The published ranges
Standby generator, installed
$8,000to$16,000
Generator plus installation
Generac · checked Nov 2026 · national
Installation work
$1,509to$8,799
What most homeowners pay; 2026 average $5,154
Angi · updated Sep 2026 · national
Generac's installation guide says installed home standby systems average $8,000 to $16,000 including the generator. Angi's installation cost guide, based on projects booked through its network, puts the 2026 national average for whole-house generator installation at $5,154, with most homeowners paying between $1,509 and $8,799. The two sources measure different things, so read them side by side rather than as one number.
Neither is a North Las Vegas quote. They're a starting point for budgeting.
What moves a valley install
The air conditioner. The bigger the central air system, the bigger the generator or the more load management it needs. This is the single largest factor in most valley homes.
Distance to the gas meter. A pad close to the Southwest Gas meter needs a short gas line. A spot on the far side of the house, or one the meter can't supply alongside the furnace and water heater, costs more.
The main panel. A newer panel with room to spare is simple. An older or full panel may need work before the transfer switch goes in.
Where the unit sits. Side yards between the house and a block wall are often narrow. The unit needs clearance for airflow and service, which sometimes means a different spot or extra pad work.
A short gas run from meter to padUpkeep and repairs
Maintenance visit
$171to$396
Per visit; national average $274
Angi · updated Sep 2026 · national
Transfer switch repair
$50to$150
Replacement part $200–$400 plus labor
Angi · updated Sep 2026 · national
Those figures are from Angi's generator maintenance and repair cost guide. In this climate, plan on at least one maintenance visit a year.
Portable hookups cost less
If you already own a portable, an inlet box and panel interlock cost a fraction of a standby system. The portable hookup page explains what's involved and where the limits are.
