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A contractor quoting a central AC installation in Pasco County has to account for what the existing system actually went through, not just the square footage of the house. 76 severe weather events were recorded in Pasco County, Florida between 2015 and 2024. At that rate, severe weather is an occasional event here rather than a standing condition, which means it rarely drives the sizing conversation. What does drive it is the baseline cooling load, the quality of the ductwork, and how the previous system was installed. A contractor who blames the old unit on storm wear is almost certainly looking past the real answer.
Ductwork laid down for an older system carries assumptions about airflow, return sizing, and routing that a new central AC unit does not share. Half the homes in Pasco County, Florida were built in 1992 or earlier (2020-2024 ACS 5-year). A contractor quoting an installation here has to assess what those ducts will actually do under a modern load before the equipment choice means anything. If the existing runs are undersized or poorly connected, the install scope changes. The electrical panel gets the same scrutiny, since older service may not meet what a new unit draws. The house decides the job before the equipment is ever ordered.
The Parts of a Central AC System Being Installed
The outdoor condenser unit sits on a concrete pad beside the house and holds the compressor and condenser coil, the two components that do the heaviest work in the system. Inside, the air handler or furnace cabinet stands in a utility closet, basement, or attic and houses the evaporator coil and the blower that moves air through the home.
The thermostat mounts on an interior wall and gives the homeowner control over the whole system. Refrigerant line sets run between the indoor and outdoor units, and a condensate drain line carries moisture out of the air handler to a floor drain or to the outside.
The drawing shows a typical layout, and a licensed contractor determines exactly what goes where based on the specifics of your house.
Get matched in Pasco CountyPasco County, by the numbers
76 severe weather events were recorded in Pasco County, Florida between 2015 and 2024.
NOAA National Centers for Environmental Information, Storm Events Database, bulk CSV export, events 2015-01-01 through 2024-12-31.Half the homes in Pasco County, Florida were built in 1992 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesPasco County, Florida holds 271,844 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 75.7% of the occupied homes in Pasco County, Florida (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesCodes & Standards Governing Central AC Installation in Pasco County, Florida9 sourced rules and standards
What HVAC Installation Looks Like in Pasco County
Split-system central air conditioners rated below 45,000 Btu/h manufactured on or after January 1, 2023 must meet a federal minimum of 13.4 SEER2.
Split-system central air conditioners rated at or above 45,000 Btu/h manufactured on or after January 1, 2023 must meet a federal minimum of 13.4 SEER2.
Split-system central air conditioners manufactured between January 1, 2015 and December 31, 2022 had to meet 13 SEER, the metric that preceded SEER2.
Single-package central air conditioners manufactured on or after January 1, 2023 must meet a federal minimum of 13.4 SEER2.
Space-constrained central air conditioners manufactured on or after January 1, 2023 must meet a federal minimum of 11.7 SEER2.
Federal efficiency standards for split-system central air conditioners and heat pumps are set on each certified combination of outdoor unit and indoor coil rather than on the outdoor unit alone.
Residential and light commercial air conditioning and heat pump systems assembled in the field, including mini-splits and unitary systems, may not be installed on or after January 1, 2025 using a refrigerant with a global warming potential above 700.
A field-assembled system whose specified components were all manufactured or imported before January 1, 2025 carries no installation compliance date under the refrigerant restrictions and may still be installed.
What Pasco County and Florida Require for HVAC Installation
Florida requires a person to be certified or registered in order to engage in the business of contracting in the state.
Severe Weather Events in Pasco County
Weather places a measurable load on central AC equipment, and Pasco County's climate is part of what determines how hard a system has to work and how long it holds up. That load is a local fact, and sizing or installing equipment without accounting for it produces the wrong result.
76 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.