RADIANT & IN-FLOOR HEATING SERVICE IN NORTH LOUISIANA

Radiant heating warms your home from the floor up instead of blowing hot air through vents. Heated water (or, in some systems, electric mats) runs through tubing under the floor, so the warmth is even, quiet, and draft-free — no cold spots, no dust getting kicked around, no whoosh of a furnace fan. For bathrooms, additions, sunrooms, and whole-home comfort, it's one of the nicest ways to heat a space.

In North Louisiana our winters are mild, which actually plays to radiant heat's strengths: it delivers steady, gentle warmth without the blast-and-cool cycle of forced air, and it pairs beautifully with the tile and concrete floors that stay cool in our long, humid summers. Mark Johnson & Sons designs, services, and repairs radiant systems across Ruston, Monroe, West Monroe, Shreveport, Bossier City, and Grambling. Every quote is flat-rate and given before we touch a tool, and the service call is waived when you have us do the repair.

What we service

• Hydronic (hot-water) radiant — PEX floor loops fed by a boiler or water heater, the most common in-floor system
• Electric radiant mats — under-tile heating in bathrooms and additions
• Manifolds and zones — zone valves, actuators, balancing valves, and the manifold assembly itself
• Circulation and pressure — circulator pumps, expansion tanks, air separators, and leak tracing

Repair vs. new install

Most radiant service calls are a single cold zone, a stuck valve, trapped air, or a slow pressure drop — affordable, targeted repairs, not whole-system failures. A properly installed loop can outlast the house; it's the manifold, valves, circulator, and heat source that need attention over the years. When you're adding radiant to a remodel or new slab, we design the zones and manifold around your floor construction and heat source and give you a real number before we start.

What Mark Johnson & Sons does differently

Because we're a combined plumbing and heating company, hydronic radiant work is right in our wheelhouse — it's manifolds, zone valves, circulators, and PEX as much as it is heat, and most HVAC-only shops don't touch it. We trace leaks without tearing up the whole floor, bleed and balance every zone so the warmth is even, and confirm pressure holds before we leave. Every tech is on our payroll, no subcontractors.

Ask about our service savings agreement plans — the seasonal heating tune-up folds in a check of your loop pressure, circulator, and zones, plus you get 15% off any repair.