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A heat pump running through a long Colorado heating season puts its refrigerant circuit, reversing valve, and compressor under sustained cycling load. Homes in Dolores County, CO run heat about ten months a year, from September through June. Cold winters push the outdoor unit to extract heat from air that fights back hard, and capacity drops as temperatures fall, which means the compressor works harder at the moments it can least afford to. A contractor diagnosing a fault in this county looks at refrigerant charge and reversing valve function early, because those are the components that carry the heaviest share of the heating load and give out first when they have been asked to work close to their limits.

Ductwork routed and electrical service sized for an earlier generation of heating equipment shapes what a contractor finds once a heat pump is open for repair. Half the homes in Dolores County, Colorado were built in 1980 or earlier (2020-2024 ACS 5-year). That history means the repair itself can be straightforward while the surrounding infrastructure adds complications: wiring gauge, breaker sizing, and line sets that were adapted rather than replaced when the system changed. A contractor opening a heat pump here checks those conditions before pricing parts, because what the unit needs and what the house currently delivers are not always the same thing.
The Parts of a Heat Pump a Contractor Checks First

The outdoor unit is the piece most homeowners recognize on sight. It sits outside on a pad or bracket and holds the compressor and the outdoor coil. In a repair call, these are the first things a contractor opens up, because a failing compressor or a damaged coil will stop the whole system cold.
Inside the house, the air handler moves conditioned air through the home and holds the indoor coil and the blower. The refrigerant lines run between the two units, and the reversing valve inside the system is what lets a heat pump shift between heating and cooling. Any of these can be the source of a problem.
The drawing shows the general layout of a heat pump system, and a licensed contractor determines which parts apply to your specific home and situation.
Get matched in Dolores CountyDolores County, by the numbers
143 severe weather events were recorded in Dolores 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 Dolores County, Colorado were built in 1980 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesDolores County, Colorado holds 1,572 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 81.3% of the occupied homes in Dolores County, Colorado (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesSevere Weather Events in Dolores County
Extreme weather puts heat pumps under sustained load, and load is what reveals weak points in the system. How hard the equipment has worked over the years is a local fact, and repair needs in Dolores County follow from it.
143 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.
