Generator Installation for Homeowners: What You Need to Know

When the lights go out, the silence is loud. The fridge hum stops, the heat or AC halts, and suddenly, your world feels smaller. Backup power isn’t just for “what ifs”—it’s for the “when.” For homeowners, a generator can mean warmth, safety, and peace of mind.

At Denny’s Heating, we know that installing a generator isn’t just about plugging something in. It’s about protecting your home, your family, and your comfort—no matter what the weather decides to do.

Why Install a Generator? ⚡

You might wonder: “Do I really need one?” Think of a generator as an umbrella for your house. When storms hit, it keeps you dry—metaphorically speaking. Here’s why many homeowners decide it’s worth it:

• Weather emergencies: Storms, hurricanes, and blizzards can knock out power for hours—or days.
• Medical needs: Some rely on powered medical equipment. Outages are more than inconvenient—they’re dangerous.
• Food safety: A fridge full of groceries can spoil fast if the power’s out.
• Home security: Alarms and cameras need electricity to work.
• Comfort: Heating, air conditioning, and hot water can make or break your day.

Even if you rarely lose power, that one time can be enough to justify a backup solution.

Types of Home Generators

Not all generators are built the same. Each type fits a different need, just like how a mini-split system isn’t always the answer for whole-house heating. Here’s a breakdown:

Portable Generators

• Best for: Short outages, powering a few essentials (fridge, lights, sump pump).
• Fuel: Usually gasoline or propane.
• Pros: Affordable and easy to move.
• Cons: Manual setup, can’t run everything in the house, need to be operated outdoors due to carbon monoxide risk.

Standby Generators

• Best for: Whole-house coverage or automatic backup.
• Fuel: Natural gas or propane, sometimes diesel.
• Pros: Turn on automatically during an outage, can power the entire home, permanently installed.
• Cons: Higher upfront cost, professional installation required.

Inverter Generators

• Best for: Sensitive electronics, quieter operation.
• Fuel: Gasoline or propane.
• Pros: Quieter, more fuel-efficient, stable power output.
• Cons: Lower power capacity, best for smaller loads.

Solar Generators

• Best for: Eco-friendly backup, limited use.
• Fuel: Solar panels with battery storage.
• Pros: Clean energy, quiet, no fuel storage.
• Cons: Limited power output, dependent on sunlight and battery size.

Sizing Your Generator

Picking the right size is like finding the right-sized boots—too small and you’re stuck; too big and you’re wasting money. Start by listing what you want to power:

• Essentials: Refrigerator, sump pump, medical equipment, heating/cooling, lights
• Extras: Washer/dryer, kitchen appliances, entertainment

Add up the wattage. Most homes need between 5,000 and 20,000 watts, but your needs may vary. Licensed installers, like those at Denny’s Heating, can help with a home energy audit to dial in the perfect fit.

Fuel Options: What’s Best?

Your choice depends on availability, storage, and preference:

• Natural gas: Never needs refilling if you have a gas line. Clean burning.
• Propane: Can be stored on-site. Good for rural areas.
• Diesel: High energy output. Needs safe storage.
• Gasoline: Easy to find, but not ideal for standby units due to storage issues.
• Solar: No fuel, but requires planning and battery maintenance.

Check local codes—some communities restrict certain fuels or require permits for storage tanks.

The Installation Process

Generator installation isn’t a weekend project. Here’s how the process often goes:

Step 1: Assessment

A licensed professional evaluates your home’s needs—square footage, electrical load, and essential circuits. They’ll ask about your goals (full home vs. partial backup) and consider any recent upgrades like whole-house fans or radiant heating.

Step 2: Permits & Codes

• Permits: Most towns require one for generator installs.
• Codes: National Electrical Code (NEC) and local building codes dictate placement, wiring, and ventilation. Following these isn’t optional—it’s the law.

Step 3: Siting & Preparation

• The generator must be installed a certain distance from windows and doors (usually at least 5 feet).
• Concrete pads or stable ground are required.
• Proper ventilation is critical for safety.

Step 4: Electrical & Fuel Connections

• A transfer switch is installed to safely switch between utility power and generator power.
• Fuel lines are connected and pressure-tested.

Step 5: Testing & Walkthrough

• The system is tested under load.
• Homeowners are shown how to operate safely and what to expect during an outage.

Safety Considerations 🛑

Safety isn’t just a box to check. It’s the backbone of any generator project.

• Never run a portable generator indoors or in a garage. Carbon monoxide is invisible and deadly.
• Install carbon monoxide detectors near all sleeping areas.
• Follow all manufacturer instructions—especially for fuel storage and maintenance.
• Transfer switches are not optional. Backfeeding power through a wall outlet is dangerous and illegal.
• Routine inspections by a certified technician can spot issues before they become hazards.

For more, the U.S. Consumer Product Safety Commission and National Fire Protection Association offer detailed safety guidelines.

Maintenance Tips

Treat your generator like you would your HVAC system—regular care keeps it ready for emergencies.

• Run it monthly to keep parts lubricated and fuel fresh.
• Check oil and coolant levels before storm season.
• Replace filters and spark plugs as recommended.
• Inspect for leaks or corrosion.
• Test your transfer switch with a simulated outage.

If you’re not comfortable with these steps, schedule annual professional maintenance. Denny’s Heating offers full generator and emergency hvac services, so you’re never left in the dark.

Costs: What to Expect

Costs depend on size, type, and installation complexity. Here’s a ballpark:

• Portable generators: $500–$2,500 (not including extension cords or manual transfer switches)
• Standby generators: $3,000–$10,000+ (installed)
• Permits, pads, and electrical work can add $1,000–$5,000+.

Remember, investing in a generator is like buying peace of mind. There’s an upfront cost, but it pays off when you need it most.

Transfer Switches: The Unsung Hero

A transfer switch separates your home from the grid before the generator supplies power. Think of it as a traffic cop for electricity—it keeps power flowing where it should, and nowhere else.

• Manual transfer switches: Require you to flip a switch during an outage.
• Automatic transfer switches: Sense outages and switch over automatically.

Without a transfer switch, you risk electrical fires and dangerous “backfeeding” into utility lines.

Emergency Prep: Be Ready Before the Storm

• Make a checklist: Know what needs power and where your emergency supplies are.
• Keep fuel fresh: Rotate gasoline and propane as needed.
• Test your system: Especially before storm season.
• Store manuals and contact info for Denny’s Heating and local emergency numbers where you can reach them.

Code Compliance and Licensed Installers

Never settle for shortcuts. Licensed installers know the ins and outs of local codes and safety requirements. This isn’t just about following rules—it’s about protecting your family and your investment.

• National Electrical Code (NEC) compliance is required.
• Local permits and inspections ensure everything is up to standard.

Always ask for credentials. Denny’s Heating’s technicians are trained to handle every step, from Hood & Exhaust Installation near you to complex home energy projects.

Maintenance Tips

Don’t let your generator become a “set it and forget it” appliance. Regular checkups prevent nasty surprises:

• Run the generator monthly for 15–20 minutes.
• Keep the area clear of debris, leaves, and snow.
• Schedule annual service for oil changes, filter swaps, and system checks.

Cost Breakdown: What Drives the Price?

Think beyond the sticker price. Here’s what affects your final bill:

• Generator size and brand
• Type of fuel and connection
• Transfer switch (manual or automatic)
• Electrical upgrades or rewiring
• Permit fees
• Site preparation (pads, landscaping)

A professional can walk you through options and help you get the most value for your budget.

When It’s an Emergency

If your generator fails during a storm, call an emergency hvac provider like Denny’s Heating. Don’t risk DIY fixes in dangerous conditions. Our technicians can safely troubleshoot and restore your power—day or night.

Frequently Asked Questions

How do I know what size generator I need?

List out what you want to run. Add up the wattage for all devices. For whole-house coverage, a professional home energy audit is best.

Can I install a generator myself?

Portable units can be set up by homeowners, but standby generators require electrical and fuel work—this should be left to licensed professionals.

How often should my generator be serviced?

At least once a year, or after every major outage. Run it monthly to keep it ready.

Will a generator affect my home insurance?

Sometimes—check with your provider. Permitted, code-compliant installation is usually required.

Local & Seasonal Considerations 🌦️

• Storm-prone areas: More frequent outages may justify a larger or automatic generator.
• Cold climates: Ensure fuel doesn’t gel or freeze; keep vents clear of ice and snow.
• Urban vs. rural: Access to natural gas lines and local fuel availability can influence your choice.

Ask your installer about seasonal prep—just like you would before a long HVAC maintenance season or when considering Hood & Exhaust Installation near you.

When it comes to generator installation, don’t leave anything to chance. The right system, sized and installed by licensed professionals, keeps your home safe through any storm. Ready for peace of mind, year-round?

Call Denny's Heating now — or reach us anytime at  888-840-5783 .