Mitsubishi Electric · Heat Pump
Mitsubishi FX (Hyper-Heat)
The Mitsubishi Electric FX (Hyper-Heat) is a ductless mini-split heat pump built for cold Ontario winters. It holds 100% of its rated heat down to -23°C and keeps running to -30°C. For Toronto homes without ductwork, or for rooms your furnace never quite reaches, it handles both heating and cooling from a single wall-mounted indoor head. Megacity HVAC installs it as a single-zone or multi-zone system.
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Why Toronto Homeowners Choose the Mitsubishi FX (Hyper-Heat)
A Good Fit If
Manufacturer Specs
- Model
- MUZ-FX12NLHZ + MSZ-FX12NL
- Series
- M-Series FX (Hyper-Heating H2i)
- Cooling efficiency
- 29.9 SEER2 (9k model: 33.1)
- Heating efficiency
- 12.4 HSPF2
- Cold-climate
- 100% heat at -23°C · operates to -30°C
- Type
- Variable-speed inverter (ductless)
- Indoor sound
- 21 – 42 dB(A)
- Refrigerant
- R-454B (low-GWP)
- Capacity
- 12,000 BTU/h · single-zone (multi-zone available)
- Warranty
- 10-year compressor & parts (with registration)
- Certifications
- ENERGY STAR® Certified
Specs published by Mitsubishi Electric.
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Lease-to-Own Through Enbridge Sustain
Get a new furnace, AC, heat pump, or water heater installed with nothing down. As an Enbridge Sustain Trusted Partner, we make a new system affordable from day one.
- No upfront cost: $0 down on approved credit
- Maintenance and repairs included for the term
- Buyout option: Sustain owns the equipment during the term
Mitsubishi FX (Hyper-Heat): FAQ
Will this actually keep my room warm through a Toronto winter?
Yes. The FX Hyper-Heat delivers 100% of its rated heat down to -23°C and continues operating to -30°C, which covers the coldest stretches we see in the GTA. Unlike basic heat pumps that lose most of their output below freezing, this one is engineered specifically for cold-climate heating.
How efficient is it, and what do those numbers mean?
It's rated at 29.9 SEER2 for cooling (33.1 on the 9,000 BTU model) and 12.4 HSPF2 for heating, both strong figures, and it's ENERGY STAR Certified. SEER2 measures cooling efficiency and HSPF2 measures heating efficiency over a season; higher is better on both. In plain terms, it moves a lot of heat per dollar of electricity.
Can it heat or cool more than one room?
The single-zone setup pairs one outdoor unit with one indoor head (the spec'd model is 12,000 BTU/h). Multi-zone configurations are available, letting one outdoor unit feed several indoor heads in different rooms. We'll size it to your space during the in-home visit: capacity needs to match the room, not just the square footage.
Are there rebates, and what's the warranty?
Megacity offers in-house rebates. Ask at your quote. We don't file government rebate paperwork for customers. The FX carries a 10-year compressor and parts warranty when the unit is registered after install.
Get a Quote on the Mitsubishi FX (Hyper-Heat)
Tell us about your home and we will give you honest pricing and sizing for the Mitsubishi FX (Hyper-Heat), installed across Toronto and the GTA.
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