Florida Manual-J-Lite

AC Size / BTU Calculator for Broward County Homes

What size AC do I need for a Broward County home?

A rough Broward County AC sizing estimate starts with square footage, then adjusts for ceiling height, insulation, sun exposure, glass, and humidity load. This calculator produces a BTU and tonnage planning range; Abraham AC should still confirm final sizing with an in-home load review before replacement.

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South Florida home cutaway with airflow paths for an AC size and BTU calculator. — What size AC do I need for a Broward County home?

Calculator Inputs

Estimated BTU = conditioned square feet x Florida load factor x ceiling, insulation, sun, and window multipliers, plus extra occupant load.

Conditioned square footage

sq ft

Average ceiling height

Insulation and air sealing Sun exposure Glass and sliders Usual occupants

people

Right-size the AC before shopping by tonnage

Square footage is only the first input for a Broward County sizing conversation. Ceiling height, attic heat, west-facing glass, concrete block construction, shade, duct leakage, and return air can all move the final load up or down.

The calculator gives a BTU and tonnage planning range so homeowners can ask better questions before a replacement estimate. Abraham AC still needs to confirm the final equipment match inside the home, especially when humidity, hot rooms, or short cycling are already showing up.

Use the BTU result as a planning range, not a final equipment order.
Ask whether ducts and return air can support the proposed tonnage.
In South Florida, avoid oversizing that cools quickly but leaves humidity behind.

Local sizing signals that change the answer

A shaded Plantation home, a sunny Weston two-story, and a Fort Lauderdale condo with large sliders can need different cooling capacity even at the same square footage. That is why the page weighs sun, glass, insulation, ceiling height, and occupancy instead of using a single national chart.

If the old AC never handled humidity well, do not assume the old model number is the right target. Compare the old tonnage with measured comfort symptoms and the calculator result before the installation scope is approved.

Large sliders and afternoon sun usually increase the planning load.
Low runtime and sticky air can point to oversizing or airflow trouble.
Final sizing should include the home, ducts, windows, and latent moisture load.

Broward HVAC Answers This Calculator Supports

Local answer target

Should square footage alone decide AC size in Broward County?

No. Square footage is the starting point, but Broward sizing also depends on ceiling height, attic heat, west-facing glass, insulation, return air, duct leakage, occupancy, and humidity load.

Next step: Use the BTU result to ask whether the duct system can support the proposed tonnage.

Local answer target

Why can too much tonnage make a Florida home feel sticky?

An oversized AC can satisfy the thermostat before it runs long enough to remove moisture. That can leave rooms cool but humid, especially in shaded homes, condos, and houses with weak airflow.

Next step: Compare the calculator output with comfort symptoms before approving equipment.

Local answer target

What should Abraham AC confirm after the BTU estimate?

The final recommendation should confirm ducts, return-air path, outdoor-unit location, electrical details, drain safety, filter restriction, and whether a load review points to repair, duct work, or replacement.

Next step: Schedule an in-home sizing review when the number points to a replacement conversation.