FURNACE REPAIR IN NORTH LOUISIANA

When a North Louisiana cold snap rolls in and the furnace quits, you don't want a runaround — you want the licensed crew you already trust to show up, find the real problem, and fix it. Mark Johnson & Sons has kept homes warm across Ruston, Monroe, West Monroe, Shreveport, Bossier City, and Grambling since 1997, and we repair every major gas and electric furnace brand: Carrier, Trane, Lennox, Goodman, Rheem, York, American Standard, Bryant, and Amana.

Most no-heat calls come down to a handful of parts. A dirty flame sensor or a cracked hot-surface igniter kills ignition; a failed blower capacitor or motor stops air from moving; a tripped high-limit switch, a bad gas valve, a failing inducer, or a corroded control board locks the furnace out on safety. Our trucks carry the common ones, so the majority of repairs finish in a single visit — flat-rate, quoted before we start, service call waived when you do the repair.

What we repair

• Ignition faults — flame sensors, hot-surface and spark igniters, pilot assemblies
• Airflow problems — blower motors, run capacitors, and control boards
• Gas & safety controls — gas valves, pressure switches, high-limit and flame-rollout switches, inducer motors
• Thermostat & wiring faults — dead, miswired, or short-cycling thermostats
• Heat exchangers — inspected on every no-heat call for carbon-monoxide cracks

Repair vs. replace

If your furnace is under about 12 years old and the repair runs less than a third of a replacement, fixing it is almost always the smart money. Once a unit is 15+ years old, breaking down every season, or showing a cracked heat exchanger, replacement usually wins — the repeat repairs and the fuel a worn furnace wastes add up faster than most people expect. We give you the honest math and a flat-rate quote on both, with zero pressure to buy a system you don't need.

What Mark Johnson & Sons does differently

Every tech is on our payroll — no subcontractors — and every quote is flat-rate, based on the job, not an hourly meter running while we diagnose. We answer live 24/7, and no-heat calls during a hard freeze get priority dispatch. Ask about our service savings agreement plans: from $189/year, covering a Fall heating tune-up and a Spring AC tune-up, 15% off every repair, and front-of-line scheduling on the freezing nights when everyone else is calling too.