A furnace that sits idle from spring to fall needs attention before it runs every night. Tri-County Air Service furnace maintenance cleans, tests, and adjusts your system so it starts reliably, burns safely, and heats efficiently all winter.
Our NATE-certified technicians maintain furnaces for homeowners across Hattiesburg, Wiggins, and South Mississippi. Members of our Home Care Comfort Club also get priority service and savings all year long.
Call 601-258-3804 or enroll in a maintenance plan today.
Why Regular Maintenance Matters
Safety
Gas furnaces burn fuel inside your home. A cracked heat exchanger, blocked flue, or loose gas connection can expose your family to carbon monoxide. A maintenance visit checks each of these before you run the furnace every day.
Reliability
Dirty flame sensors and worn igniters are among the most common reasons a furnace will not start. Both are simple to catch during a tune-up and far cheaper than an emergency furnace repair call on a cold night.
Efficiency
Dirty burners, clogged filters, and poor airflow force your furnace to run longer to reach the same temperature. A tuned system uses less fuel to deliver the same comfort.
Warranty Coverage
Most furnace manufacturers expect annual professional maintenance. Skipping it can put your warranty coverage at risk when you need it most.
Signs Your Furnace Is Overdue
If it has been more than a year since your last tune-up, or you notice any of these, schedule a visit soon:
- Higher gas bills than last winter with similar weather
- A yellow or flickering burner flame instead of a steady blue one
- The furnace takes several tries to light or shuts off early
- More dust around your home than usual
- Rooms that never quite reach the thermostat setting
What’s Included
Our furnace tune-up is a full inspection, not a quick look. Your technician will work through three areas:
Safety Checks
- Inspect the heat exchanger for cracks and corrosion
- Check for carbon monoxide at the furnace
- Inspect the flue and venting for blockages
- Check gas connections for leaks
- Test the limit switch and other safety controls
Burners and Ignition
- Clean the burners
- Clean and test the flame sensor
- Test the igniter or pilot assembly
- Verify gas pressure
Airflow and Electrical
- Inspect the blower motor and clean the blower wheel as needed
- Tighten electrical connections
- Check the air filter and replace it if needed
- Test the thermostat and run a full heating cycle
After the visit, we walk you through the results. If we find a problem, you get upfront pricing before any repair is made.



