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Sizing central AC for a home here starts with an uncomfortable question: what load is this system actually being sized for. Homes in Conejos County, CO have essentially no cooling season — no month of the year is warm enough to call for it. A compressor installed in this county may sit idle through every month of the year, and long dormancy carries its own set of failure risks. Contactors corrode. Refrigerant seals dry out. The first time a homeowner switches the system on, the equipment has had no chance to prove itself through ordinary use. A contractor quoting an install here builds the case on design conditions and worst-case scenarios rather than on a season that regularly stress-tests what they put in.
Ductwork sized for an older heating system does not automatically carry a central AC unit without adjustment. A contractor installing central air has to assess what the existing ducts can actually move before anything else on the job gets priced. Half the homes in Conejos County, Colorado were built in 1982 or earlier (2020-2024 ACS 5-year). That share of the housing stock was built around duct layouts designed for something other than a modern split system, and a new unit connected to undersized or poorly routed runs will underperform regardless of its efficiency rating. The electrical service gets checked alongside it, because the draw of a new condenser has to match what the panel can supply.
What a Central AC Installation Covers
The outdoor condenser unit sits on a concrete pad beside the house and holds the compressor and condenser coil, the two components that do the heaviest work in the system. Inside, the air handler or furnace cabinet stands in a utility space, a basement, or a closet and carries the evaporator coil, which is where the system pulls heat out of the air moving through your home.
The thermostat mounts on a wall in the living area and gives you control over the whole system. Refrigerant line sets run between the indoor and outdoor units, and a condensate drain line carries moisture away from the evaporator coil to a floor drain or to the outside.
The drawing shows the general layout of a central AC system, and a licensed contractor determines what that layout looks like in your specific house.
Get matched in Conejos CountyConejos County by the Numbers
161 severe weather events were recorded in Conejos County, Colorado 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 Conejos County, Colorado were built in 1982 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesConejos County, Colorado holds 4,106 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 76.5% of the occupied homes in Conejos County, Colorado (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesCodes & Standards Governing Central AC Installation in Conejos County, Colorado8 sourced rules and standards
What AC Installation Looks Like in Conejos 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.
Severe Weather Events in Conejos County
Weather conditions in Conejos County place real demands on heating and cooling equipment over its lifetime. A system sized and installed for the local climate handles those demands better than one that was not.
161 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.