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New homes and rebuilds

New construction HVAC in Miami, FL

A new home in Miami only gets one chance to have its ductwork designed right. Load calculations and duct design done at the start prevent the hot rooms and humidity problems that are hard to fix later.

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We repair and install Carrier, Trane, Lennox, Daikin, Mitsubishi Electric and every other major brand found in Miami homes.

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Quick answer

New construction HVAC covers load calculations, equipment selection, duct design and installation for new homes, rebuilds and large additions in Miami-Dade. We work with owners and builders from rough-in to final inspection, sizing the system for humidity control as well as cooling.

Written by Sylvia Denton, HVAC Guides Editor. Updated 2026-09-22.

Many comfort complaints in new homes trace back to equipment sized by rule of thumb and ducts laid out without a design. Oversized systems cool fast but leave homes damp; poorly designed ducts leave rooms uneven.

A proper Manual J load calculation and duct design account for the home's orientation, windows, insulation and Miami's humidity.

We coordinate with builders and owners on rough-in, set equipment, connect controls and handle the mechanical permit and inspections.

Cutaway illustration style photo of a Miami CBS home showing an outdoor condenser
Pricing

What new construction HVAC costs in Miami

$450 to $1,200Load calculation and design

Per home.

$12,000 to $18,000Complete system, smaller home

Ducts and equipment.

$18,000 to $32,000Complete system, larger home

Multiple systems or zoning.

$6,500 to $14,000Addition system

Depends on size.

$2,800 to $8,500Ventilation and dehumidification

Recommended for tight homes.

Typical 2026 Miami-Dade ranges, not a quote. Plans, size and efficiency level drive pricing.

Benefits

What design-first HVAC delivers

  • Even temperatures room to room
  • Proper humidity control
  • Quieter airflow
  • Lower energy use
  • Fewer return visits after move-in
Process

How a new construction HVAC project runs

  1. 1

    Review plans

    Plans and specifications reviewed.

  2. 2

    Load calculation

    Room-by-room loads calculated.

  3. 3

    Design ducts

    Duct sizing and layout designed.

  4. 4

    Rough-in and set

    Ducts installed and equipment set.

  5. 5

    Start up and inspect

    System commissioned and permit closed.

Local context

New construction in Miami-Dade

New homes are going up from Homestead and Florida City to Doral and western Kendall, and older lots are being rebuilt across Coral Gables, Miami Shores and Westchester.

Florida's energy code and modern building practices make homes tighter, which raises the importance of humidity control and ventilation.

Getting the design right at rough-in is far cheaper than fixing comfort problems after drywall.

Close detail photo for central air conditioning in a Miami property: technicians hands at the permit step

Where we handle this service

See every Miami-Dade community we cover
FAQ

New construction HVAC questions

Why does a new Miami home need a load calculation?

It sizes equipment to the actual home so it controls humidity and cools evenly.

Can you work with my builder?

Yes. We coordinate rough-in and inspections with builders and owners.

What size AC does a new Miami home need?

It depends on the load calculation, not square footage alone.

Should a new home include dehumidification?

Tight new homes often benefit from it in Miami's climate.

Do you handle permits for new construction HVAC?

Yes, including inspections through final.

Also in AC Installation and Replacement

Related services

Central Air Conditioning

Split systems for CBS homes, townhomes and larger condos.

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Duct Design for Additions

Extending supply and return to new rooms correctly.

Learn more

HVAC Zoning Systems

Dampers and thermostats for even room-by-room comfort.

Learn more

Building or rebuilding in Miami?

Call to plan the HVAC before rough-in.

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