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Before a contractor can tell you whether a failed capacitor or a worn compressor is the problem, they have to work out what this system has already been through. 268 severe weather events were recorded in Franklin County, Ohio between 2015 and 2024. That kind of accumulated load does not leave one part worse off than another in a predictable way, so a repair diagnosis here starts broad: refrigerant levels, electrical components, and the condition of the coils all get checked before anything is written off as coincidence or age. A homeowner who skips that full look often pays to fix the symptom and finds the cause the following summer.
What a repair call turns up depends on what the system has been running against. Half the homes in Franklin County, Ohio were built in 1979 or earlier (2020-2024 ACS 5-year). A unit installed in that stock was dropped into conditions it did not design for: ductwork sized for earlier equipment, electrical service that was adapted rather than replaced. When a contractor opens the system, the wear they find reflects those pressures. Whether the parts that system takes are still manufactured is a separate question, and in housing of this vintage it is one worth asking before a quote goes out.
The Parts of a Central AC a Contractor Checks First
The outdoor condenser unit sits outside the house, usually on a concrete pad along an exterior wall, and it holds the compressor and the condenser coil. These are the pieces a contractor reaches first when a system stops cooling. A failed compressor, a refrigerant leak at the coil, or a seized condenser fan motor are common reasons a system runs but produces no cold air.
Inside the house, the air handler or furnace-mounted evaporator coil sits in a utility space, basement, or closet and is where the refrigerant absorbs heat from the air moving across it. A frozen coil, a clogged drain line, or a failing blower motor inside the air handler will each stop the system in its own way, and a contractor works through both the indoor and outdoor sides to find where the fault actually is.
The drawing shows the general layout of a central AC system, and a licensed contractor determines exactly which components apply to your house and its setup.
Find a contractor in Franklin CountyFranklin County, by the facts
268 severe weather events were recorded in Franklin County, Ohio 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 Franklin County, Ohio were built in 1979 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesFranklin County, Ohio holds 595,469 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 52.8% of the occupied homes in Franklin County, Ohio (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesCodes & Standards Governing Central AC Repair in Franklin County, Ohio22 sourced rules and standards
What Happens When the Contractor Comes Out
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 Franklin County, Ohio
An Ohio home construction services contract must include a copy of the supplier's certificate of insurance showing general liability coverage of not less than two hundred fifty thousand dollars.
In Ohio a home construction service means the construction of a residential building, including the repair, improvement, remodel or renovation of an existing structure, and does not include construction on a structure containing four or more dwelling units except for work on an individual dwelling unit within it.
A home construction service supplier in Ohio is defined as a person who contracts with an owner to provide home construction services for compensation and who maintains a general liability insurance policy of not less than two hundred fifty thousand dollars.
The Ohio construction industry licensing board issues state licenses to individuals as heating, ventilating and air conditioning contractors, refrigeration contractors, electrical contractors, plumbing contractors and hydronics contractors.
An Ohio board of county commissioners may accept a valid and unexpired Chapter 4740 license held by a heating, ventilating and air conditioning contractor toward its own licensing requirements for work on one-, two-, or three-family dwelling houses.
An Ohio board of county commissioners may adopt rules licensing heating, ventilating and air conditioning contractors who are not required to hold a state license under Chapter 4740.
In Ohio municipal law a specialty contractor includes heating, ventilating and air conditioning contractors, refrigeration contractors, electrical contractors, plumbing contractors and hydronics contractors.
An Ohio board of county commissioners may not register a specialty contractor who is required to hold a license under Chapter 4740 but does not hold a valid one.
An Ohio municipal corporation may not register a specialty contractor who is required to hold a license under Chapter 4740 but does not hold a valid one.
In Ohio building law a residential building means a one-family, two-family or three-family dwelling house and any accessory structure incidental to it, and does not include an industrialized unit, a manufactured home or a mobile home.
Ohio's contractor licensing chapter reaches only work on a construction project, and a construction project is defined to exclude residential buildings, so an HVAC contractor working on a one-, two-, or three-family dwelling in Ohio falls outside the state licensing requirement.
Violating Ohio's contractor licensing prohibition is a minor misdemeanor on a first violation and a misdemeanor of the fourth degree on subsequent violations.
Under Ohio law no person may act as or claim to be a type of contractor that Chapter 4740 licenses unless that person holds a license issued under that chapter.
In Ohio a home construction service supplier may not perform a home construction service costing twenty-five thousand dollars or more without entering into a written home construction services contract with the owner, unless the supplier and owner enter into a cost-plus contract.
Severe Weather Events in Franklin County
Stress on heating and cooling equipment tracks closely with what the local climate actually delivers. Repair demand in Franklin County reflects that relationship, which is why weather history belongs alongside any honest look at what drives AC wear here.
268 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.