COMMERCIAL AC SERVICE IN NORTH LOUISIANA

When the AC goes down at a North Louisiana business, it's not just uncomfortable — it costs you. A hot dining room clears out, a warm office kills productivity, and a sweltering shop sends customers to the competition. Mark Johnson & Sons keeps commercial cooling running with the same licensed, honest crew that North Louisiana homeowners have trusted since 1997, scaled up for rooftop units, packaged systems, and light-commercial equipment.

Commercial units live on the roof and run brutally hard through our summers, so they fail differently than a home system — and they cost real money every hour they're down. We treat that with urgency and give you a plan around your budget and your hours, not a surprise. We service restaurants, offices, retail stores, medical suites, salons, churches, and multi-unit properties, and we're comfortable being the single vendor that keeps every unit on your roof running.

What we service

• Rooftop units (RTUs) and packaged systems — the workhorses on most retail, office, and restaurant buildings
• Light-commercial split systems — for smaller suites, salons, and medical offices
• Make-up air and exhaust on restaurant kitchens where cooling and ventilation have to balance
• Multi-unit buildings and property portfolios — one point of contact for every unit on the roof
• Brands we service — Carrier, Trane, Lennox, Goodman, Rheem, York, American Standard, Bryant, and more

Repair, replace, or maintain

We handle a single emergency capacitor at 2pm on a Saturday, a full RTU changeout with crane set and curb adapter, and everything in between. For aging equipment we lay out the repair-versus-replace numbers honestly — a modern high-efficiency unit can cut a building's summer energy bill enough to pay for part of itself. And a scheduled maintenance contract catches worn belts, low refrigerant, and dirty coils in the spring, before a July heat wave turns them into a shutdown.

What Mark Johnson & Sons does differently

No subcontractors — our own licensed, uniformed, background-checked techs show up, which matters when they're on your roof and in your building around customers and staff. We schedule installs and non-emergency work around your hours, quote flat-rate before the work starts, and answer live 24/7 so a no-cooling call never sits in a voicemail box. Ask us about our service savings agreement plans for the owner's home, too — the same crew, on the same terms.