Backup Generator
Backup Generator | Generators | Electrical | Cookeville
When a Tennessee storm rolls across the plateau, Cookeville homeowners trust HEP’s certified electricians to keep the lights on and the fridge humming. Our team specializes in installing, servicing, and monitoring whole-home generators that automatically power up the moment the grid goes down, sparing you from spoiled groceries, frozen pipes, or nights spent in the dark.
From on-site load analysis to seamless fuel hookups and annual tune-ups, we handle every detail—as well as the permits—so you can relax knowing backup power is always at the ready. With transparent pricing, 24/7 emergency support, and the area’s most comprehensive warranties, HEP is Cookeville’s one-call solution for dependable generators and true peace of mind.
FAQs
Why should I install a backup generator for my Cookeville home or business?
Cookeville experiences severe thunderstorms, the occasional ice storm, and grid overloads that can leave you without power for hours—or even days. A backup generator automatically restores electricity, keeping critical systems such as HVAC, medical devices, refrigeration, lights, and internet running. For businesses, it prevents downtime, protects inventory, and maintains customer confidence. In short, a generator provides safety, comfort, and financial protection during any outage.
What size generator do I need?
Generator size is based on the total running wattage of the appliances and systems you want to power. A whole-house solution for a typical 2,000–2,500 sq ft Cookeville home often falls in the 18–24 kW range, while an essentials-only setup (refrigerator, HVAC fan, lights, sump pump, internet) might be 7–10 kW. Commercial facilities may require 30 kW to 150 kW or more. Our licensed electricians perform a free load calculation to recommend the right capacity so you avoid overloads and overspending.
How long does installation take, and are permits required in Cookeville?
Once permits and utility approvals are in hand, residential installations usually take one to two full days, including placement of the generator pad, electrical wiring, fuel line connections, and commissioning. In Cookeville and the rest of Putnam County, an electrical permit and—if fuel gas is involved—a gas permit are mandatory. We handle all paperwork with the Cookeville Building Codes Department, schedule inspections, and coordinate with your gas provider or propane company to streamline the process.
What maintenance does a standby generator need?
Most standby units perform a weekly 10-15-minute self-test, but professional service is still essential. Manufacturers recommend a full maintenance visit every 6–12 months or every 100 operating hours, whichever comes first. Service includes oil and filter changes, spark-plug replacement, battery and charger tests, air-filter inspection, fuel-system leak checks, and a load-bank test. Regular maintenance keeps your warranty valid and ensures the generator is ready when a Cookeville storm hits.
Which fuel type—natural gas, propane, or diesel—is best for this area?
Natural gas is the most convenient choice within Cookeville city limits because it ties directly into the municipal gas line, eliminating the need for on-site fuel storage. Rural residents without gas service often choose propane; a 250–500 gallon tank can run an average 20 kW unit for several days. Diesel is common for larger commercial systems (50 kW+) due to its high energy density and easier onsite storage regulations. Our team will review fuel availability, runtime requirements, and budget to help you decide.
Will the generator start automatically during a power outage?
Yes. Our systems are paired with an automatic transfer switch (ATS) that constantly monitors utility power. When an outage is detected, the ATS signals the generator to start—usually within 10 seconds—and reroutes your electrical panel to generator power. When utility service is restored, the ATS reverses the process, cools down the engine, and returns the generator to standby mode. You can also add remote monitoring so you receive phone or email alerts whenever the generator runs or needs service.