Why altitude matters for a Hestan gas cooktop
At roughly 5,350 feet, Littleton's thinner air changes how much oxygen reaches a gas flame. Hestan's sealed burners are jetted for efficiency, so a unit installed without altitude adjustment can burn yellow, soot the pan bottoms, or nuisance-trip the flame sensor. This is not a defect, it is calibration.
When we service a Hestan gas cooktop here, we check the orifice sizing, air-shutter setting, and the re-ignition module together. Colorado's dry air also hardens burner-cap seals and igniter boots faster than at sea level, so we inspect those on every gas visit rather than only chasing the reported symptom.