Premier Heating & Air Conditioning Services in Libby, MT

 Service Your Family Can Trust!

Complete Heating & Cooling Solutions

 Keeping Your Home Comfortable In Every Season

Outdoor HVAC air conditioner and furnace unit set, dark gray metal with brand logos

Advanced Heat Pump Systems

Ductless Air Source Heat Pump Installation & Repair, Ducted Heat Pump System Services

Black wood stove with fire burning on a slate hearth in a bright room

 Furnace & Heating Services

Propane Furnace Installation & Repair, Electric Furnace Service & Maintenance, HEIL Heating System Upgrades

Beige Mitsubishi Electric Mr. Slim outdoor air conditioner unit with front fan grille

Cooling & Air Conditioning

Central Air Conditioning Installation & Repair, A/C System Diagnostics & Maintenance

Wall-mounted digital thermostat displaying 68° on a beige wall.

System Optimization & Maintenance

Precision Tune-Ups (PTU), Smart Thermostat Integration & Installation

What Our Customers Say

We take immense pride in delivering top-quality heating and cooling services that earn the trust of our neighbors. Our commitment to clear communication, expert craftsmanship, and reliable service is reflected in our customer feedback. Discover how our dedicated HVAC solutions make a lasting difference in homes throughout our region.

About Us

Formula Fabrication provides comprehensive installation, repair, and maintenance for ductless heat pumps, high-efficiency heat pumps, gas and electric furnaces, and air conditioning systems. Built on honesty, integrity, and treating customers like family, we prioritize long-term efficiency and indoor comfort. Our team is dedicated to serving Libby, MT, and neighboring communities with unrivaled craftsmanship.

Why choose Formula Fabrication?

Checkmark symbol.

Licensed & Fully Insured

 Complete peace of mind knowing our operations meet rigorous local licensing and professional insurance standards.

Checkmark symbol.

Top-Tier Equipment

 Authorized installers of leading HVAC brands including HEIL, Mitsubishi, Trane, Coleman, Rinnai, Empire, and Kuma.

Checkmark symbol.

Precision Tune-Ups

 Comprehensive maintenance programs designed to eliminate breakdowns and lower monthly energy bills.

Checkmark symbol.

Local Trust & Integrity

Honest, transparent communication and personalized care backed by strong community values.

What Our Customers Are Saying

At Formula Fabrication, we pride ourselves on delivering exceptional service. But don't just take our word for it—here's what our satisfied customers have to say about their experiences with us.

Areas We Serve

Libby, MT

Troy, MT

Heron, MT

Noxon, MT

Trout Creek, MT

Thompson Falls, MT

Bonners Ferry, ID

Naples, ID

Troy Creek, MT

Yaak, MT

Bull Lake, MT

Moyie Springs, ID

 Industry-Leading Equipment Partners

 We partner with the world's most trusted HVAC manufacturers to provide long-lasting durability, quiet operation, and peak energy performance. These strong industry alliances allow us to offer top warranties and advanced climate technology.