HVAC Knowledge Base & Resources

Frequently Asked Questions

  • What services does Formula Fabrication offer?

    We specialize in ductless air source heat pump installations, ducted heat pumps, propane and electric furnaces, central air conditioners, precision tune-ups, and thermostat integration.  

  • How do ductless heat pumps work during cold Montana winters?

    Modern ductless heat pumps are engineered specifically for cold climates, efficiently extracting heat energy from outside air even when ambient temperatures drop below freezing.

  • How often should I schedule an HVAC tune-up?

    We recommend scheduling a Precision Tune-Up twice per year: once in the spring for your cooling system and once in the autumn for your heating equipment.

  • What operating hours does Formula Fabrication maintain?

    Our business hours are Monday through Friday, 8:00 AM to 5:00 PM. We are closed on weekends.

  • Are your technicians licensed and insured?

    Yes, we are fully licensed and insured for your complete protection and peace of mind.  

  • Why should I consider replacing my older furnace with a HEIL system?

    HEIL furnaces offer high fuel energy ratings, advanced sound reduction, and superior reliability, significantly cutting winter heating bills.

  • What regions fall within your service area?

    We serve Libby, Troy, Heron, Noxon, Trout Creek, Thompson Falls, Bull Lake, Troy Creek, and Yaak in Montana, as well as Bonners Ferry, Naples, and Moyie Springs in Idaho.

  • What are the signs that my air conditioner needs professional repair?

    Common signs include weak airflow, warm air blowing from vents, unusual banging or squealing noises, rising energy bills, or water leaking around the unit.

  • How long does a typical ductless heat pump installation take?

    Most single-zone ductless installations can be completed in just one day, while multi-zone systems typically take one to two days depending on layout complexity.

  • How can I schedule a service call with Formula Fabrication?

    You can submit a request through our online contact form, book online through our launch page links, or call our team directly during business hours at 406-293-3994.