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About GenerX Generators

At GenerX Generators, we do not just install generators. We deliver lasting protection for your home and your peace of mind. Founded by Mark Costis, we have proudly served Florida homeowners for over 20 years, completing more than 20,000 installations across the state. In 2023, we brought that same trusted experience to Nashville and Memphis, expanding our reach while keeping our values firmly rooted in family and service.

GenerX Team

Built Different.
Built Better.

What sets us apart? We do everything in house. From sales and permitting to installation and long-term maintenance, every step is handled by our own expert team. No subcontractors. No gaps in quality. No handoffs. Most generator companies outsource labor. We do not.

We are now a part of the Canter Power network, which has allowed us to build the largest generator staff in the Southeast.

Born in Florida.
Built for Storm Season.

As a company headquartered in Florida, we know backup power like few others can. Our staff lives with the same power grid vulnerabilities, the same storm threats, and the same hurricane seasons as our customers.

With seven branches across the state, our team brings decades of hands on experience navigating outages, storm prep, and post hurricane recovery. We do not just understand the impact of severe weather. We have built our business around helping families stay safe through it.

A Family Focused Company With Unbeatable Value

At GenerX, family comes first. That includes yours. We understand how vital power is during life’s most unpredictable moments, which is why we deliver fast, thorough, and affordable solutions with a level of care that makes our customers feel like family. With more than 1,200 Google five star reviews — the most of any generator installer — and pricing that beats outsourced competition, we offer something no other provider can match:

More experience. Better reviews. Faster service. All done in house at rates competitors cannot touch.

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Why Choose Generx?

We have built the largest dedicated generator staff in Florida, and we are proud to keep our team close and our standards high.

Everything In-House

From sales and permitting to installation and maintenance, every step is handled by our own expert team. No subcontractors.

20+ Years of Experience

Over 20,000 installations across Florida with trusted expertise since our founding.

Service & Maintenance

Unlike others, we service and maintain generators. We have the largest Generac-certified service team in the Southeast to keep your investment running longer.

Value & Price Leadership

Our business model is designed to provide high quality installs at prices competitors cannot match.

Where We Serve

GenerX proudly serves homeowners across Florida, and now brings our renowned expertise to Tennessee, covering the Nashville and Memphis metro areas. Whether you are preparing for hurricane season or protecting your family from ice storms, we have got you covered fast.

Florida

Tennessee

Arkansas

Kentucky


FAQs

What is the difference between an automatic air-cooled generator and an automatic liquid-cooled generator?

The engines!


Air-cooled generators come with engines that use fans to force air across the engine for cooling, while liquid-cooled generators use enclosed radiator systems for cooling, similar to an automobile. Generally, liquid-cooled engines are used on larger kW generators due to the larger engines required for the higher power output.

How does the Generac OHVI® engine compare to air cooled engines used in other brands of standby generators?

Unlike other engines used in backup power generation, Generac OHVI engines are made specifically for generators. They are engineered to run for the long periods of time required during a severe power outage or on a job site, utilizing the same type of pressurized oil lubrication used to give automobile engines long and trouble-free lives.

What is a GenerX installed automatic standby generator?

A GenerX installed automatic standby generator provides a complete (or partial – your choice) backup electrical system that operates whether you are home or away. By continuously monitoring your electrical utility feed, the generator automatically starts and then supplies power to your entire home or business – all within seconds of detecting an outage!


Once the storm is passed and the utility power is restored, the generator shuts itself off and waits for the next outage. Home standby generators operate on CLEAN and economical natural gas or liquid propane gas. Commercial & Industrial customers have the option of Generac generators powered by diesel, natural gas or bi-fuel /dual fuel (diesel and natural gas) engines.

What’s the advantage of an aluminum enclosure?

In addition to its sturdy galvanized steel enclosure with RhinoCoat, Generac is one of the few companies to offer premium aluminum enclosures for its residential standby generators. Aluminum enclosures are naturally rust and corrosion resistant. For salt air or high humidity conditions, aluminum is highly recommended to ensure decades of worry free service.

How does the Generac OHVI® engine compare to air cooled engines used in other brands of standby generators?

Unlike other engines used in backup power generation, Generac OHVI engines are made specifically for generators. They are engineered to run for the long periods of time required during a severe power outage or on a job site, utilizing the same type of pressurized oil lubrication used to give automobile engines long and trouble-free lives.

Why should I buy an automatic standby generator instead of a portable generator?

Consider this scenario. You buy a portable generator and a few weeks later, the lights go out. If you want to restore your power you’ll need to head out to the garage, start the generator, then run extension cords through your house to the appliances you want to use. Even after all that is done, you still won’t have air conditioning.

If you had a permanent standby generator, it would kick on automatically within seconds of a power outage. These generators run on your home’s natural gas or LP fuel supply. They are less expensive to operate than gasoline and do not need to be refilled. Whether you’re home or away standby generators provide protection 24/7. The generator will turn itself off when utility power returns.

Plus, when properly installed outside your home a standby generator presents less risk from carbon monoxide poisoning than running a portable generator in your garage.

Can an automatic standby generator replace utility service?

No…the generator fuel costs would be much more expensive than buying power from the utility company since their cost to produce electricity is divided among thousands of customers.

How do I correctly size a generator for my home?

The most logical way to determine your needs is to envision your home without power. Some outages may be short in duration, while others could last for days or weeks. What would your family miss during an outage?
With the broadest product line available, essential circuit coverage starts with the economically priced Generac CorePower™ Series. Other systems are available to cover virtually any application:

Essential Circuit Coverage – Generac takes the guesswork out of sizing by offering prepackaged Guardian Series generator systems. The generator is paired with a transfer switch containing a predetermined number of circuits based on the generator’s kW power rating. Each circuit is directly connected to a matched circuit on the home’s main circuit breaker panel, providing electricity to that specific appliance or area of the home. For example, ten circuits are supplied for the 8 kW generator. With this system, you could connect (1) lights and TV in the family room, (2) microwave and lights in the kitchen, (3) refrigerator, (4) power to the bathroom, (5) computer and home office, (6) garage door opener, (7) air conditioner, and (8) furnace.

Managed Whole House Coverage – You can get more coverage with less generator, up to whole house coverage, by pairing a smaller generator with one of Generac’s Nexus™ load shedding switch options. This creates a managed power solution where non-essential circuits are shed when the generator approaches maximum capacity. They are cycled back on when essential circuits no longer require power, so all circuits receive power at different times.

Complete Whole House Coverage – Easily cover every circuit in your home by pairing one of Generac’s larger kW units and the proper transfer switch to provide full coverage. No circuit is ever left uncovered, so every appliance is available every minute.

Can I install the generator myself?

As an option, Generac offers the Guardian Series systems prepackaged and pre-wired with comprehensive installation instructions. You could perform the simpler site preparation steps and have a professional make the electrical panel and fuel connections, or you could complete the entire installation yourself. However, for safety reasons and to ensure adherence to all local, state and national electrical codes, particularly for non pre-wired or larger systems, Generac recommends you use an authorized Generac dealer or licensed contractor.

Do they have to be maintained?

Yes, simple maintenance is required. All generators require periodic oil and filter changes to ensure maximum performance for years of reliable service. Preventative maintenance kits are available and many Generac dealers offer annual maintenance contracts for a worry-free ownership experience. Refer to the owner’s manual for routine maintenance procedures and schedules.

What type of oil should I use?

An SAE rated high detergent oil that meets API Service Class SF requirements for gasoline engines, similar to your car. Refer to your owner’s manual for details.

What happens if the generator gets overloaded?

Generac generators are equipped with overload protection. In the rare event of an overload, the generator’s circuit breaker will trip, disconnecting the unit from the load. Simply correct the overload and reset the breaker in the generator.

I no longer have my Owner’s Manual, how can I get another copy?

Owner’s manuals and other technical / repair information can be downloaded from our Manual Search or call 1-888-GENERAC.

Let’s Power Up

Want to learn more about how GenerX delivers faster, smarter, and more affordable protection? Explore our generator solutions or schedule a consultation today.