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A contractor quoting central AC installation in Licking County works out what the system will actually run against before they settle on equipment or configuration. 180 severe weather events were recorded in Licking County, Ohio between 2015 and 2024. At that rate, severe weather is part of the normal season here, which means sizing decisions carry real consequences. A unit that fits the catalog spec but not the climate will run harder and cycle differently than the installer intended. Getting the load calculation right from the start is what a contractor in this area has to do before anything else on the job can be trusted.
Ductwork sized and routed for a furnace is a different animal than ductwork that carries conditioned air through a full cooling season, and a large share of houses in this county have the former. Half the homes in Licking County, Ohio were built in 1980 or earlier (2020-2024 ACS 5-year). A contractor quoting a central AC install here checks that existing duct network before pricing the equipment, because undersized or poorly routed runs will fight any unit you put on them. The electrical service gets the same look, since a house built well before modern central air became standard may be running a panel that was never planned for the load a new condensing unit draws.
What Gets Installed With a New Central AC
The outdoor condenser unit sits on a concrete pad outside the house and holds the compressor and condenser coil, the two components that shed heat to the outside air. Inside, the air handler or furnace-mounted evaporator coil lives in a utility space, basement, or attic and is the piece that actually cools the air passing through it.
The refrigerant line set runs between those two units, connecting the indoor coil to the outdoor condenser through a pair of insulated copper lines. A thermostat goes on an interior wall and is the control point the homeowner touches every day, telling the system when to run and when to stop.
The drawing shows a typical layout, and a licensed contractor determines exactly how each component fits into your specific home.
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180 severe weather events were recorded in Licking 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 Licking County, Ohio were built in 1980 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesLicking County, Ohio holds 73,273 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 73.7% of the occupied homes in Licking County, Ohio (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesRules & Standards Governing Central AC Installation in Licking County, Ohio22 sourced rules and standards
What the job looks like from start to finish
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 Licking 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 Licking County
Licking County's climate puts real demands on cooling equipment: heat loads shift, humidity swings, and storm activity all bear on how hard a central AC system works and how long it holds up. Sizing and installation decisions that ignore local conditions are decisions made blind.
180 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.