HITACHI airHome600 | 18,000 BTU | Ultra-high-efficiency heat pump

• BROCHURE - FRANÇAIS
• BROCHURE - ENGLISH

• WiFi: Included
• Warranty (Compressor - Parts - Labor): 10-10-0
• Additional Warranty: Possible
• Piping: 1/4 - 1/2
• Voltage: 220 V
• Sound Pressure Level (Outdoor): 54.0 dB(A)
• Sound Pressure Level (Indoor): 35 / 49 dB(A)

Four-season comfort, designed for Montreal and its surrounding areas

At AirGreen, we install the HITACHI airHome600 18,000 BTU for homeowners who demand stable comfort in both summer and winter, controlled energy bills and impeccable air quality — in Montreal, Laval, Longueuil, on the North Shore and the South Shore . This very high-efficiency wall-mounted heat pump combines performance in cold weather ( continuous heating down to -25°C ), powerful cooling in summer and smart functions that adapt to your lifestyle.

Why the airHome600 18,000 BTU is a winning choice with AirGreen

A solid technical base for our climate

• Capacity : 18,000 BTUs in cooling, calibrated for open areas of condos, townhouses and full floors typical of Greater Montreal.

• Certified efficiency : SEER2 20.0 , HSPF2 11.5 , EER2 12.5 — a trio that translates into fewer kWh consumed for the same comfort.

• Cold climate : stable heating down to -25°C and 100% heat at -15°C (manufacturer's reference), which covers the majority of local winter peaks.

• R-32 refrigerant : more efficient, with a lower GWP than R-410A.

• Certifications : ENERGY STAR® and ENERGY STAR® Cold Climate (18k model).

• Quiet : 35 to 49 dB(A) indoors (low/high mode) and 54 dB(A) outdoors — ideal for Montreal alleys and courtyards.

• Electrical : 220V , 1/4 – 1/2 piping, suitable for standard residential refrigeration runs.

Healthier air every day

• FrostWash 3.0 : 3-step cycle (heat, freeze to –15°C , melt) that dislodges and flushes contaminants from the exchanger — your unit stays cleaner longer and maintains its efficiency.

• PM2.5 activated carbon filter : removes 99% of fine particles of 2.5 µm after 4.5 hours of operation, with anti-VOC and deodorizing effect.

• Mold Guard : Internal drying for approximately 60 minutes and heating of the coil to ~50°C after shutdown to inhibit the growth of mold and odors.

Smart comfort that learns your habits

• Smart Eco (presence detector) : automatically reduces consumption when the room is empty and then resumes when you return.

• SleepSense : Adjusts temperature while you sleep to avoid temperature fluctuations and save without compromising nighttime comfort.

• airCloud Go (Wi-Fi included) : remote control, monthly cost estimation , weekly programming and Smart-Fence based on geolocation.

Sustainability and easy service

• SafeGuard System : fireproof and rustproof metal casing, blue anti-corrosion coating of the condenser.

• Self-cleaning outdoor unit + DuraSpin (fan reversal) to expel dust and large deposits.

• Pro-service design : removable front panel (2-3 screws), optimized installation plate , direct access to connections without screws, removable condensate tray and easy-to-remove fan motor .

Main specifications — 18,000 BTU model (RAK-GJ18PHAA / RAC-GJ18WHAA)

• Interior : RAK-GJ18PHAA — approx. 41.34 × 10.04 × 11.57 in

• Exterior : RAC-GJ18WHAA — approx. 37.2 × 14.6 × 37.4 in

• AHRI : 215413020

• Sound levels (int.): 35 / 49 dB(A) (low/high); (ext.) 54 dB(A)

• Piping : 1/4" – 1/2" ; factory charged R-32 for standard lengths

• Wi-Fi : included (adapter)

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

• Warranties : Compressor–Parts–Labor: 10–10–0 (AirGreen; extension options possible according to manufacturer policies).

Grants and financial value

• LogisVert Program (provincial) : up to $1,800 estimated for this heat pump segment (updated July 17, 2025 ).

• Transparent invoicing : at AirGreen, final quote before work , no deposit , payment at the end when you are 100% satisfied .

• Free on-site estimate throughout Greater Montreal.

AirGreen Case Studies (selection)

• Ahuntsic – Converted plex (120 m²) : An airHome600 18 ka stabilized the open living room + kitchen . Result: –28% energy for heating compared to the old convector + portable air conditioner. The client particularly appreciated the Dry mode during the humid periods of July.

• Boucherville – single-family home : replacement of an undersized 12k wall unit with the airHome600 18k . Thanks to Smart Eco , off-season consumption dropped by approximately 18–22% according to the customer's Hydro-Québec readings.

• Laval – top-floor condo : nighttime comfort restored with SleepSense (no more overheating at 3 a.m.), reduced perceived noise thanks to the 35 dB(A) profile at low speed and the location optimized by our refrigeration engineers.

AirGreen Engineering Tips for a Successful Installation

• Sizing : We validate the envelope (insulation, air infiltration), orientation and internal loads (appliances, occupants) to confirm that 18 k BTU is the correct level.

• Refrigeration route : we favor short and straight routes , with compliant drainage slopes and closed insulation of the lines to avoid gains/losses and condensation .

• Location of the indoor unit : sufficient clearance for the large suction surface (widened mouth on the 600), air jet which sweeps the room without directly hitting a TV/sofa.

• Outdoor unit : base clear of snow accumulation; base pan heater and standard Adaptive Defrost help maintain frost performance.

• Air quality : we schedule annual maintenance (exchanger/fan cleaning, FrostWash check, PM2.5 control) to maintain actual seasonal efficiency.

Common mistakes to avoid (field feedback)

• Chronic undersizing (e.g. 12k installed “out of habit”) which causes noise, long cycles and discomfort during heat waves.

• Installation too high without easy access: FrostWash remains effective, but manual maintenance becomes complicated.

• Poorly cleared external support : snow blocks suction, more frequent defrosting , reduced efficiency.

• Forget about humidity management : Dry mode (up to ~4 L/h) in summer makes a real difference to the thermal sensation; we configure it with you.

Express FAQ

Is this 18k suitable for an entire house?
Often not : it is ideal for one floor or an open area . For a complete house, we offer multi-zone or a combination of capacities.

What about the noise?
In normal use, the interior noise level drops to 35 dB(A) (library). The exterior noise level at 54 dB(A) is well suited to dense urban environments, especially in a carefully designed location.

Is the interview complex?
No. FrostWash , the removable front panel , the removable condensate tray and direct access to the connections speed up service and reduce maintenance costs.

Why AirGreen

• Certified refrigeration engineers and fast after-sales service .

• Rive-Sud showroom (Boucherville) and offices in Montreal for visits and tests.

• Transparency : clear prices , no deposit , payment at the end .

• Support for subsidies (LogisVert) and possible financing .

Call to action — move to controlled comfort
Ready to optimize your comfort and energy costs? Contact AirGreen at 514-316-2973 or sales@airgreen.ca for a 100% free on-site estimate in Montreal, Laval, Longueuil, North Shore and South Shore. We validate the power, plan the installation and install your HITACHI airHome600 18,000 BTU according to the rules of the art.