📍 BAY ST. LOUIS · AC INSTALLATION

AC Installation in Bay St. Louis, MS

Rheem Triple Diamond installs. Proper sizing. Coastal-grade equipment. 10-year parts warranty. Serving Bay St. Louis and surrounding Hancock County neighborhoods, same-day, real Keith's tech, no distance surcharge.

Bay St. Louis to Saucier is ~42 minutes. Same-day, every time.

📞 CALL BAY ST. LOUIS · (228) 265-8609
★ 4.9 · 1609 reviews · BBB A+ · MS Mechanical Contractor #R19061 · ZIP: 39520

AC INSTALLATION IN BAY ST. LOUIS · WHY LOCALS CALL KEITH'S

Rheem Triple Diamond for 7 years running. Proper Manual-J sizing. Full-system installs finished in one day. That standard applies whether you're in Old Town, Bay-Waveland Beach, or anywhere else in Bay St. Louis.

Bay St. Louis and neighboring Waveland/Diamondhead form the western edge of our service area. Old Town homes are historic with retrofitted HVAC. Diamondhead is a mix of golf-community standard residential and larger estates. Distance-wise it's our farthest regular service area, but we don't charge extra for the drive. Storm rebuild age systems are the primary replacement demand.

AC Installation in Bay St. Louis covers these ZIP codes: 39520. We service homes near Old Town Bay St. Louis, Bay Waveland Yacht Club, Diamondhead, and every neighborhood between.

01 SIGNS · IN YOUR BAY ST. LOUIS HOME

BAY ST. LOUIS HOMEOWNERS
CALL WHEN THEY SEE:

System is 12+ years old and repairs keep stacking
Bills climbing every summer even after a service call
One room always too hot or too cold
R-22 (Freon) system that can't be recharged anymore
Rooms with no ductwork you want to condition (mini split)
Just bought the house and inherited a mystery system

any of those in Bay St. Louis? call now →

CALL FROM BAY ST. LOUIS · (228) 265-8609

AC INSTALLATION PRICING
IN BAY ST. LOUIS, MS

Same rates in Bay St. Louis as everywhere else on the Coast. No distance charges, no city-based markup.

Typical Range $5,800 to $14,500 depending on tonnage, efficiency, and ductwork
Standard 3 Ton Replacement $6,400 to $8,900
High Efficiency 3 Ton $9,200 to $12,800
Full System With Ductwork $11,000 to $16,000
Mini Split Single Zone $4,200 to $6,800
Mini Split Multi Zone $8,500 to $18,000
Financing Note 0% and low-APR through Service Finance, FTL Finance, Synchrony. Approved credit.

BAY ST. LOUIS AC INSTALLATION
QUESTIONS ANSWERED.

How do you decide what size system I need?

We run a Manual-J load calculation on your home: insulation, window count and orientation, ductwork condition, air infiltration, occupancy. Not square-footage guesswork. Oversized systems short-cycle and destroy comfort in Gulf humidity. Right-sized wins.

Why Rheem?

We've been a Rheem Triple Diamond Dealer for 7 years straight. Their warranties, parts availability, and coastal-corrosion coatings hold up on the Coast better than most. We install Lennox, Trane, Daikin, Mitsubishi mini splits, and Carrier too when the customer prefers.

What's included in the install price?

Equipment, install labor, all electrical and refrigerant line connections, condensate line, disposal of the old system, permit, city inspection scheduling, refrigerant charge, thermostat, commissioning, and a 10-year manufacturer parts warranty plus 1-year labor. No surprise fees.

How long does the install take?

Standard replacement: one day. Full system with new ductwork: two days. Mini split: half day to one day depending on zone count.

Do I need to be home?

For the initial hour and the walkthrough at the end, yes. The middle 4-6 hours our crew works independently. We're W-2 employees, background checked, uniformed, drug tested.

See Full AC Installation Info →

OTHER SERVICES IN BAY ST. LOUIS.

AC Repair in Bay St. Louis → Heating Repair in Bay St. Louis → Mini Split Systems in Bay St. Louis → Commercial HVAC in Bay St. Louis →

BAY ST. LOUIS · AC INSTALLATION
CALL NOW.

Answered 24/7 · Same-day to Bay St. Louis · No distance surcharge

📞 CALL (228) 265-8609

Bay St. Louis · don't sweat the heat, call keith!