Mitsubishi – Mr. Slim GX Series Wall Mount Standard Heat Pump | R-454B | Toronto & GTA Installation Included
The Mitsubishi Mr. Slim GX Series is a single-zone wall mount heat pump built for reliable year-round heating and cooling across the Toronto and GTA region. Using next-generation R-454B low-GWP refrigerant and an inverter-driven compressor, it reaches up to 28.4 SEER2 cooling efficiency and 10.7 HSPF2 heating efficiency, with operation down to -25°C (-14°F). With built-in Wi-Fi and native Mitsubishi Comfort App support — no external adapter required — the GX Series is the most connected standard wall mount in the Mr. Slim lineup. Available in seven sizes from 9,000 to 33,200 BTU. Price includes standard professional installation and up to 20 ft of lineset.
Both include built-in Wi-Fi and are excellent choices for Toronto and GTA winters. Contact Bison Air if you need help deciding.
- ✓Mitsubishi MSZ-GX Series wall mount indoor air handler — as selected
- ✓Mitsubishi MUZ-GX Series inverter heat pump outdoor unit — matched to BTU size
- ✓Wireless remote controller (included)
- ✓Built-in Wi-Fi — Mitsubishi Comfort App ready, no adapter needed
- ✓Professional installation by TSSA Certified technicians
- ✓Up to 20 ft of lineset included — longer runs quoted separately
- ✓System startup, vacuum, leak test, and commissioning
- ✓Mitsubishi product registration (required for 10-year warranty)
- ✓Built-In Wi-Fi — Comfort App Ready — Factory-installed, pairs directly with the Mitsubishi Comfort App. Full smartphone control with no external adapter required
- ✓Heats to -25°C (-14°F) — Reliable cold climate heating through Canadian winters without auxiliary heat
- ✓Up to 28.4 SEER2 / 10.7 HSPF2 — Among the highest efficiency ratings in its class for lower year-round operating costs
- ✓R-454B Refrigerant — Low global warming potential, next-generation refrigerant
- ✓Inverter-Driven Compressor — Continuously adjusts output for precise temperature without energy-wasting on/off cycling
- ✓Dual Barrier Coating — Anti-contaminant coating on the indoor heat exchanger resists dust and oil buildup for easier maintenance
- ✓Built-in Base Pan Heater — Prevents condensate freeze-up at the outdoor unit during cold weather defrost cycles
- ✓Hot-Start Technology — Fan delays until the heat exchanger is warm, eliminating cold air blasts at startup
- ✓Blue Fin Coating on Outdoor Unit — Anti-corrosion treatment on heat exchanger fins for durability in urban environments
- ✓Self Clean Mode, Econo Cool, Smart Set, Smart Dry, Powerful Mode — Full suite of comfort and energy-saving operating modes
- ✓Whisper-Quiet Operation — As low as 19 dB(A) indoors
The GX Series uses two different cabinet sizes. 9K, 12K, 15K BTU: 31-13/32" W × 9-21/32" D × 11-25/32" H (798 × 245 × 299 mm). 18K, 24K, 30K, 36K BTU: 43" W × 13" D × 17-25/32" H (1092 × 330 × 452 mm). Verify wall space and clearances with your installer before finalizing placement.
Sizing is a guideline. Contact Bison Air for a proper load calculation.
- ✓10-Year Parts & Compressor Warranty — Mitsubishi manufacturer warranty on registered equipment
- ✓1-Year Bison Air Labour Warranty — Covers installation workmanship
- ✓Optional 10-Year Labour Extension — Available for $700 — ask at time of installation
Product registration with Mitsubishi is required to activate the 10-year warranty. Bison Air handles registration at the time of installation.
- ✓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
- ✓Professional System Design & Equipment Selection
- ✓Clean, Organized Installations
- ✓Financing Available — Pre-qualify in seconds
This system may qualify for Ontario government heat pump rebate programs. Bison Air is a Registered HRSP Rebate Contractor — we handle the paperwork.
- ✓Up to $7,500 in available rebates
- ✓Financing available — pre-qualify in seconds, no upfront payment
👉 Heat Pump Rebates — Toronto & GTA
👉 Step-by-Step Ontario Rebate Guide
👉 HVAC Financing Options
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