Mitsubishi – Mr. Slim FX Series Wall Mount Cold Climate Indoor Unit | R-454B | Toronto & GTA Installation Included
Mitsubishi – Mr. Slim FX Series Wall Mount Cold Climate Indoor Unit | R-454B | Toronto & GTA Installation Included
The Mitsubishi Mr. Slim FX Series wall mount indoor unit is the premium cold climate indoor head for Mitsubishi multi-zone heat pump systems. Featuring Mitsubishi's advanced 3D i-see Sensor®, Dual Barrier Fusion coating, and built-in Wi-Fi via the Mitsubishi Comfort App, the FX Series indoor unit delivers superior comfort and air quality in any room. Available in five sizes from 6,000 to 17,200 BTU cooling capacity. This page is for the indoor unit and installation only. A compatible outdoor unit must be purchased separately. Price includes standard professional installation with up to 20 ft of lineset.
⚠️ Indoor Unit Only — Outdoor Unit Required
This page covers the FX Series indoor air handler and its installation only. To complete your multi-zone system you also need a compatible outdoor unit, purchased separately:
- MXZ Standard Series — 2 to 5-zone standard multi-zone outdoor units
- MXZ Hyper Heat Series — 2 to 3-zone cold climate Hyper Heat outdoor units
- PUMY Standard Series — 4 to 8-zone commercial-grade outdoor units (branch box required)
- PUMY-HL Hyper Heat Series — 4 to 8-zone commercial-grade Hyper Heat outdoor units (branch box required)
Contact Bison Air to confirm your outdoor unit selection and full system design before purchasing.
What's Included — Indoor Unit & Installation
- Mitsubishi MSZ-FX Series wall mount cold climate indoor air handler
- Wireless remote controller
- Standard professional installation by TSSA Certified technicians
- Up to 20 ft of lineset included — longer runs quoted separately
- Connection to existing outdoor unit and system commissioning
- Mitsubishi product registration (required for warranty)
Key Features
- 3D i-see Sensor® — Advanced infrared sensor scans the entire room, detects occupants, and automatically adjusts temperature and airflow for personalized comfort and energy savings when the room is unoccupied
- Built-in Wi-Fi — Factory-installed Wi-Fi pairs directly with the Mitsubishi Comfort App for full remote control. No external adapter required
- Dual Barrier Fusion — Anti-contaminant coating fused into the vanes and heat exchanger — keeps the indoor unit cleaner longer with less maintenance
- R-454B Refrigerant — Low global warming potential, next-generation refrigerant
- Cold Climate Rated — Engineered to work with Mitsubishi Hyper Heat and standard multi-zone outdoor units in Canadian winter conditions
- Triple-Action Filtration — Nano Platinum filter, deodorizing filter, and electrostatic anti-allergy enzyme filter capture particles, eliminate odours, and neutralize allergens
- Hot-Start Technology — Fan delays until heat exchanger is warm, eliminating cold air blasts at startup
- Econo Cool Mode — Reduces energy consumption while maintaining comfort
- Smart Set — One-touch recall of preferred temperature and settings
- Smart Dry Mode — Removes excess humidity with minimal overcooling
- Whisper-Quiet Operation — As low as 19 dB(A)
- 208-230V / 1-Phase / 60Hz
Technical Specifications
| Specification | 6K BTU | 9K BTU | 12K BTU | 15K BTU | 18K BTU |
|---|---|---|---|---|---|
| Indoor Unit Model | MSZ-FX06NA-U1 | MSZ-FX09NL-CA1 | MSZ-FX12NL-CA1 | MSZ-FX15NL-CA1 | MSZ-FX18NL-CA1 |
| Cooling Capacity (BTU/h) | 6,000 | 9,000 | 12,000 | 15,000 | 17,200 |
| Heating Capacity (BTU/h) | 9,000 | 12,000 | 13,200 | 16,500 | 17,000 |
| Electrical | 208-230V / 1-Phase / 60Hz | ||||
| Line Set Size | 1/4" × 3/8" | 1/4" × 3/8" | 1/4" × 3/8" | 1/4" × 1/2" | 1/4" × 1/2" |
| Wi-Fi | Built-in (Mitsubishi Comfort App) | ||||
| 3D i-see Sensor | Built-in | ||||
| Refrigerant | R-454B | ||||
Indoor Unit Dimensions
All six FX Series sizes share the same indoor cabinet dimensions — no size variation to plan around.
| BTU Sizes | Width | Depth | Height |
|---|---|---|---|
| 6K, 9K, 12K, 15K, 18K, 24K BTU | 39-9/32" (998 mm) | 9-3/4" (248 mm) | 12" (305 mm) |
Minimum clearances required: 4" on sides, 14" below unit, 4" above unit. Always refer to installation manual for complete requirements.
Recommended Room Size by BTU
| BTU Size | Recommended Application |
|---|---|
| 6K BTU | Very small rooms, dens, home offices (up to ~300 sq ft) |
| 9K BTU | Small bedrooms, offices (up to ~450 sq ft) |
| 12K BTU | Bedrooms, offices (~550–700 sq ft) |
| 15K BTU | Medium rooms, master bedrooms (~700–900 sq ft) |
| 18K BTU | Living areas, open-concept spaces (~800–1,000 sq ft) |
| 24K BTU | Large living areas, open-concept spaces (~1,100–1,400 sq ft) |
Room sizing is a guideline. Actual requirements depend on insulation, ceiling height, windows, and local climate. Contact Bison Air for a proper load calculation.
Optional Controls & Upgrades
The FX Series supports a range of optional control upgrades. Ask your Bison Air technician which option is right for your setup:
- Mitsubishi Hard Wired Controller — PAR-42MAACAB + MAC-497IF-E Interface — for commercial or multi-unit applications requiring a fixed wall controller
- Aidoo Wi-Fi Controller — AZAI6WSCMEL — third-party smart home integration (Google Home, Amazon Alexa, etc.)
- Auxiliary Heat Source Relay Kit — CN24RELAYKITCM3 — for controlling an external auxiliary heat source
- Auxiliary Heat Connector Cable — MAC-1710RA-U — for auxiliary heat source connection
- Thermostat Interface Module — RMF-CA200-V2 + VPL24-210 Transformer — connects to any North American 24V thermostat (Honeywell, Ecobee, Nest, etc.), thermostat not included
Why Choose Bison Air
- ✅ TSSA Certified HVAC Contractor
- ✅ Fully Licensed & Insured HVAC Technicians
- ✅ Registered HRSP Heat Pump Rebate Contractor
- ✅ Standard Installation Included — No Hidden Fees
- ✅ Up to 20 ft Lineset Included with Every Ductless Installation
- ✅ Professional System Design & Equipment Selection
- ✅ Clean, Organized Installations
- ✅ Financing Available — Pre-qualify in Seconds
- ✅ Serving Toronto, York Region, Peel Region, Barrie & all GTA Communities
Financing & Rebates Available
Upgrading your heating and cooling system is an important investment. Bison Air offers flexible financing options to help homeowners install high-efficiency HVAC systems with manageable payment plans. Some energy-efficient systems may also qualify for available rebate programs in Ontario.
Learn more about available incentives on our Heat Pump Rebates page.
Our team can help you understand the available financing and rebate options.
Related Services
- Ductless mini split systems
- Heat pump heating and cooling systems
- Heat Pump Installation Toronto
- Heat pump services in Toronto
- HVAC Services in Toronto & GTA
- HVAC Installation Toronto & GTA
Areas We Serve
Bison Air installs Mitsubishi multi-zone heat pump systems across the Toronto and Greater Toronto Area, including: Toronto| North York | Scarborough | Etobicoke | Vaughan | Markham | Richmond Hill | Aurora | Newmarket | East Gwillimbury | King City | Stouffville | Mississauga | Brampton | Oakville | Milton | Burlington | Barrie | Innisfil | Bradford | Keswick | Orillia | Ajax | Pickering | Whitby | Oshawa | Orangeville
Ready to Install? Contact Bison Air Today
Call us at 416-652-4323 or toll-free at 1-833-833-3623 to discuss your project, confirm indoor unit selection, and schedule installation.
👉 Send us a message via our Contact Form
Documents:
: Warranty:
Parts: 10 Years
Labor: 1 Years
Extend labor warranty 10 years for $700.
The price includes complete installation and warranty and is based on standard installation. However, the price may vary depending on the location and any extra work required, such as high voltage wiring, duct modification, crawl space, or any other specific installation condition.
This information is general. Contact us for proper heat pump size, talk to an advisor, or request an in-home consultation.
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