New Systems
Trane and Goodman AC, HVAC, and heat pump systems, sized right for coastal homes, with special financing available on select installs.
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Bay St. Louis · Since 1989
Mayo’s means comfort.
Thirty-seven years of keeping the Coast cool. Trane and Goodman systems installed right, every major brand repaired, and a certified crew that answers to your comfort.
1989On the Coast since
10 yrTrane system & parts warranty
7Coast communities served
Trane & Goodman InstallsAC RepairHeat PumpsService AgreementsFresh-Aire UV PurifiersWi-Fi ThermostatsFinancing AvailableTrane & Goodman InstallsAC RepairHeat PumpsService AgreementsFresh-Aire UV PurifiersWi-Fi ThermostatsFinancing Available
Since 1989 · 37 Years on the Coast
Trane Authorized · 10-Year Warranty
Mississippi Power Certified Dealer
Bay St. Louis · Whole Coast Served
The Shop on Ulman Avenue
On the Gulf Coast, air conditioning isn’t a luxury. It’s the difference between living here and enduring here.
Mayo’s Air Conditioning & Heating has been keeping Hancock County comfortable since 1989. We’re a Mississippi Power Certified Dealer and a Trane authorized installer, and every system we install carries a minimum 10-year system and parts warranty.
And we don’t only service what we sell. Trane, Goodman, Lennox, Carrier, American Standard, if somebody else installed it, we’ll still fix it. That’s how a shop earns 37 years of neighbors.
01
What We Do
Comfort, covered three ways.
Repair & Service
Fast repair on every major brand, plus annual service agreements with two maintenance visits a year to keep breakdowns from ever starting.
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Air Quality
Fresh-Aire UV light and activated carbon purifiers that clean the air through your whole system, plus smart Wi-Fi thermostats.
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Certified, not just experienced
Why Mayo’s
The credentials are on paper. The reputation is on porches.
Anyone can say they do good work. Mayo’s backs it up: Mississippi Power Certified Dealer, Trane authorized installer, and a 10-year system and parts warranty on every system we put in.
- Mississippi Power Certified Dealer
- Trane authorized installs with 10-year warranty
- Every major brand repaired, not just ours
02
Where We Work
Hancock County and the whole Coast.
From the shop on Ulman Avenue we cover Bay St. Louis, Waveland, Diamondhead, Kiln, Pass Christian, Long Beach, and Gulfport.
37Years in business
7Communities covered
2Visits per service agreement
10Year Trane warranty
03
Good to Know
Straight answers.
My AC quit and it wasn’t installed by Mayo’s. Will you still fix it?
Yes. We service Trane, Goodman, Lennox, Carrier, American Standard, and other previously installed systems, no matter who put them in. Call (228) 467-5975.
Is financing available on a new system?
Special financing is available on select new system installations with approved credit. Ask us when we quote your system and we’ll walk you through it.
What does a service agreement include?
Two maintenance visits a year. We inspect, clean, and tune your system before summer and winter do their worst, which is how you avoid the August breakdown.
Mayo's Air Conditioning & Heating
Mayo’s means comfort. Call today to live comfortably.
Whether it's a brand-new Trane system or a unit somebody else installed, one call gets a certified coastal HVAC crew on it.
509 Ulman Ave, Bay St. Louis · Since 1989