you are 100% satisfied .