What to Expect During a Whole Home Generator Installation

Installing a whole-home generator involves more than setting a unit in your yard — it's a coordinated process that includes property evaluation, permitting, electrical and gas work, and a final inspection before your system is ready to protect your home. Knowing what's involved ahead of time helps you choose the right installer and avoid surprises along the way.

Step 1: Initial Consultation

The process starts with a conversation about your home's power needs — square footage, key appliances and systems you want protected (HVAC, well pump, sump pump, home office equipment), and your budget. This is also when most reputable installers will ask about your fuel source, since natural gas and propane both work but affect sizing and setup differently.

Step 2: Property Evaluation

A technician visits your property to determine the best location for the generator, evaluate your electrical panel, and check for code requirements like clearance from windows, doors, and property lines.

At J&H Power Solutions, this property review is where we help you land on the right generator size. Briggs & Stratton's residential lineup — 13kW, 18kW, 22kW, and 26kW models — gives us the flexibility to match your home's actual power needs rather than pushing a one-size-fits-all unit. Larger models also feature an exclusive front-facing exhaust design, which directs exhaust away from your home and gives more flexibility in where the unit can be placed.

Step 3: Estimate & Planning

You'll receive a detailed estimate covering the generator, transfer switch, pad or mounting, electrical and gas line work, and permitting fees. This is the point to ask questions about warranty coverage, since not all generator brands offer the same protection. Briggs & Stratton's PowerProtect+ DX line, sold through Platinum dealers like J&H Power Solutions, comes with a 10-year warranty covering parts, labor, and travel — compared to 5-year standard warranties from other brands.

Step 4: Permitting

Nearly every jurisdiction in Maryland, DC, Virginia, and North Carolina requires a permit for standby generator installation, covering electrical work, gas line connections, and placement relative to structures per NFPA 37 guidelines. This step is where many homeowners get stuck if they're managing installation themselves or working with a contractor who doesn't handle it directly.

This is also where working with a generator specialist matters. J&H Power Solutions manages the entire permitting process — from application through final inspection — as a standard part of every installation, so you're not tracking down paperwork or scheduling county inspectors on your own.

Step 5: Installation Day

Installation typically includes:

• Setting the generator on a pad or pre-approved mounting base, positioned as close as 18 inches to your home in many cases with Briggs & Stratton units

• Running electrical connections and installing the automatic transfer switch, usually near your electric meter or breaker panel

• Connecting the natural gas or propane line

• Testing the system, including the automatic start sequence

Most residential standby installations are completed in 1-2 days, though timeline can vary

Step 6: Inspection & Startup

After installation, your local jurisdiction typically requires a final inspection to confirm the system meets code. Once approved, your installer should walk you through how the system works, including the automatic transfer switch and any load management features.

Step 7: Ongoing Maintenance Setup

Installation is the beginning of your generator's life, not the end of the relationship. A generator that isn't maintained is far more likely to fail during the outage it was built for. This is where J&H Power Solutions' approach differs from installers who treat generators as a one-time sale — generator maintenance and service is our specialty. We recommend enrolling every new installation in our 30-point annual maintenance plan, paired with a 6-month checkup and 24/7 EnergyTrak remote monitoring, so our team can catch issues before they turn into a no-start during a real outage.

Why the Installer You Choose Matters

Not every company that installs generators is equipped to service them long-term. J&H Power Solutions has been family-owned and operated for more than 40 years, serving over 10,000 customers, and our team focuses specifically on backup power systems rather than treating generators as one line item among many services. As a Platinum Briggs & Stratton Dealer and NFPA 110 compliant company, we manage your installation from permitting to final inspection, and remain your point of contact for maintenance, troubleshooting, and repairs for as long as you own the system.

Why It's Worth Doing Right

Beyond the peace of mind of automatic backup power, a properly installed whole-home generator is also a home value investment. Industry estimates put the resale value increase from a standby generator at 3% to 5%, with some analyses showing ROI as high as 150% depending on your market — particularly relevant in regions like the DMV and Charlotte, where storm-driven outages are increasingly common and buyers are paying attention to grid reliability. (Source)

Frequently Asked Questions

How long does whole home generator installation take?

The physical installation is typically completed in 1-2 days, though the full process — including permitting — can take a few weeks depending on your jurisdiction and property.

Do I need a permit for a home generator installation?

Yes, in nearly all areas across Maryland, DC, Virginia, and North Carolina. Permits typically cover electrical work, gas line connections, and generator placement relative to your home. J&H Power Solutions manages this process for every installation.

Where does a standby generator get installed on my property?

Generators are typically placed on a concrete pad outside the home, positioned per manufacturer and code requirements for clearance from windows, doors, and property lines. Briggs & Stratton's front-facing exhaust design allows for closer, more flexible placement in many cases.

What size generator do I need for my home?

It depends on your square footage and which systems you want to power. A property evaluation determines the right fit among Briggs & Stratton's 13kW to 26kW residential lineup, and load management systems like Symphony Choice can extend a smaller generator's coverage to more appliances.

What's included in a home generator installation cost?

A full installation typically includes the generator unit, automatic transfer switch, pad or mounting, electrical and gas line work, and permitting. Total installed cost generally ranges from $13,000 to $18,000, depending on generator size and site conditions.

Planning a generator installation?

Request a free estimate from J&H Power Solutions. We'll evaluate your property, walk you through sizing, and manage the entire process from permitting to final inspection.