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Sizing a central AC system here starts with understanding what the compressor is actually asked to do each year. Homes in Northeastern Connecticut Planning Region, CT run cooling about two months a year, from July through August. After standing off through fall, winter, and spring, the compressor, condenser fan, and contactor all restart into the first real heat before anyone has confirmed they are ready. A contractor quoting an installation in this region prices for a system that will sit dormant far longer than it runs, and a unit undersized for peak July demand has nowhere to hide when that demand arrives all at once.
Ductwork sized for an older system is what a contractor runs into here and has to assess before anything else on an installation job. Half the homes in Northeastern Connecticut Planning Region, Connecticut were built in 1973 or earlier (2020-2024 ACS 5-year). That means the ducts in a typical house in this region were designed around equipment that bore little resemblance to what gets installed today, and a new unit pushing more air through passages built for less will either underperform or drive up the scope of the job. An electrical service from that same era carries its own questions about whether it handles the load a modern compressor draws. The equipment a homeowner picks matters, but what the house already has in its walls and ceilings is what sets the terms.
What Gets Installed With a New Central AC
The outdoor condenser unit sits outside the house, usually on a concrete pad at ground level, and holds the compressor and the condenser coil. Inside, the air handler mounts in a utility space, a basement, or an attic and contains the evaporator coil and the blower that moves air through the home.
The thermostat goes on an interior wall where it reads the temperature of the living space and signals the system to run. A condensate drain line runs from the air handler to a nearby drain, carrying away the moisture the coil pulls from the air as it works.
The drawing shows a typical layout, and a licensed contractor determines exactly how the system comes together in your house.
Find a contractor in Northeastern Connecticut Planning RegionNortheastern Connecticut Planning Region by the Numbers
Half the homes in Northeastern Connecticut Planning Region, Connecticut were built in 1973 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesNortheastern Connecticut Planning Region, Connecticut holds 41,736 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 77.3% of the occupied homes in Northeastern Connecticut Planning Region, Connecticut (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesCodes & Standards Governing Central AC Installation in Northeastern Connecticut Planning Region, Connecticut9 sourced rules and standards
What HVAC Installation Looks Like in Northeastern Connecticut
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 Northeastern Connecticut Planning Region, Connecticut
Connecticut requires a state licence to perform, or to advertise, heating, piping and cooling work: no person may practise an occupation this chapter covers without first obtaining one.