Install a Mitsubishi ductless single-zone system and instantly improve your utility bills!

With just three major components – the indoor unit, the outdoor unit, and the controller, these energy efficient systems are installed quickly and easily.


  • Hyper-Heat models – Guaranteed heat at -18° (heating & cooling)
  • Slim, wall-mounted air conditioners (AC only)
  • Slim, wall-mounted heat pumps (heating & cooling)

These units are ideal for living rooms, dining rooms, basements, kitchens, sunrooms, bedrooms, offices and more!

NO MORE HOT & COLD SPOTS with H2i Technology!

The H2i hyper-heat models feature special technology for delivering exceptional heating performance in extreme climates.

  • One of the only heat pumps in the world proven to heat at -18°F ambient, producing up to 100% heating capacity at -5°F
  • Hot start technology provides warmth from the start, reducing drafts

In other words: HEAT, AND LOTS OF IT!

Click here to read more about H2i Hyper-Heat models…
    The MSZ-FS family of Hyper-Heating INVERTER residential systems offer year-round, high-efficiency cooling and heating for a variety of rooms, including bedrooms, basements, sunrooms, and more. The slim, wall-mounted indoor units provide zone comfort control while the INVERTER-driven compressor and electric LEVs in the outdoor unit provide closer control and higher efficiency with minimal power usage.
  • 30.5 – 22.0 SEER, 13.5 – 12.0 HSPF, INVERTER-driven compressor
  • Quiet operation as low as 20 dB(A)
  • Triple action filtration:
    • Nano-platinum filter
    • Electrostatic anti-allergen enzyme filter
    • Deodorizing filter
  • Double-vane air delivery for enhanced circulation
    • Option to set each vane separately
    • Indirect or direct airflow setting options
    • Natural flow setting that creates air movement like a natural breeze
  • 3D i-see Sensor™
    • Infrared human sensing technologies to measure location of human heat signatures
    • Senses floor temperature in order to deliver conditioned air to the areas that need it, using double-vane airflow and motorized vertical vanes
  • NEW multi-function wireless controller

Our Customers Say

“Our Congregation has saved over $11,000 heating our church since Formula Fabrication installed Mitsubishi Ductless Heat Pumps in January 2011.” (As of 2012)

Ron, St John's Lutheran Church, Libby, MT

“It’s incredibly simple to use & our home stays at an even temperature. Our wood stove will never compete.”

Wayne & Teresa, Troy, MT

“We have 3 heating options – cadets, fireplace insert & ductless. Our ductless is by far the BEST OPTION & is our main heat source!”

Don & Jerri, Noxon, MT

Formula Fabrication
31936 US Highway 2, Libby, Montana
Office Hours:
Monday - Friday, 8:00am to 5:00pm