Brand planning
Generac Generator Installation Cost
Separate current Generac generator-only MSRP, transfer-switch packages and property-specific installation work.
Generac's current generator-only starting MSRPs are $4,889 for 14 kW, $5,709 for 18 kW, $6,309 for 22 kW and $7,159 for 26 kW cellular models. Its sizing page states that many complete systems total $8,000–$16,000 including generator, equipment, materials and installation. Exact packages and local site work vary.
What changes the result?
A useful calculation starts with the physical scope and the written commercial terms. These are the factors to make explicit:
- Exact model, fuel rating and current MSRP
- Generator-only or switch bundle
- Electrical, gas or propane design
- Pad, routes, permits and commissioning
- Dealer service, warranty and monitoring
Use one scope for every quote
Give each business the same information and ask it to resolve the same boundaries. That makes the totals more comparable and exposes work left as an allowance or exclusion.
- Compare exact model and package numbers
- Separate MSRP from installed price
- List site additions and exclusions
- Confirm warranty registration and service
Current generator-only MSRP examples
These prices come from current manufacturer product pages and are starting MSRP for the cited generator-only cellular models. A switch bundle, dealer price, delivery, tax and installation are separate unless the proposal says otherwise.
- 14 kW model 7258: $4,889
- 18 kW model 7259: $5,709
- 22 kW model 7260: $6,309
- 26 kW model 7327: $7,159
From the box price to the complete system
Generac's sizing page states $8,000–$16,000 total for many US home standby systems including the generator, system equipment, materials and installation. That is a more relevant comparison than MSRP, but it remains a broad manufacturer statement rather than a quote for a property.
Compare proposals by model and site scope
Record generator and switch model numbers, natural-gas and propane ratings, load controls, pad, conductor and fuel routes, meter or tank work, permits, startup, monitoring and warranty. If an alternative model is proposed, require the output, fuel and included-equipment differences in writing.
Questions people ask
How much is a 22 kW Generac generator?
Generac currently lists the cited 22 kW generator-only cellular model from $6,309 MSRP. A transfer switch, delivery, tax and installation may be separate.
How much is a complete Generac installation?
Generac's current sizing page states $8,000–$16,000 for many complete systems including generator, equipment, materials and installation. Local designs can fall outside that range.
Does Generac MSRP include a transfer switch?
Not on the generator-only product examples cited here. Generac also sells packages with switches, so compare the exact model and variant rather than the kW label alone.
Should I choose a Generac size from house square footage?
No. Use actual running and starting loads, planned load management, fuel rating and a professional electrical and fuel assessment.
Method and sources
The model is a planning tool, not a quotation. These are the published sources used for this page; read the full assumptions before relying on a range. Source review: 14 September 2026.
- Generac sizing and cost guide
Manufacturer complete-system range and sizing boundary; reviewed 14 September 2026.
- Generac 14 kW product page
Current generator-only starting MSRP for model 7258; reviewed 14 September 2026.
- Generac 18 kW product page
Current generator-only starting MSRP for model 7259; reviewed 14 September 2026.
- Generac 22 kW product page
Current generator-only starting MSRP for model 7260; reviewed 14 September 2026.
- Generac 26 kW product page
Current generator-only starting MSRP for model 7327; reviewed 14 September 2026.