Central Air Installation in Liverpool, Listed by the Village
Cooling is named on this village's permit list in its own right, which is rare in the county and worth knowing before anyone starts work.
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What to fix before a Liverpool cooling installation starts
On the equipment itself, the decision that changed most recently is the refrigerant. Manufacture and sale of residential systems using refrigerants above the global warming potential limit stopped on January 1, 2025 under 40 CFR 84.54, so new systems now ship on R-454B, R-32 and similar, while EPA's final rule effective July 27, 2026 removed the installation deadline for equipment made before that date. Both are genuinely on the table, so it is a decision rather than a deadline. What is not negotiable is the size: ask what load the tonnage came from, because a unit that cannot run long enough leaves a house cold and damp rather than cool and dry.
The permit comes before the work
The village states that no person shall commence work requiring a permit until the Code Official has issued it, and it names central air conditioning on that list.
Which refrigerant the proposal names
New equipment now ships on R-454B, R-32 and similar. Pre-2025 stock remains installable, so ask which one you are being offered and why.
The outdoor unit alone is a question, not an offer
EPA lists the current refrigerants for new equipment only and defines new equipment as a completely new circuit with a new compressor, evaporator and condenser.
Where central air sits on the Village of Liverpool permit list
The Village of Liverpool states that it uses the most recent edition of the New York State Uniform Code and that a building permit is required for any work which must conform to the Uniform Code, the Energy Code and the Village Zoning Ordinance. Its published list of such work names installation of any gas lines or appliance including space heaters, and installation of any new or replacement furnace, central air conditioning, boiler, gas fireplace or other heating equipment. The village publishes a separate HVAC Permit Application, Mechanical Permit Application and Heating Appliance and Chimney Application. It states that no person shall commence any work for which a building permit is required without first having obtained one from the Code Official.
Source: Village of Liverpool, New York, Building Safety and Code Enforcement, accessed 2026-09-14
The federal rule that changed residential air conditioning is 40 CFR 84.54. Paragraph (a)(1) makes it effective January 1, 2025 for self-contained residential and light commercial air conditioning and heat pump products using a regulated substance, or a blend containing one, with a global warming potential of 700 or greater. Paragraph (c)(1) does the same from the same date for residential or light commercial air conditioning or heat pump systems above that same 700 limit, except variable refrigerant flow systems. The restriction in paragraph (a) is on manufacture, import, sale, distribution and export of the product, and the restriction in paragraph (c) is on installing a new system.
Source: 40 CFR 84.54(a) and (c), Restrictions on use of regulated substances, Technology Transitions under the American Innovation and Manufacturing Act of 2020, via the Electronic Code of Federal Regulations, accessed 2026-09-14
EPA's summary of its final rule at 91 FR 31284 states that it allows the inventory of residential and light commercial air conditioning and heat pump equipment that was manufactured in the United States or imported into the United States before January 1, 2025, to continue to be installed. The list of changes the rule makes puts it as removing the installation deadline for systems in the residential and light commercial air conditioning and heat pumps subsector, where all specified components of such systems were domestically manufactured or imported before January 1, 2025. The rule is effective July 27, 2026.
EPA listed R-32, R-452B, R-454A, R-454B, R-454C and R-457A for residential and light commercial air conditioning and heat pumps subject to use conditions, and the first use condition is new equipment only. EPA writes that these refrigerants may be used under the SNAP program only in new equipment designed to address concerns unique to flammable refrigerants, that this listing does not allow these substitutes to be used as a conversion or retrofit refrigerant for existing equipment, and that none of these substitutes are being listed for use as a conversion or retrofit refrigerant for existing equipment. A footnote defines new equipment as a completely new refrigeration circuit containing a new compressor, evaporator, and condenser.
Source: US Environmental Protection Agency, Protection of Stratospheric Ozone: Listing of Substitutes Under the Significant New Alternatives Policy Program, final rule, 86 FR 24444, May 6, 2021, accessed 2026-09-14
What central air installation involves
Cooling named in its own right on the Liverpool list
Most municipalities around here write their permit lists around heating appliances and solid fuel devices and leave cooling unmentioned, so a homeowner adding air conditioning has to telephone and ask. Liverpool prints it: installation of any new or replacement central air conditioning appears on the village's published list of work requiring a building permit, next to furnaces, boilers and gas fireplaces. That has a practical effect beyond the form. The village states that no work may begin before the Code Official has issued the permit, so the paperwork sits in front of the installation date rather than beside it, and the job is inspected by somebody who does not work for the installer.
Sort the permit and the refrigerant in one conversation
Send the Liverpool address and we will arrange quotes that name both without being chased.
Cooling questions from Liverpool homeowners
Someone told me I have to install before a refrigerant deadline. Is that true?
There is no such deadline for installation. EPA's final rule effective July 27, 2026 allows inventory manufactured or imported before January 1, 2025 to continue to be installed. Manufacture of the higher global warming potential residential systems stopped on that date, which is a different thing from a clock running against you.
Does the village really want a permit for air conditioning?
Its published list names installation of any new or replacement central air conditioning among the work requiring a building permit, which is unusual in this county. What that means for your particular job is the Code Official's call, so ask the village and have the answer written into the quote.
Tell us what the house does in August
That, and whether there are usable ducts, is what decides the shape of a Liverpool cooling job.