POWER YOUR LIFE.
Beat Power Outages With Our Dependable Generators New Orleans Locals Need
POWER YOUR LIFE.
Beat Power Outages With Our Dependable Generators New Orleans Locals Need
Our Services
Whole Home Generator Installation
Turnkey standby generator installation for reliable backup power. We handle site planning, permits, wiring, gas connections, and full system testing so your home stays powered during outages.
Generator Sales and Sizing
We size your generator based on your home’s real electrical load, not guesswork. Get the right unit for your needs, budget, and critical circuits with clear recommendations and upfront pricing.
Generator Maintenance and Service
Routine maintenance keeps your generator ready when you need it. We perform inspections, fluid changes, battery checks, and load testing to prevent failures and extend system life.start.
Generator Repair and Troubleshooting
Fast diagnosis and repair for generators that won’t start, won’t transfer, or show fault codes. We service most major brands and restore safe, dependable operation as quickly as possible.
Transfer Switch Installation and Replacement
Safe, code-compliant transfer switch installs and upgrades. We ensure seamless switching between utility and generator power without risk to your home or the grid.
Emergency and Storm Preparedness
Priority storm response for outage and generator failures. When severe weather hits, we provide rapid dispatch, emergency repairs, and restart support to get your backup power running.
About Robert Guy
GNO's Generator Guy
I’m Robert Guy, and I specialize in standby generator systems for homes and small businesses. This is what I focus on every day. I handle generator sizing, planning, and installation with attention to detail because when the power goes out, the system has to work. No excuses.
When you call Guys Generators, you’re not routed through a sales desk or handed off between departments. You speak directly with me. I evaluate your needs, recommend the right equipment, and make sure the installation is done correctly and cleanly.
My goal is simple: give you dependable backup power and clear answers — without pressure, upselling, or confusion.
We're located in the heart of Mandeville, Louisiana
Trusted by 80+ Homeowners Across the Northshore and GNO
⭐ 5.0 Average Rating on Google
Robert was very professional. I was so lucky to have someone come to my home to do my electrical work and not take advantage of me and try to talk over my head as if I was a dummy. He was very respectful and made sure I understood exactly what was needed to be done. The most important thing I got from working with him is that he was honest. That goes a long way. He is highly recommend in my book.
★★★★★
Roosevelt Madison
Slidell, LA
Guy’s Generators made the process easy and stress free. We had several companies come out and give us quotes and we are very happy that we went with this company. Rob was easy to work with and he and his crew did a great job. He was straightforward, knowledgeable and professional. We purchased the Kohler 26 KW whole house generator and are very satisfied with the product and installation. We didn’t have to wait months for it to be installed and we also saved on the cost by going with Guy’s Generators compared to the other quotes we had received. My husband and I highly recommend this company!
★★★★★
Ellen Jordan
Covington, LA
Rob did a great job moving my generator to a metal stand. We tweaked through several alternatives, and there were several changes about where to relocate the unit - all due to me - and throughout the process Rob was patient and helpful. In the ned, we came up with a great solution, and I couldn't be more pleased with the new stand and Rob's installation. Great job!
★★★★★
Mike Mislove
Mandeville, LA
Frequently Asked Questions About Generators on the Northshore and Greater New Orleans Area
What areas do you serve in Southern Louisiana?
Guys Generators provides whole home generator installation, maintenance, and repair across the Northshore and surrounding communities. We serve St. Tammany Parish, Tangipahoa Parish, and parts of the Greater New Orleans area, including Jefferson and Orleans Parishes
.
Our primary service areas include Mandeville, Covington, Madisonville, Slidell, Hammond, Metairie, and Kenner. If you are unsure whether we service your location, contact us and we will confirm availability.
What size whole home generator do I need in St. Tammany Parish?
The correct generator size depends on your home’s electrical load, critical circuits, square footage, HVAC systems, and how much of your home you want powered during an outage.
We perform a detailed load calculation during your consultation to ensure your generator is properly sized. Correct sizing is essential for safe operation, long-term reliability, and avoiding unnecessary overspending on equipment that is larger than needed.
What is the difference between a standby generator and a portable generator?
A standby generator is permanently installed and automatically turns on when power is lost. Most homeowners in St. Tammany Parish choose standby generators because of hurricane-related outages and extended power interruptions.
Portable generators must be manually started and typically power only limited circuits. They can be useful for temporary needs but do not provide the seamless, whole-home protection that a properly installed standby system offers.
How long does whole home generator installation take in St. Tammany Parish?
Installation timelines vary depending on site conditions, permitting, and electrical requirements.
Most residential standby generator installations are completed within several days once permitting and scheduling are finalized. We handle coordination, inspection requirements, and final testing to ensure everything operates safely and correctly.
Do I need a permit for generator installation in St. Tammany or Jefferson Parish?
Yes. Generator installation typically requires local permits and inspections to meet electrical and safety codes.
Our team is familiar with permitting requirements across St. Tammany Parish, Tangipahoa Parish, and Jefferson Parish. We ensure every installation meets applicable codes and inspection standards before the system is placed into service.
Why is generator maintenance important in South Louisiana?
Southeastern Louisiana experiences hurricanes, severe storms, high humidity, and extended outages. Regular generator maintenance ensures your system is ready when needed most.
Maintenance includes preventive inspections, fluid changes, battery checks, and load testing. Proper service extends equipment life and ensures your generator can handle real-world electrical demand during an emergency.
How often should a generator be serviced?
Most manufacturers, including Kohler, recommend professional service at least once per year.
Systems that run frequently or are heavily relied on during storm season may require additional inspections. Routine maintenance helps keep your generator reliable and operating at peak performance year-round
Are your generator installations compliant with St. Tammany, Jefferson, and Orleans Parish electrical codes?
Yes. All installations are completed in accordance with local electrical codes, parish permitting requirements, and hurricane preparedness standards.
Our experience working throughout the Northshore and surrounding communities ensures installations meet both manufacturer standards and local regulations.
Are you an authorized Kohler generator dealer?
Yes. Guys Generators is an authorized Kohler generator dealer, and our technicians are trained to install and service Kohler standby systems.
We also service other major brands, but our primary focus is Kohler due to its reliability, build quality, and long-term performance in South Louisiana conditions.
Do you provide generator installation for both residential and commercial properties?
Yes. We install standby generators for residential homes, small businesses, and commercial facilities throughout Southern Louisiana.
Each system is evaluated individually to ensure it meets the property’s electrical load requirements and long-term usage demands.
How much does a whole home generator cost in Louisiana?
The cost of a whole home generator installation in Southern Louisiana typically ranges from $12,000 to $22,000+, depending on generator size, fuel type, electrical upgrades, and site conditions.
For example, Kohler air-cooled models such as 20 kW and 26 kW units start in the $6,000 to $8,000 range for equipment alone. Larger liquid-cooled systems designed for bigger homes or small businesses start significantly higher. Final installed cost includes the generator, transfer switch, concrete pad, electrical labor, gas connections, permitting, and inspection requirements.
During your consultation, we perform a full load calculation and site evaluation to provide an accurate, property-specific estimate.
Can a generator power my entire house?
Yes, a properly sized standby generator can power your entire home during an outage.
Most homes in St. Tammany Parish are well supported by 20 kW or 26 kW air-cooled systems, while larger homes or properties with multiple HVAC systems may require 24 kW or 30 kW liquid-cooled units. The correct size depends on your electrical load, square footage, and how many high-demand appliances you want running at the same time. Additionally for cost-saving, you can select only certain items to be on backup.
During your consultation, we perform a detailed load calculation to determine whether full-home coverage or prioritized circuit coverage is the most efficient and cost-effective solution for your property.
How long can a whole home generator run during an outage?
A whole home standby generator can run as long as it has a steady fuel supply and is properly maintained. Most residential systems in St. Tammany Parish are connected to natural gas or liquid propane, allowing them to operate continuously during extended outages.
During hurricane-related outages, generators can run for days if needed. Routine maintenance and proper fuel supply are critical to ensure safe, reliable operation during prolonged power interruptions.
Can a generator run central air conditioning?
Yes. A properly sized standby generator can power central air conditioning along with other essential appliances.
Many homes in Mandeville and Covington require enough capacity to handle one or more HVAC systems during summer outages. Systems such as 20 kW or 26 kW air-cooled generators typically support standard residential cooling loads, while larger homes with multiple HVAC units may require higher-capacity liquid-cooled systems.
A detailed load calculation ensures your air conditioning system can run safely without overloading the generator.
What fuel does a whole home generator use?
Most whole home standby generators in Southern Louisiana operate on natural gas or liquid propane.
Natural gas is common in areas like Mandeville, Metairie, and Kenner where municipal gas lines are available. Propane is often used in more rural parts of St. Tammany and Tangipahoa Parish.
Fuel type affects installation planning, operating cost, and long-term performance. During your consultation, we evaluate available fuel sources and recommend the most reliable option for your property.
What is the difference between air-cooled and liquid-cooled generators?
Air-cooled generators are the most common residential option and are typically used in the 20 kW to 26 kW range. They are efficient, reliable, and well suited for standard whole home applications.
Liquid-cooled generators are designed for larger homes or small commercial properties that require higher output, such as 24 kW or 30 kW systems. These units feature industrial-grade engines and are built for heavier, long-duration loads.
The right choice depends on your electrical demand, property size, and long-term power needs.
Do generators increase home value in Louisiana?
In South Louisiana, whole home standby generators are often viewed as a valuable upgrade due to hurricane risk and extended power outages.
While the exact return on investment varies, many homeowners find that backup power improves marketability and buyer confidence, especially in areas like St. Tammany Parish and Jefferson Parish where storm preparedness is a priority.
Beyond resale value, the primary benefit is reliability, comfort, and protection of your home during outages.
