What Is a Whole-Home Generator?

A whole-home generator is a backup power system that automatically provides electricity during an outage. Unlike portable generators, it connects directly to your home’s electrical system and runs on natural gas, propane, or diesel. Whole-home generators ensure continuous power to essential appliances and systems, keeping your home safe and comfortable during blackouts.

How Does a Whole-Home Generator Work?

When the power goes out, an automatic transfer switch detects the outage and activates the generator. The generator then supplies power to your home, restoring electricity within seconds. Once utility power is restored, the system shuts off automatically, ensuring a seamless transition.

What Are the Benefits of Installing a Whole-Home Generator?

A whole-home generator provides uninterrupted power, protecting your home from outages caused by storms, grid failures, or emergencies. It keeps essential appliances, medical devices, and heating and cooling systems running. Additionally, it increases home value and offers peace of mind, especially in areas prone to frequent power disruptions.

What Size Generator Do I Need for My Home?

The right generator size depends on the total wattage of the appliances and systems you want to power. Smaller generators (10-15kW) can run essential systems, while larger models (20-30kW or more) can power the entire home. A professional electrician can help determine the appropriate generator size based on your household’s energy needs.

What Fuel Options Are Available for Whole-Home Generators?

Whole-home generators typically run on natural gas, propane, or diesel. Natural gas provides an unlimited fuel source if your home has a gas connection, while propane is a good option for homes without gas lines. Diesel generators are often used for high-power applications but require fuel storage.

How Long Can a Whole-Home Generator Run?

A whole-home generator can run indefinitely on natural gas, as long as the fuel supply is uninterrupted. Propane or diesel models run until their fuel supply is depleted, with run times depending on tank size. Regular maintenance ensures the generator remains in good working condition for extended use.

Do Whole-Home Generators Require Maintenance?

Yes, regular maintenance is necessary to keep the generator running efficiently. Maintenance includes checking oil levels, replacing filters, testing the battery, and running the unit periodically to ensure proper function. Professional inspections help identify and fix potential issues before an outage occurs.

Should I Hire a Professional to Install a Whole-Home Generator?

Yes, whole-home generator installation involves electrical and gas connections that must meet safety codes. A licensed electrician ensures proper sizing, wiring, and integration with your electrical/electrical-panels/”>home’s electrical panel. Professional installation guarantees safe and reliable operation when you need it most.

Buffalo Whole-Home Generators

Reliable Backup Power for Your Home

A whole-home generator provides peace of mind by keeping your lights, appliances, and essential systems running during power outages. In Buffalo, where storms and winter weather can lead to unexpected blackouts, having a dependable backup power source is essential. At Roy’s Plumbing, Heating, Cooling & Electrical, we install and service high-quality generators to ensure your home stays powered when you need it most. Our expert team helps you choose the right generator size and model to fit your household’s energy needs. With professional installation and maintenance, we make sure your Buffalo home is always prepared for the unexpected.

Our Residential Generator Services

Power outages can be inconvenient and even dangerous, but a whole-home generator ensures your essential systems stay operational. We offer expert installation, repair, and maintenance services to keep your generator ready when you need it most. With our reliable solutions, Buffalo homeowners can enjoy uninterrupted power and peace of mind year-round.

Generator Installation: A professionally installed generator provides seamless backup power during outages. We assess your home’s energy needs and install the right system for maximum reliability.
Generator Replacement: If your current generator is outdated or struggling to keep up, upgrading to a new model improves efficiency and performance. We remove old units and install modern, energy-efficient systems that meet your power demands.
Generator Repair Services: If your generator isn’t functioning properly, we diagnose and fix issues to restore its performance. From electrical malfunctions to fuel supply problems, we ensure your backup power is always ready.
Routine Generator Maintenance: Regular maintenance helps prevent unexpected failures and extends the lifespan of your system. We inspect, test, and service your generator to ensure it operates efficiently when needed.
Automatic Transfer Switch Installation: An automatic transfer switch seamlessly shifts power to your generator when an outage occurs. This ensures your home stays powered without the need for manual activation.

To see what we can do for you, call us for a quote or to schedule service.

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Why Choose Roy’s For Residential Generators?

Roy’s Plumbing, Heating, Cooling & Electrical is dedicated to helping Buffalo homeowners stay prepared with dependable backup power solutions. Our experienced team ensures every generator installation, repair, and maintenance service is completed with precision and care. We take the time to assess your home’s energy needs and recommend the best system for reliable performance. With decades of experience and a reputation for quality workmanship, we are the trusted choice for whole-home generator services.

Experienced Generator Specialists: Our team is trained to install and service all major generator brands, ensuring expert-level care. We stay up to date on the latest backup power technologies to provide the best solutions for your home.
Reliable Emergency Power Solutions: When the power goes out, you need a generator you can trust to keep your home running. We ensure your system is properly sized and installed for uninterrupted performance.
High-Quality Equipment: We only install top-rated generators designed for efficiency and durability. Our products provide long-term reliability, so your home stays powered during outages.
Seamless Installations: From start to finish, we handle every detail of your generator installation to ensure a smooth process. Our team works efficiently to get your backup power system up and running without hassle.
Ongoing Maintenance & Support: A generator is only useful if it’s in peak working condition, which is why we offer routine maintenance and repair services. We help you stay ready for power outages with regular checkups and fast service when needed.

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4.8 Google Rating

See Why Our Customers Feel Like Stars

On March 24, 2026 Nick from Roy's came to my house to do a review of our whole house electrical system. He was very polite, professional and thorough. He did a great job, answered all my questions and fully explained what he was looking at. It pays to be a member of Roy's. On March 25, Tyler came from Roy's to do a plumbing review. Outstanding service, if I owned the company he is an employee I would highly value. Very comprehensive review of all our plumping in the house.

Robert McLennan

2 days ago

Great job in a difficult location. Did awesome work

Mike Garvey

3 days ago

Great quick service feel great about the membership for our HVAC electrical and plumbing needs!!!

William Boyle

3 days ago

Nosh replaced my leaking water heater. He was courteous and efficient. He double checked his work and left the work clean and dry.

Randall Chung

3 days ago

Great customer service, always on time! They explain what needs to be done and the pricing before they start. I’ve always had exceptional service and use them for everything.

Beverly Keefe

3 days ago

Josh B. Went full detail. Provided options and was understanding to our constraints. Love ROY'S. Very respectful of our home

Steven

4 days ago

Dan was professional and knowledgeable. From the moment he entered my home, he asked questions as to usage and concerns. He was also flexible as I had several workmen in my home that day. Thank you!

Idalia Lopez De Diaz

4 days ago

Absolutely a fabulous company. Everyone (from the first phone call. To completion of installation of both furnace and ac) has gone above and beyond. I can’t say enough about this company and its outstanding employees

deb Harman

5 days ago

The plumber, Nick, offered clear, detailed information regarding current situation. We thought we needed a plumber (dropped comb down toilet) After checking, all systems were functioning. If potential needs arise, we will definitely call Roy's. Very pleased with the professional, yet also friendly, service. Would recommend Roy's to family /friends. We purchased membership program. Thank you for honest service!

Cathy Sass

5 days ago

Very friendly, explained everything that they were doing throughout the entire job. They cleaned up and made sure that we were happy with everything before they left.

Austin gzzz

6 days ago

Both the installers were personable and polite. I’d say they were efficient also, although nothing to compare it to. Overall we were happy with Roy’s.

Vicki Vogt

6 days ago

Nathan did an excellent job. He Went above and beyond. I would highly recommend Roy's

Steve Usatch

6 days ago

Tom and Andrew replaced my furnace today. They were extremely professional and explained everything before they left. There was no mess, the town of Amherst came and inspected Midway. I was very impressed with their professionalism and service. This is the second service I’ve had done with Roy’s and they are really the best!

Kathleen Casacci

7 days ago

Workers from Roy’s showed up exactly at time scheduled. David, one of the workers, explained job thoroughly and was very friendly and knowledgeable. He answered any questions we had and was very accommodating to any concerns. Would definitely recommend Roy’s.

Mary Guadagna

1 week ago

Excellent service. Josh B was fantastic and explained everything thoroughly. I will definitely use him again for any plumbing issues.

Dana Tschopp

1 week ago

On time very efficient. Went over what he did and showed us the inside of furnace. Very nice technician.

David Dubbert

1 week ago

Jack and his partner did a great job fixing the plugged cellar floor drain and installing a new hot water tank.

David Brown

1 week ago

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Schedule Service With Roy’s Today

Need help with your plumbing, heating, cooling, or electrical system? Roy’s makes it easy to schedule fast, reliable service in Buffalo and the surrounding areas. Our licensed technicians arrive on time, treat your home with respect, and get the job done right the first time. Whether it's an urgent repair or a routine checkup, we're here to keep your home safe and comfortable. Don’t wait—book your appointment with Roy’s today and experience the 5-star difference!

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