AC INSTALLATION & REPLACEMENT IN NORTH LOUISIANA

A new air conditioner is only as good as the crew that installs it. In North Louisiana's long, humid summers, an oversized unit short-cycles and leaves the house cold and clammy, while an undersized one runs nonstop and never catches up. Mark Johnson & Sons sizes every system with a Manual-J load calculation built on your actual square footage, insulation, windows, ductwork, and sun exposure — not a rule of thumb off the old unit's label.

We install and replace central AC systems, heat pumps, and ductless mini-splits across every efficiency tier, from a code-minimum 14.3 SEER2 unit to high-efficiency 18+ SEER2 systems that cut a Louisiana summer electric bill. We've done it since 1997 with our own licensed crew — no subcontractors — and every quote is flat-rate and given before we start, with financing available so a dead AC doesn't have to wait on the budget.

What we install

• Central AC (split systems) — matched condenser, coil, and air handler from Carrier, Trane, Lennox, Goodman, Rheem, York, American Standard, Bryant, and Amana
• Heat pumps — cool and heat from one system, efficient through mild North Louisiana winters
• Ductless mini-splits — Daikin and Mitsubishi single- and multi-zone for additions, shops, and rooms that never stay comfortable
• Full-system replacements — condenser, coil, line set, thermostat, and duct transitions done as one job

14 SEER2, 16 SEER2, or 18+?

14.3 SEER2 meets Louisiana code and is the budget pick — a solid, reliable single-stage system at the lowest upfront cost. 16 SEER2 is the sweet spot for most homes here: a real efficiency bump for a moderate price jump, with a two-stage compressor that pulls humidity out better. 18+ SEER2 with a variable-speed compressor runs the quietest, holds humidity down best, and pays back fastest given how many hours an AC runs in this climate. We show you the payback math for your actual home and let you pick — no pressure to buy up.

What Mark Johnson & Sons does differently

Old-unit removal, a properly pulled vacuum, a matched coil, a code-compliant line set, permit, inspection, and haul-off are all part of the job — not add-ons that show up later. We commission every install: verify airflow, charge to spec, confirm the temperature drop across the coil, and register the manufacturer warranty so it stays valid. Ask about our Classic Membership — it keeps the new system tuned every Spring and Fall and protects that warranty.