Boiler Repairs in Shreveport, LA

Experienced Boiler Diagnostics & Repair for Northern Louisiana Homes

When your boiler fails to produce heat or starts behaving erratically, your household comfort disappears fast. Mark Johnson & Sons Plumbing provides professional boiler repair, maintenance, and diagnostics throughout Shreveport — restoring your heating system and identifying the underlying issues that caused the failure. As part of our comprehensive plumbing services in Shreveport, we deliver professional results backed by decades of experience.

Why Boiler Repairs Matter

Northern Louisiana winters are not as severe as the northern states, but Shreveport regularly sees temperatures drop into the 20s and 30s from December through February. A boiler failure during a cold snap leaves your family without heat and puts your plumbing at risk of freezing — compounding one problem into several.

Boilers operate under pressure and heat, which means small problems escalate quickly. A minor leak at a valve fitting becomes a major water damage event. A pressure relief valve that fails to operate creates a safety hazard. A circulator pump that runs dry burns out and leaves your radiators cold. Early professional intervention on warning signs prevents cascading failures.

Shreveport’s older neighborhoods — South Highlands, Broadmoor, Highland — contain homes built in eras when hydronic heating was more common. These systems have often been partially modified over decades, with mixed pipe materials, added zones, and replacement components that may not be ideally matched. Diagnosing issues in these systems requires a technician who understands both the plumbing and the heating sides of the equation.

Our Boiler Repair Services

Diagnostic Assessment

We begin with a comprehensive evaluation of your boiler’s operation — checking pressure readings, inspecting combustion components, testing safety controls, and examining the distribution system. Accurate diagnosis prevents paying for repairs that do not address the actual problem.

Pressure Regulation

Boilers that lose pressure, build excessive pressure, or cycle the relief valve have issues with the expansion tank, fill valve, or pressure-reducing valve. We identify which component is failing and restore stable system pressure.

Circulator Pump Repair & Replacement

The circulator pump moves heated water through your radiators or baseboard units. When it fails, heat distribution stops even though the boiler itself is firing. We replace pumps, address air locks in the system, and verify proper flow rates.

Leak Repair

Boiler leaks occur at valve connections, pipe joints, the heat exchanger, and tank seams. We locate the source, determine whether repair or component replacement is appropriate, and restore a sealed system.

Zone Valve Service

Multi-zone systems use motorized valves to direct heated water to different areas of your home. When a zone valve sticks, fails to open, or will not close, specific rooms lose heat. We repair or replace zone valves and verify the thermostat-to-valve wiring.

Annual Maintenance

Preventive maintenance extends boiler life and maintains efficiency. Our service includes flushing the system, checking combustion performance, testing safety controls, inspecting the heat exchanger, and verifying proper venting.

Call us at 318-319-0220 today or click below to schedule service.

When to Call for Boiler Service

• The boiler is not producing heat despite the thermostat calling for it
• You hear banging, clanging, or kettling noises from the boiler
• The pressure gauge reads outside the normal operating range
• Water is leaking from the boiler, pipes, or relief valve
• Radiators or baseboards are cold in some rooms but warm in others
• The boiler short-cycles — turning on and off frequently without reaching temperature
• Your energy bills have increased without a change in usage
• The system has not been serviced in over a year

Why Choose Mark Johnson & Sons in Shreveport

• Plumbing and heating expertise — boilers are plumbing equipment, and our licensed journeymen understand both the mechanical and hydronic sides of your system
• Diagnostic accuracy — we test before we replace, so you pay for the repair that actually solves the problem
• Same-day emergency service — a heating failure in January cannot wait until next week
• Upfront pricing — we quote the repair cost before starting, with no hourly billing surprises
• Veteran-owned, family values — straightforward communication and honest recommendations since 1997
• Parts availability — our trucks carry common boiler components including circulator pumps, expansion tanks, pressure valves, and zone valve actuators

Frequently Asked Questions

How do I know if my boiler needs repair or replacement?

Boilers typically last 15 to 30 years. If yours is over 20 years old, requires frequent repairs, or has a cracked heat exchanger, replacement is usually more economical. For isolated component failures on a newer unit, repair makes sense.

What causes the banging noise in my boiler?

Kettling — a rumbling or banging sound — results from mineral scale buildup on the heat exchanger, restricting water flow and causing localized boiling. A system flush and descaling treatment usually resolves it. In severe cases, the heat exchanger may need replacement.

Is it normal for the pressure to fluctuate?

Minor pressure changes between cold and heated states are normal. If the gauge drops steadily over hours or days, you have a leak in the system. If pressure climbs above the relief valve setting, the expansion tank may be waterlogged or failed.

How often should a boiler be serviced?

Annual maintenance is recommended. Scheduling service in early fall — before Shreveport’s heating season begins — ensures your system is reliable when temperatures drop and gives time to address any issues before you need the heat.

Can you service all boiler brands?

We work on all major residential boiler brands including Weil-McLain, Burnham, Buderus, Navien, Triangle Tube, and Slant/Fin. Parts availability may vary for discontinued models, which we confirm before quoting repair.

Do many Shreveport homes still use boilers?

Boiler heating is less common than forced air in Shreveport, but homes in older neighborhoods and some newer custom builds use hydronic systems. Finding a plumber experienced with boilers can be challenging locally, which is where our team’s expertise stands out.

What should I do if my boiler is leaking?

Turn off the boiler and the water supply to it if you can locate the valve. Do not attempt to tighten fittings on a hot, pressurized system. Call us for same-day service and we will locate and repair the source of the leak safely.

Can a boiler cause carbon monoxide issues?

Gas and oil-fired boilers produce combustion gases that must vent properly. A cracked heat exchanger, blocked flue, or deteriorated venting can allow carbon monoxide to enter your home. We test combustion performance and vent integrity as part of every service call.

Why are some radiators hot and others cold?

Uneven heating usually indicates air trapped in the system, a failing circulator pump, a stuck zone valve, or a balancing issue between zones. We bleed the system, check component operation, and balance flow to restore even distribution.

Is it worth converting from a boiler to forced air?

That depends on your home’s ductwork, layout, and your preferences. Hydronic heating is quiet, produces even warmth, and avoids blowing dust. If your boiler is in good condition, maintaining it is often more cost-effective than a full HVAC conversion.

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View all plumbing services in Shreveport or explore our full Shreveport service area.

Contact Us Today

Do not spend another cold night waiting for heat that is not coming. Mark Johnson & Sons Plumbing diagnoses and repairs boiler systems throughout Shreveport with the expertise and urgency your situation demands. Call 318-319-0220 to schedule your boiler service.