Miami — Tier-1 Pillar

Miami HVAC + Dehumidification — Right-Sizing, Carrier vs Trane vs Lennox, Salt-Air

Miami HVAC reality. Manual J sizing critical (oversize = humidity problems), salt-air-rated coastal units, whole-home dehumidification for tropical climate, mini-split for additions, typical SEER2 15.2+ required. $12K-$48K typical.

~1 min read·Updated 2026-04-23

Miami HVAC fails when oversized. An oversized system short-cycles, doesn't run long enough to dehumidify, and leaves the house cold-but-clammy. Manual J load calculation is the difference. Salt-air-rated coastal units (Carrier Performance Coastal, Trane XV18 Coastal) last 10-14 years oceanfront vs 7-10 for standard. SEER2 15.2+ is the current Florida minimum post-2023 DOE update.

Frequently asked questions

Why is right-sizing critical in Miami? Tropical humidity requires long run-times to dehumidify. Oversized systems cycle off before pulling enough moisture, leaving indoor RH at 60-70% — mold territory.

Salt-air rated HVAC for Miami? Yes if within ~1 mile of saltwater. Coastal-rated coils and cabinet coatings extend life 40-60%.

How much does a Miami HVAC install cost? 3-ton single-system replacement: $8K-$14K. 4-5 ton high-SEER with coastal rating: $14K-$22K. Multi-zone VRF for 3500+ sqft: $28K-$48K.

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“A string of bright beads of sunlight, breaking through the valleys along the moon’s rim.”

— Francis Baily, 1836

Origin

Who is Baily?

Baily is named after Francis Baily — an English stockbroker who retired at 51, became an astronomer, and in 1836 described something on the edge of a solar eclipse that nobody had properly articulated before: a string of bright beads of sunlight breaking through the valleys along the moon’s rim.

He wasn’t the first to see them. Edmond Halley saw them in 1715 and barely noticed. Baily’s contribution was clarity — describing exactly what was happening, in plain language, so vividly that the whole field of astronomy paid attention. The phenomenon is still called Baily’s beads.

That’s what we wanted our AI to do. Every inbound call and text has signal in it — a homeowner’s real question, a timeline, a budget, a hesitation that means “yes but.” Baily listens to every one, 24/7, and finds the beads of light.

Baily was a businessman before he was a scientist. That’s our vibe too.

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