September or early October — before the first cold snap. Booking a furnace tune-up in November when it's already -5°C means waiting behind the emergency no-heat calls. We recommend spring (April-May) for AC tune-ups for the same reason.
Why annual maintenance
One tune-up costs less than one repair
The math on annual HVAC maintenance is straightforward: a tune-up in Las Vegas runs $149-$189 per system. A single emergency service call — typical bad-capacitor or ignitor replacement — runs $350-$550 including the diagnostic and parts. One capacitor caught during a tune-up before it fails saves more than the tune-up cost.
Beyond cost, the manufacturer parts warranty on most new furnaces, AC units and heat pumps REQUIRES annual maintenance by a licensed technician. Skip a year, and a warranty claim on a 6-year-old compressor can be denied because you can't produce service records. The maintenance plan keeps the paperwork current automatically.
For rental properties and small commercial spaces we run quarterly filter changes plus twice-a-year inspections. Property managers get a shared portal with the service history for each address. Related in Las Vegas: furnace installation and furnace repair.
$149-$189
Annual tune-up
$350-$550
Emergency repair avg
Every 3 mo
Filter cadence
