HITACHI airHome800 Wall-Mounted Heat Pump | 18,000 BTU (-30°C)

• 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): 36 / 52 dB(A)

Elite comfort, designed for our Quebec winters

At AirGreen, we install wall-mounted heat pumps that truly deliver in Montreal , Laval , Longueuil , the North Shore and the South Shore . The HITACHI airHome800 – 18,000 BTU represents the ideal balance between cold climate performance , indoor air quality and ease of use for homes, condos and plexes in the greater metropolitan area.

Why the airHome800 18,000 BTU is a must for your property

Performance calibrated for cold

• Reliable heating down to -30°C , with 100% capacity at -20°C : stable heat during cold spells and defrosting optimized by Adaptive Defrost .

• Energy efficiency : SEER2 21.5 , HSPF2 11.5 , EER2 14.0 – values ​​that reduce annual bills while maintaining comfort.

• R-32 gas : new generation refrigerant, efficient and with lower GWP.

• Operating range : cooling -20°C to +46°C , heating -30°C to +24°C – perfect for our temperature variations.

Air quality and equipment hygiene

• FrostWash 3.0 : Controlled frost on the exchanger, melting and removal of impurities to keep the coil clean, limit odors and maintain performance.

• Mold Guard 2.0 : Automatic drying of the indoor unit when internal conditions favor mold growth.

• PM2.5 activated carbon filter : helps remove fine particles and deodorize the room over time.

• DuraSpin (outdoor unit) : reverses the fan direction to expel large accumulated dust and preserve heat exchange.

Connectivity and daily comfort

• Wi-Fi included (integrated adapter) and airCloud Go app: remote control, energy cost estimates, error code display and FrostWash activation.

• Smart Eco presence sensor : switches to eco mode after 20 minutes of absence, then returns to initial settings upon your arrival.

• SleepSense : Fine adjustments during the night for stable and economical sleep.

Silence and compactness

• Indoor noise level up to 36 dB(A) in quiet mode; 54 dB(A) outdoors for the 18,000 BTU.

• Neat dimensions to fit easily into an open-plan living room or central corridor.

(Specifications taken from the official technical data sheet; see the table on page 4 for the values ​​of the 18,000 BTU model.)

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Key Specifications – 18,000 BTU Model

• Capacity : 18,000 BTU (nominal cooling), 21,600 BTU (nominal heating).

• Models : RAK-XJ18PHAA (indoor) / RAC-XJ18WHAA (outdoor).

• Power supply : 208/230 V , 1 ph, 60 Hz – MCA 20 A , MOP 35 A.

• Indoor airflow (max) : up to 700 CFM in heating.

• Dehumidification : 4.0 L/h (Dry mode, 18 k).

• Acoustics : 36–52 dB(A) indoors (depending on speed); 54 dB(A) outdoors.

• Refrigerator piping : 1/4" – 1/2" , max length 50 m , max height difference 30 m .

• Equipment : R-32 , ENERGY STAR® (including cold climate).

• Recommended accessories for snowy climates : snow protection and clear base for the outdoor unit.

Good to know about installation: the installation height of the outdoor unit, the management of the condensate drain , the wind orientation and the clearance around the machine are decisive for performance in extreme cold and longevity. Our teams validate these points during the on-site estimate.

How we install it in Montreal, Laval and Longueuil

AirGreen Method – Field Steps

1. Free technical visit : electrical readings, piping route (1/4–1/2), drilling, location of disconnect and drain .

2. Sizing : validation of loads by surface area and by use (open area vs. closed rooms), taking into account infiltration and glazing.

3. Installation : choice of interior wall (optimal air recycling), snow-free base , hatches for line protection, drain slope and 5-wire cabling if third-party inspection required.

4. Commissioning : deep vacuum, leak test, current verification and superheat/subcool according to the actual length of the lines.

5. Configuration : connection to airCloud Go , schedule programming, winter/summer usage advice.

Recommended maintenance

• Rinse the pre-filters every 2–3 months depending on usage.

• Preventive cleaning of the exchanger (inside/outside) and the condensate tray; periodic activation of FrostWash .

• Annual check of currents, pressures, defrosting and sensors – especially after a harsh winter.

Three recent concrete cases

Condo on the Plateau-Mont-Royal (730 sq. ft., south facing)

Objective: main heating and quiet air conditioning.
Result: With the airHome800 18k, we maintain 22°C to -24°C outside without electrical backup, thanks to 100% capacity at -20°C and responsive defrosting. Residents note a significant reduction in noise compared to their old window unit.

Bungalow in Laval (1,100 sq. ft., semi-finished basement)

Objective: consistent comfort and remote control for parents who are often on the move.
Result: Smart-Fence and SleepSense scenarios configured in the app; consumption monitored via the cost estimation tool. The couple adjusts the settings during unexpected absences; winter bills decrease after the first month of use.

Duplex in Longueuil (owner-occupant)

Objective: to improve the air quality of a ground floor near a busy road.
Result: PM2.5 filters and the Mold Guard cycle limit residual odors and humidity. The walls remain dry at the end of the season thanks to a corrected drain route and the periodic activation of FrostWash .

Common Mistakes We Avoid

• Undersize an open area: 18 k is often suitable, but a load calculation avoids over-revving in both cold and hot conditions.

• Outdoor unit too low : exposure to snow drifts and extended defrost cycles. We aim for adequate lift and clearances .

• Neglected drainage : possible counter-slope or freezing of the pipe – we plan tracing or insulation if necessary.

• Improvised control wiring : For integration with a 3rd party thermostat , we pull a clean and tested 5-wire .

• Lines too long without adjustment : we check the refrigerant charge according to the actual length and the risers.

What you gain with AirGreen

• Complete support : from estimate to airCloud Go configuration.

• Certified refrigeration installers : precise diagnostics, rigorous commissioning, rapid after-sales service .

• Transparency : clear final price before work , no deposit to pay; payment at the end when you are satisfied.

• Program eligibility : ENERGY STAR cold climate appliances – we guide you to provincial subsidies (e.g. LogisVert, according to current criteria).

Quick Facts – Useful Data for Your Project

• AHRI : 215911632

• Indoor noise (min) : 36 dB(A)

• External noise (high) : 54 dB(A)

• Piping : 1/4"-1/2" | 220 V (208/230)

• Dehumidification (18 k) : 4.0 L/h

• Key features : HeatForce , Adaptive Defrost , FrostWash 3.0 , Mold Guard 2.0 , PM2.5 , Smart-Eco , SleepSense , Built-in Wi-Fi .

Ready to optimize the comfort of your home in Montreal , Laval , or Longueuil ? Contact AirGreen for a 100% free on-site estimate and a clear quote. We size, install, and configure your wall-mounted heat pump for lasting comfort – summer and winter.