When severe Midwest storms, ice, or grid failures knock out power across Evansville, Newburgh, Louisville, and surrounding communities, a Generac whole-home standby generator ensures your household never skips a beat. Unlike portable units that require manual setup and refueling, a permanently installed Generac standby generator connects directly to your home’s electrical panel and existing natural gas or LP fuel line—automatically restoring power within seconds of an outage.
For over 50 years, A+ Derr Heating & Cooling has been the fourth-generation, family-owned name Kentuckiana homeowners trust for home comfort and reliability. Our seasoned, licensed electricians handle everything from load sizing and permitting to turnkey installation, repair, and seasonal maintenance.
Why Choose a Generac Whole-Home Standby Generator?
Generac is the #1 selling brand of home backup generators in North America, engineered to deliver dependable, hands-free protection year-round:
- Automatic 24/7 Power Protection: Detects utility power loss immediately and switches your home over to backup power within seconds—even if you are away on vacation.
- Seamless Fuel Supply: Runs directly off your home’s existing natural gas or liquid propane (LP) supply, eliminating the hassle and safety risks of storing gasoline cans or refueling in bad weather.
- True Power™ Technology: Delivers clean, stable electricity (less than 5% total harmonic distortion) safe for sensitive electronics, smart appliances, medical equipment, and modern variable-speed HVAC systems.
- Mobile Link™ Remote Monitoring: Check your generator’s status, maintenance alerts, and exercise schedule right from your smartphone, tablet, or computer anywhere in the world.
- All-Weather Durability: Built with a rugged, corrosion-resistant aluminum enclosure (RhinoCoat™ finish) designed to withstand freezing winters, heavy rain, and high winds.
Comprehensive Generac Generator Services
Generac Generator Installation & Replacement
Sizing a standby generator properly is critical to ensuring it can handle your home’s electrical load without overloading. Our licensed electricians perform a thorough on-site power assessment to recommend the right Generac unit—whether you want essential circuit coverage or whole-house protection including central air conditioning, sump pumps, refrigerators, and well pumps.
- Complete electrical load calculation and system sizing
- Gas line coordination, concrete/composite pad placement, and Automatic Transfer Switch (ATS) wiring
- Full startup testing, homeowner walkthrough, and warranty registration
- Safe removal and replacement of outdated or undersized standby generators
Generac Generator Repair
If your standby generator fails to start during a weekly self-test, displays an error code, or isn’t transferring power properly, A+ Derr’s trained technicians can diagnose and resolve the issue quickly. We service all Generac air-cooled and liquid-cooled residential models, stocking common replacement parts to restore your backup protection fast.
Preventative Generator Maintenance
Just like your furnace or air conditioner, a standby generator relies on routine care so it’s ready the moment an outage strikes. Our preventative maintenance visits include:
- Oil and oil filter changes
- Air filter and spark plug inspection/replacement
- Battery load testing and terminal cleaning
- Transfer switch operation test and simulated power-outage check
- Firmware updates and enclosure inspection
What Happens During a Power Outage Without Backup Power?
- HVAC & Climate Control Loss: Extreme summer heat or sub-freezing winter temperatures can quickly make your home unsafe and put pipes at risk of freezing.
- Flooded Basements: Without power, electric sump pumps stop working during the exact heavy rainstorms when you need them most.
- Food Spoilage: Refrigerators and freezers begin losing safe temperatures within hours, costing hundreds of dollars in groceries.
- Medical & Work Disruptions: Home medical devices, Wi-Fi networks, home offices, and security systems go offline when the grid goes down.
Schedule Your Free Generac Generator Estimate Today
Don’t wait until the next storm warning to think about backup power. Contact A+ Derr Heating & Cooling for expert Generac generator installation, replacement, repair, or maintenance across Southwestern Indiana and Northern Kentucky.
- Call Us: (812) 200-0727 (24/7 Customer Support)
- Service Areas: Evansville, IN • Newburgh, IN • Louisville, KY • Surrounding Kentuckiana & Tri-State Communities
- Book Online: Request Your Free Generator Estimate
