Serving Navajo Mountain and San Juan County
An AC system operating with even a 10 percent refrigerant undercharge can see a 20 percent reduction in cooling capacity and a measurable increase in energy consumption. In San Juan County, where AC systems run under sustained load, this degradation compounds across the cooling season — increasing utility costs while reducing system lifespan. Refrigerant charge verification using superheat and subcooling measurements, not just pressure gauges, is the standard that separates thorough HVAC maintenance from a check-the-box service call.
Homeowners in San Juan 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 Navajo Mountain belong to homeowners who treat both systems as requiring annual attention.
The combination of 1,740 annual cooling degree days and 5,120 heating degree days means Navajo Mountain homeowners depend on both systems across the year. San Juan County's housing stock, with a median construction year around 1977, contains a large inventory of equipment due for evaluation or replacement.