The Ductless Advantage

A ductless heat pump is an easy-to-use, energy efficient heating and cooling system equipped with the most advanced technology available in the industry.
With a state of the art INVERTER driven compressor, ultimate comfort can be delivered to any room at the touch of a button.


Offering the Best


  • 12 Years on Mistubishi Compressor
  • 12 Years on Mitsubishi Parts
  • 1 Year Formula Fabrication Full Service Warranty

Coleman Heating & Cooling

Coleman engery-efficient heating and air conditioning systems are rugged and reliable, helping you to beat the high cost of energy while providing you with long lasting comfort you can count on for years to come.

Find out more

Trane Heating & Cooling

Take control of your home's indoor temperature with TRANE's energy efficient, air conditioners, heat pumps and furnaces. Get the best air possible for your home with America's Most Trustedâ„¢ HVAC Systems.

Find out more

Rinnai & Empire Propane Heaters

Rinnai and Empire direct vent, low-profile heaters provide a perfect solution that delivers warmth and comfort for your whole home or supplemental heating needs.

Find out more

Kuma Wood Stoves & Fireplace Inserts

Kuma stoves are EPA certified and proudly made 100% in the USA. Satisfaction guaranteed at prices you won't believe.

Find out more

Our Customers Say

“Anyone thinking fire wood is cheaper has never used a Mitsubishi Ductless Heat Pump.”

Wade, Libby, MT

“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

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