Cost to Whole-House Generator Installation in Boise, ID

$7,350–$21,000 in Boise

5% above the national average · 1.05x cost multiplier

Expect to pay $7,350–$21,000 for a whole-house generator installation in Boise, about 5% above the national benchmark. The Mountain West region's contractor market and material costs account for most of this difference. The detailed breakdown below shows how budget, mid-range, and premium projects compare at Boise prices.

Cost Breakdown in Boise

Line Item	Low	Mid	High
Cost per unit	$3675	$12600	$21000
Materials	$4,200	$7,350	$15,750
Labor	$2,625	$4,200	$7,350
Permits	$840	$1,260	$2,100
Total	$7,665+5% vs. national avg	$12,810+5% vs. national avg	$25,200+5% vs. national avg

Budget

10-14 kW air-cooled standby generator, 100-amp transfer switch, existing gas line

Mid-Range

20 kW air-cooled, 200-amp automatic transfer switch, new gas line run

Premium

22+ kW liquid-cooled, whole-house coverage, extended gas line, load management

Material Options

Material prices below are national averages; availability in Boise may shift costs slightly.

Material	Cost/Unit	Pros	Cons	Best For
10-14 kW Air-Cooled Standby (Generac, Kohler)	$4,000 - $8,000 installed	Powers essential loads, most affordable standby option, widely available service	Cannot run central AC plus all appliances simultaneously, louder than liquid-cooled	Homeowners wanting essential protection without full-house coverage, budgets under $10,000Powers essential loads, most affordable standby option, widely available service
20-22 kW Air-Cooled Standby	$8,000 - $15,000 installed	Handles most whole-house loads including HVAC, widely available, good balance of cost and coverage	Still limited for large homes with electric ranges, hot tubs, or EV chargers	Most single-family homes under 3,500 sq ft, best value for near-whole-house coverageHandles most whole-house loads including HVAC, widely available, good balance of cost and coverage
Liquid-Cooled Standby (22+ kW)	$15,000 - $35,000 installed	True whole-house coverage, quieter than air-cooled, longer lifespan (20,000+ hours), commercial-grade	Very high cost, larger footprint, requires more extensive installation	Large homes, all-electric homes, homeowners in frequent-outage areas, commercial applicationsTrue whole-house coverage, quieter than air-cooled, longer lifespan (20,000+ hours), commercial-grade
Portable Generator + Transfer Switch	$1,500 - $4,000 installed	Much lower cost, portable for other uses, no permanent installation permits in some areas	Manual operation, requires fuel storage and management, limited to 5-7 kW in affordable range	Occasional outages, budgets under $5,000, renters, vacation propertiesMuch lower cost, portable for other uses, no permanent installation permits in some areas
Propane-Fueled Standby	$7,000 - $20,000 installed (plus tank)	Works where natural gas is unavailable, cleaner burning than diesel, automatic operation	Requires propane tank and regular refilling, tank lease or ownership cost ($500-$2,500)	Rural homes without natural gas service, areas with frequent and prolonged outagesWorks where natural gas is unavailable, cleaner burning than diesel, automatic operation

Other Projects in Boise

Composite Deck Building

Full Kitchen Remodel

Central AC Installation

Back to national average for Whole-House Generator Installation

Boise Estimate

Typical Range

$7,350–$21,000

vs. National Average

5% above national

Cost Multiplier

1.05x

Cost Per unit

$3675–$21000

Estimates apply Boise's 1.05x regional cost multiplier to national averages. Actual bids vary by contractor, project scope, and timing.

See national average costs →