- (406) 257-3196
- 630 W Idaho St. Kalispell
Since 1942, General Sheet Metal has provided HVAC, sheet metal fabrication, gas piping, and mechanical services throughout Kalispell and the Flathead Valley. From heating and cooling systems to custom fabrication projects, our team delivers expert craftsmanship backed by decades of local experience.
From residential comfort solutions to commercial mechanical systems, we help homeowners and businesses throughout Northwest Montana stay comfortable, efficient, and prepared for every season.
Schedule Online | Call (406) 257-3196
Whether you’re building a new home, upgrading aging equipment, or improving energy efficiency, General Sheet Metal provides professional HVAC installation and replacement services tailored to your needs.
Heating System Installation
We install high-efficiency furnaces, heat pumps, and complete heating systems designed to keep Montana homes comfortable through long winters. Our team helps you select properly sized equipment for maximum performance and efficiency.
Cooling System Installation
From central air conditioning systems to complete cooling upgrades, we install reliable solutions that keep your home comfortable during the summer months.
Ductless Mini-Split Systems
As Bryant Certified Ductless Pros, we install advanced mini-split systems that provide flexible, energy-efficient comfort without requiring traditional ductwork. Ductless systems are ideal for additions, garages, workshops, and homes where duct installation isn’t practical.
HVAC Replacements & Efficiency Upgrades
If your current system struggles to keep up, requires frequent repairs, or has become inefficient, we can help you upgrade to modern equipment that improves comfort while reducing energy costs.
When your heating or cooling system isn’t working properly, our experienced technicians provide accurate diagnostics and dependable repairs to restore comfort quickly.
System Diagnostics & Repairs
We repair a wide range of HVAC components, including compressors, motors, thermostats, electrical controls, ductwork, and more. Our technicians thoroughly evaluate your system, explain the issue, and provide honest recommendations for repair or replacement.
24/7 Emergency HVAC Repair
Heating and cooling emergencies don’t always happen during business hours. When your furnace stops working in the middle of winter or your cooling system fails during the hottest days of summer, our team is available to respond with emergency HVAC service throughout the Flathead Valley.
Routine maintenance is one of the best ways to protect your HVAC investment, improve efficiency, and reduce the likelihood of unexpected breakdowns.
Annual System Inspections
Regular inspections allow our technicians to identify potential issues before they become costly repairs while ensuring your system operates safely and efficiently.
Filter Replacement & Airflow Optimization
Clean filters improve indoor air quality, reduce strain on your equipment, and help maintain consistent airflow throughout your home or business.
Preventative Maintenance Memberships
Our maintenance memberships help homeowners stay ahead of repairs with scheduled service, priority support, and routine system care. Services may include equipment cleaning, lubrication, thermostat calibration, refrigerant checks, performance testing, and other preventative maintenance measures designed to maximize equipment lifespan.
For more than 80 years, General Sheet Metal has been a trusted source for custom sheet metal fabrication throughout Northwest Montana.
Custom HVAC Ductwork
We design, fabricate, and install custom duct systems for residential and commercial HVAC applications. Every project is built to ensure proper airflow, energy efficiency, and long-term performance.
Specialty Fabrication Projects
Our fabrication shop is equipped to handle a wide variety of custom projects, including:
If you have a custom project in mind, our team can help develop a solution that meets your needs.
Beyond traditional HVAC services, General Sheet Metal offers a variety of specialized mechanical and comfort solutions.
Indoor Air Quality Solutions
Gas Piping & Gas Appliance Services
Commercial HVAC Services
Ventilation Systems
And much more.
For generations, homeowners and businesses throughout the Flathead Valley have trusted General Sheet Metal because we combine HVAC expertise, custom fabrication capabilities, and exceptional customer service under one roof.
