August 22, 2025
How Long Does It Take To Install a Generac Generator?
Are you thinking about installing a Generac generator? You might be wondering how long the process takes. While the actual installation might be completed in a few hours, the entire process—from consultation to final approval—can take several weeks. Let’s break down the Generac generator installation time, including what affects the timing and how to ensure a smooth installation.

The Generac Generator Installation Process
A professional Generac generator installation involves multiple steps. While some parts move quickly, others depend on factors beyond your control.
Initial Consultation (1 to 2 weeks)
The process starts with a consultation, which you may need to schedule out a week or two. During the meeting, an authorized Generac dealer will assess your home’s power needs, recommend the right generator size, and determine the best installation location.
Permitting and Approvals (1 to 4 weeks)
Before any work can begin, you’ll need a permit from your local municipality. The time required for this part of the Generac generator setup depends on your location, how quickly your local office processes requests, and whether additional approvals are required.
Site Preparation (1 to 3 days)
Once the permits are secured, the installation team prepares the site. This usually involves creating a level foundation for the generator with a concrete pad or a gravel base.
Generator Installation (1 to 2 days)
Now for the main event—placing and installing the generator. A professional team will secure the unit on its foundation, connect it to your home’s electrical system, and install a transfer switch.
Fuel Line Installation and Connection (1 to 2 days)
Your installation professional will install the necessary fuel lines. If you have an existing natural gas line, your generator can tap into this endless fuel supply. For homes using propane, you might need to set up a new tank or upgrade an existing one.
Testing and Final Inspection (1 to 2 weeks)
Once everything is installed, the generator must be tested to ensure it operates correctly. This includes running the system under load and checking the automatic transfer switch. A final inspection from the local municipality might be required, which can add time depending on scheduling.
Factors Affecting Generac Generator Installation Time
Several variables may extend how long it takes to install a Generac generator. Some examples include:
- Permitting delays: Some municipalities move quickly, while others take weeks to approve permits.
- Site conditions: If your chosen installation spot is difficult to access or requires additional work, such as tree or shrub removal, expect additional site preparation time.
- Scheduling conflicts: Professional installers, electricians, and inspectors have busy schedules. Coordinating their availability may cause delays.
- Weather issues: Heavy rain, snow, or extreme cold can postpone installation, especially if excavation or fuel line work is involved.
- Generator availability: While Generac generators are widely available, occasional supply chain delays extend the waiting period.
Why Choose Seidel Electric Inc.?
Now that you know the estimated Generac generator installation duration, you may be eager to get started. Work with Seidel Electric Inc. for a job well done. Our family-owned, customer-focused team provides free in-home consultations to ensure you get the right generator for your needs. If you’re ready to begin, please contact us today.