RXM12WVJU9
Daikin 12,000 BTU 1 Ton
Single-Zone Wall
Cold Climate
Ductless Heat Pump
The RXM12WVJU9 is a Daikin ATMOSPHERA cold-climate single-zone wall-mount ductless heat pump paired with the matching FTXM indoor head. It’s inverter-driven (variable-speed), uses R-32 refrigerant, and is built for efficient heating and cooling across a wide outdoor temperature range.
This 12k size is a strong fit when 9k is borderline — a larger bedroom, bigger basement zone, a small open-concept area, or a space that runs hotter/colder because of windows or layout. It’s often the “sweet spot” for a single larger room that needs real capacity without jumping to a much bigger unit.
We still treat sizing as a comfort problem, not a square-footage math problem. We confirm the match on-site, then commission it properly so it performs like it should (airflow, placement, and real start-up checks).
We confirm sizing and pricing on site – no pressure, no upsells.
Installed in Ottawa and surrounding areas by Peak Comfort HVAC
Specs for the RXM12WVJU9
- System type: Single-zone wall-mount cold-climate ductless heat pump (Daikin ATMOSPHERA / R-32)
- Rated capacity: 12,000 BTU/h cooling / 13,600 BTU/h heating
- Max heating capacity: 13,600 BTU/h @ 5°F (-15°C)
- Max heating capacity: 10,700 BTU/h @ -13°F (-25°C)
- Matched indoor unit: FTXM12WVJU9
- Matched outdoor unit: RXM12WVJU9
- Efficiency: 25.2 SEER2 / 13.2 EER2 / 10.7 HSPF2
- COP: 4.4 rated / 2.0 @ 5°F (-15°C)
- Lowest sound level: Indoor 23 dB(A) cooling / 26 dB(A) heating; Outdoor 49 dB(A) cooling / 52 dB(A) heating
- Refrigerant: R-32
- Indoor dimensions (H×W×D): 11-3/4" × 36-1/4" × 10-13/16"
- Outdoor dimensions (H×W×D): 23-7/16" × 33-1/4" × 11-13/16"
- Weight: Indoor 29 lb / Outdoor 96 lb
- AHRI reference #: TBD
Technical documents
Key features of the RXM wall-mount system
- Cold-climate heating performance: designed to deliver strong heat output in low outdoor temperatures (including operation down to -13°F / -25°C).
- Inverter-driven modulation: ramps output up/down for steadier temperatures and fewer “blast then stop” swings.
- High efficiency ratings (model-dependent): up to 27.4 SEER2 and up to 11.2 HSPF2 across the lineup.
- R-32 refrigerant: lower-GWP refrigerant used in Daikin’s next-generation single-zone ductless equipment.
- Humidity control features: hybrid cooling and dry-mode style control strategies to reduce humidity without overcooling.
- Comfort-focused airflow control: comfort mode + 3D airflow behaviors designed to distribute air more evenly and avoid drafts.
- Built-in Wi-Fi / app control: optional smartphone control without needing a separate add-on adapter (setup and usability vary by home).
- Install details matter (Peak Comfort standard): correct sizing, clean line routing, proper drainage planning, pressure test + evacuation, and start-up checks with real measurements — not guesswork.
- Winter reliability note: a drain-pan heater is commonly recommended in heavy snowfall / high winter humidity areas or where temps can drop below about 5°F (-15°C), to help manage ice.
Want to see if this ductless is the right fit?
Book a no-pressure ductless estimate. We’ll confirm layout, placement, and sizing - then give you clear options and pricing.
Get in Touch
Office Address:
275 Montfort St, Ottawa
ON K1L 5N8
Servicing: Ottawa, Orleans, Nepean, And the surrounding areas
Phone:
E-Mail:
info@peakcomfort.ca
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Email: info@peakcomfort.ca
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