Generac — Premier Power Pro Protector Plus Expert
Never Lose Power Again.
Generator Installation & Service
Whole-Home Standby Generators — St. Johns · Flagler · Clay · Nassau · Duval
Jacksonville · Saint Augustine · Palm Coast · Ponte Vedra · Fernandina Beach · Orange Park · Middleburg & surrounding areas
Licensed, insured, and Generac-authorized. We handle everything — sizing, permitting, gas line, electrical hookup, and ongoing maintenance.
North Florida Experts for Generator Services
Installations You Can Depend On
Double A is your one-stop shop for the highest-quality Generac generators in North Florida. We have a wide selection of air-cooled and liquid-cooled generators that can power your home with ease.
Authorized Generac Premier Power Pro Dealer — Guardian & NextGen air-cooled generators from 18kW to 28kW.
Liquid-cooled standby generators from 26kW to 150kW+ for larger homes and light commercial properties.
Automatic transfer switch (ATS) included with every installation — your home switches to backup power in seconds.
All permits, gas line, and electrical hookup handled by our licensed team from start to finish.
Annual generator maintenance plans keep your system ready year-round — no charge estimate before any work begins.
What We Do
Complete Generator Services
From new installation to annual maintenance and emergency repair — we cover every aspect of generator ownership.
Standby Generator Installation
Whole-home and partial-home standby generator installation with automatic transfer switches. We install Generac, Kohler, and Briggs & Stratton systems sized precisely for your home or business.
Automatic Transfer Switch
An ATS detects an outage and starts your generator within seconds — automatically. No running outside in a storm. No manual switching. Just seamless, uninterrupted power.
Generator Maintenance
Annual tune-ups, oil changes, spark plug replacement, load testing, and battery checks. Preventive maintenance keeps your generator ready when a storm rolls in.
Generator Repair
Fast diagnosis and repair for all generator brands and models. We stock common parts to minimize downtime and get your backup power restored quickly.
Residential Generators
Protect your family, HVAC system, refrigerator, medical equipment, and home security systems. Never lose power during a Florida hurricane or tropical storm again.
Commercial Generators
Keep your business running during outages with properly sized commercial standby systems. We handle permitting, gas line connections, and electrical hookups end-to-end.
Not Sure What Size You Need?
We offer no-charge generator sizing consultations. Tell us about your home and we'll recommend the right system.
Free Resource
Generator Buying Guide
Air-cooled vs. liquid-cooled, sizing basics, ATS explained, fuel types, and what to expect from installation — all in one place.
Read the full guideKeep It Ready
Generator Maintenance Plans
Annual tune-ups, oil changes, battery tests, load testing, and priority storm response — everything your Generac needs to stay ready year-round.
View maintenance plansFind Your Fit
Generator Sizing Guide
Choosing the right generator size is critical. Too small and you'll overload it. Too large and you'll overpay. Here's a general overview — we'll size it precisely during your no-charge consultation.
Our entry-level whole-home solution. Powers critical circuits: lights, refrigerator, central AC, and select outlets. Great for most Florida homes.
Get a no-charge estimateThe most popular choice. Powers your entire home including central AC, water heater, kitchen appliances, and all lighting with room to spare.
Get a no-charge estimateFor large homes, multi-unit properties, or small businesses. Liquid-cooled options available. Handles heavy electrical loads with headroom to spare.
Get a no-charge estimateEvery estimate is based on a no-charge in-home load calculation — we size your system precisely before any commitment.
Generac — Premier Power Pro Protector Plus Expert
Generac Air-Cooled Generator Models
We install two premier Generac air-cooled lines — the proven Guardian Series and the next-generation NextGen Series. Both are backed by Generac's 5-year limited warranty and Double A's lifetime service support.
Generac Guardian Series — Air-Cooled
The Guardian Series is Generac's most popular residential standby generator line. Reliable, proven, and built for whole-home coverage. Available in 18kW and 22kW for most Northeast Florida homes.
Generac NextGen Series — Air-Cooled
Newest TechnologyThe NextGen Series is Generac's latest air-cooled platform — quieter, more fuel-efficient, and smarter than previous generations. Available in 18kW, 22kW, 24kW, 26kW, and 28kW. Ideal for larger homes or homeowners who want the latest technology.
Not Sure Which Model Is Right for You?
Our team performs a no-charge load calculation to match the exact right generator to your home. Call us or schedule a consultation today.
Why Double A
Northeast Florida's Most Dependable
Generator Company
Generac — Premier Power Pro Protector Plus Expert
As a Generac — Premier Power Pro Protector Plus Expert, we install, service, and warranty the most dependable name in home standby generators. You get factory-backed coverage and certified technicians.
Licensed & Fully Permitted
Every installation is performed by a licensed electrician and HVAC technician — fully insured and permitted through your local municipality. No shortcuts, no liability.
No-Charge Written Estimate
We provide a detailed written quote before any work begins. No hidden fees, no surprise change orders. The estimate we give is the scope we deliver.
Family-Owned Since 2003
Over 20 years serving Northeast Florida. We've installed hundreds of generators across St. Johns, Flagler, and Duval County — we know this market inside and out.
Full-Service Generator Team
From initial consultation and sizing to installation, annual maintenance, and emergency repairs — we are your one-stop generator company for the life of your system.
700+ Five-Star Reviews
Our customers speak for themselves. With 700+ five-star reviews across Google and Facebook, Double A is Northeast Florida's most dependable generator installer.
Is It Time?
Signs You Need a
Standby Generator
If any of these sound familiar, it's time to stop hoping the power stays on and start being prepared.
Don't Wait for the Next Storm
Generator lead times increase dramatically before and after major storms. The best time to install is before hurricane season — not during it. Call us today for a no-charge consultation and get on the schedule.
Family-Owned. Locally Dependable. Since 2003.
Anthony and Angie Schreiber built Double A on a simple promise: treat every customer like a neighbor. That's still how we operate — 20+ years later.
What Customers Say
Real Reviews from Real Customers
“Double A installed a Generac 22kW whole-home generator for us before hurricane season. The installation was clean, professional, and permitted. When the next storm hit, we didn't lose a single appliance. Best investment we've made in this house.”
“My husband is on oxygen and we needed a reliable backup power solution. Double A walked us through the options, installed the right generator, and set up the automatic transfer switch. Peace of mind is priceless — I can't thank them enough.”
“Great experience from quote to installation. They handled the permit, the gas line connection, and the electrical hookup. Everything was done in one day. Highly recommend Double A for any generator work.”
“We got three quotes and Double A was the most thorough. They came out, assessed our panel, sized the generator correctly, and explained everything. The install crew was on time, clean, and professional. Five stars without hesitation.”
Why Homeowners Choose Us
Double A – Home of the AC Bee's
Generac — Premier Power Pro Protector Plus Expert. As a Generac — Premier Power Pro Protector Plus Expert, we install, service, and repair the full Guardian and NextGen lineup — backed by factory warranty and 20+ years of Northeast Florida experience.
Customer Stories
Ponte Vedra Beach — St. Johns County
Whole-Home Generac 22kW — Before Hurricane Season
The Challenge
A family with two young children and a home office had experienced three multi-day outages in two years. Their portable generator couldn't power the AC, and working remotely during outages was no longer an option.
Our Approach
Double A performed a no-charge in-home load assessment, sized a Generac 22kW Guardian, handled all permitting with St. Johns County, coordinated the gas line extension, and completed the installation in one day.
Outcome
- Automatic transfer in under 10 seconds during the next storm
- Full home coverage — AC, refrigerator, home office, and all lighting
- Zero disruption to remote work during subsequent outages
- Generac 5-year factory warranty + Double A lifetime service support
Palm Coast — Flagler County
Generac 18kW for Medical Equipment Household
The Challenge
A retired couple — one of whom relies on oxygen equipment — needed a dependable backup power solution before Flagler County's storm season. Their existing portable unit required manual startup and couldn't run the HVAC.
Our Approach
Double A recommended an 18kW Generac Guardian with automatic transfer switch, sized to cover the HVAC system, oxygen concentrator, refrigerator, and essential lighting. Permits were pulled and the installation was completed within two weeks of the initial consultation.
Outcome
- Fully automatic — no manual action required during an outage
- Medical equipment protected around the clock
- Central AC maintained during summer storm outages
- Annual maintenance plan enrolled at installation
Nocatee — St. Johns County
Generac NextGen 26kW — New Construction Upgrade
The Challenge
A homeowner in a newer Nocatee community wanted a standby generator installed during a renovation. The home had a large HVAC system, pool pump, and EV charger — all of which needed to remain operational during outages.
Our Approach
Double A specified a Generac NextGen 26kW for the higher load requirements, coordinated with the builder's electrical contractor for panel integration, and managed all Flagler/St. Johns permitting. The generator was installed and commissioned before the renovation was complete.
Outcome
- Full home coverage including pool pump and EV charger
- Seamless integration with new construction electrical panel
- NextGen Wi-Fi monitoring — status visible from any device
- Enrolled in Double A's annual generator maintenance plan
Fleming Island — Clay County
Generator Replacement — Aging Unit After 12 Years
The Challenge
A homeowner's original standby generator had reached end-of-life after 12 years. It was failing weekly self-tests and had experienced two no-start events during actual outages. They needed a reliable replacement before the next storm season.
Our Approach
Double A diagnosed the existing unit, confirmed replacement was the right call, removed the old generator, and installed a new Generac 22kW Guardian on the existing concrete pad. The transfer switch was tested and recertified as part of the installation.
Outcome
- Old unit removed and new Generac installed on existing pad
- Transfer switch recertified — confirmed automatic operation
- Passed Clay County inspection on first submission
- Enrolled in annual maintenance plan to protect the new investment
Common Questions
Generator Installation FAQ
What is the difference between air-cooled and liquid-cooled generators?
Air-cooled generators (18kW–28kW) use an engine fan to dissipate heat — they're compact, lower maintenance, and ideal for most residential applications. Liquid-cooled generators (26kW–150kW+) use a coolant system like a car engine, making them better suited for larger homes, continuous-duty use, or commercial properties. Double A installs both.
How does an automatic transfer switch (ATS) work?
An ATS monitors your utility power continuously. When it detects an outage, it signals the generator to start and transfers your home's electrical load from the utility to the generator — typically within 10 seconds. When utility power is restored, the ATS transfers the load back and shuts the generator down. No action required from you.
What size generator do I need for my home?
Sizing depends on your home's square footage, HVAC system tonnage, and which circuits you want covered. Most Northeast Florida homes are well-served by an 18kW–22kW Generac Guardian. Larger homes or those with multiple HVAC systems, pool pumps, or EV chargers may need 24kW–28kW or higher. Double A performs a no-charge in-home load calculation to size your system precisely.
Does a standby generator require a permit in Florida?
Yes. Florida requires permits for standby generator installations — including electrical, mechanical, and gas permits depending on your county. Double A handles all permitting with your local municipality. You don't deal with the county offices.
How long does a generator installation take?
Most residential installations are completed in one to two days once permits are approved. Permit timelines vary by county — typically one to three weeks in St. Johns, Flagler, Duval, Clay, and Nassau Counties. Double A manages the entire permitting process.
What fuel does a Generac standby generator use?
Generac Guardian and NextGen air-cooled generators run on natural gas or liquid propane (LP). If your home has natural gas service, the generator connects directly to your gas line. If not, Double A can coordinate LP tank installation. No gasoline, no refueling during an outage.
What maintenance does a standby generator need?
Annual service is recommended — including oil and filter change, spark plug inspection, air filter replacement, battery test, transfer switch test, and a full load test. Your generator also runs a weekly self-test automatically. Double A offers annual maintenance plans to keep your system ready year-round.
Is financing available for generator installation?
Yes. Double A offers financing options to help make a whole-home generator accessible for your family. Ask about available plans when you call for your no-charge consultation — our team will walk you through what's available.
Why Double A
Shopping Around? Here's What Sets Us Apart.
Northeast Florida has no shortage of generator companies. Here's why thousands of homeowners in St. Johns, Flagler, and Duval County choose Double A over the rest.
Family-Owned Since 2003
Anthony and Angie Schreiber built this company from the ground up. When you call Double A, you're talking to the people whose name is on the truck — not a national call center.
Generac — Premier Power Pro Protector Plus Expert
We're not just a reseller. As a Generac — Premier Power Pro Protector Plus Expert, we provide factory-backed warranties, certified installation, and authorized warranty repairs — something many local competitors cannot offer.
We Install AND Service What We Sell
Some companies install and disappear. Double A services every generator we install — annual tune-ups, emergency repairs, and long-term maintenance plans. One company, start to finish.
No-Charge Written Estimate
We provide a detailed written estimate before any work begins. No bait-and-switch, no hidden fees after the job is done. The scope we quote is the scope we deliver.
Local Crews — Not Subcontractors
Every installation is performed by Double A employees — not subcontracted crews we've never met. That means consistent quality, accountability, and technicians who know Northeast Florida codes.
Financing Available
We offer financing options to help make a whole-home generator accessible for your family. Ask about available plans when you call for your no-charge consultation.
700+ Five-Star Reviews Across Northeast Florida
Our reputation is built one installation at a time. Read what St. Johns, Flagler, and Duval County homeowners say about working with Double A.
Coverage Area
Generator Service Across
Northeast Florida
St. Johns County
Flagler County
Duval County
Related Services
Complete HVAC & Generator Services
Generator Maintenance
Keep your Generac ready for the next storm. Annual tune-ups, oil changes, battery tests, and load testing.
Schedule generator maintenanceAC Repair
Your generator protects your AC — we repair it too. Same-day AC repair throughout Northeast Florida.
Schedule an AC repair callAC Installation
Pair a new high-efficiency AC system with your generator for complete home comfort and protection.
Request a no-charge AC estimateNot sure what size generator you need?
We perform a no-charge in-home load calculation and give you a written quote — no obligation.
Ready to Never Lose Power Again?
Call Double A today for a no-charge generator sizing consultation. We'll assess your home, recommend the right system, and give you an upfront quote — no pressure, no obligation.