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A contractor diagnosing a central AC system in Martin County starts with the compressor's age and service history, because those are what the record points to. 63 severe weather events were recorded in Martin County, Florida between 2015 and 2024. At that rate, severe weather here is an occasional event rather than a steady grind on equipment, which means a refrigerant leak or a failing capacitor traces back to years of heat cycling and deferred maintenance far more often than to storm exposure. A contractor who chases storm damage first will quote the wrong repair.
Ductwork in a house built for an earlier generation of equipment has usually been patched, rerouted, or left as-is through several rounds of replacements. Half the homes in Martin County, Florida were built in 1986 or earlier (2020-2024 ACS 5-year). That history matters when a system fails: the unit a contractor opens may be a generation or two newer than the house around it, but if the refrigerant circuit or compressor board it takes has been discontinued, the repair bill changes. What a contractor quotes depends less on the age stamped on the air handler than on whether the part that failed is still in production.
The Parts of a Central AC a Contractor Checks First
The outdoor condenser unit sits outside the house, usually on a concrete pad beside the foundation, and it holds the compressor and condenser coil. These are where a contractor starts when the system stops cooling. A failed compressor, a refrigerant leak at the coil, or a burned-out capacitor in that cabinet accounts for a large share of repair calls.
Inside the house, the air handler sits in a closet, attic, or utility space and pushes conditioned air through the home. The evaporator coil rides inside or just above that cabinet, and the expansion valve and the blower motor sit nearby. A frozen coil, a clogged drain line, or a failing blower motor are common findings in that section of the system.
The drawing shows a typical layout, and a licensed contractor determines which parts apply to your specific house and what work each one needs.
Get matched in Martin CountyMartin County, Florida, by the numbers
63 severe weather events were recorded in Martin 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 Martin County, Florida were built in 1986 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesMartin County, Florida holds 83,121 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 79.6% of the occupied homes in Martin County, Florida (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesCodes & Standards Governing Central AC Repair in Martin County, Florida9 sourced rules and standards
What HVAC Repair Looks Like in Martin 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.
Licensing and Legal Requirements in Martin County, Florida
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 Martin County
Florida weather puts real strain on cooling equipment, and Martin County has its own record of what the skies deliver. That record shapes how hard local systems work and how often repair needs come up.
63 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.