Serving Golden and Jefferson County
The federal minimum efficiency standards for new AC equipment changed in 2023, and they vary by region. Colorado falls in the southern efficiency region, meaning new AC installations in Jefferson County must meet the 15 SEER2 minimum — not the 14 SEER2 that applies in northern states. Higher-efficiency equipment costs more upfront but reduces operating costs over the system's life. In Golden's climate with its extended cooling season, the payback on higher SEER2 equipment comes faster than it would in a market with a shorter AC season.
Homeowners in Jefferson County can't prioritize one HVAC system over the other. Furnace neglect creates heating season risk. AC neglect creates summer breakdown risk. The lowest long-term HVAC costs in Golden belong to homeowners who treat both systems as requiring annual attention.
The combination of 1,600 annual cooling degree days and 5,700 heating degree days means Golden homeowners depend on both systems across the year. Jefferson County's housing stock, with a median construction year around 1981, contains a large inventory of equipment due for evaluation or replacement.