Electrical Generators
Electrical Generators | Generators | Electrical | Elizabethton
When the lights go out in Elizabethton, HEP is ready with rugged, high-efficiency generators that keep homes humming and businesses open. Our local technicians size each system to your exact needs, handle every detail of installation, and walk you through simple, stress-free operation. Because we’re neighbors first, we’re on call 24/7 for routine maintenance or rapid-response repairs—so you’re never left in the dark.
Whether you want seamless whole-house backup or a compact unit for critical circuits, HEP delivers unmatched expertise, competitive pricing, and friendly service rooted right here in Carter County. Discover how easy reliable power can be and let our team tailor a solution that fits your life, your budget, and the unpredictable Tennessee weather.
FAQs
What size generator do I need for my Elizabethton home or business?
Generator size is determined by the total wattage of the appliances and systems you want to power. For most homes in Elizabethton, a 14–22 kW standby unit will run all critical loads (refrigerator, HVAC, lights, sump pump, internet, and a few receptacle circuits). Small cabins might need only 7–10 kW, while larger residences or small businesses running HVAC, point-of-sale equipment, and security systems may require 25–60 kW. We perform an on-site load calculation—measuring starting (surge) and running watts—to recommend the right capacity, preventing overloads while avoiding overspending on an oversized unit.
Which fuel type should I choose: natural gas, propane, or diesel?
• Natural gas is the most convenient in Elizabethton neighborhoods that have city gas lines. It offers unlimited runtime and the cleanest emissions but requires sufficient supply pressure (typically 4–7 in. WC). • Propane (LP) is ideal in rural Carter County where gas lines are unavailable. A 250–500 gal tank can provide 3–10 days of run time, burns clean, and stores indefinitely. • Diesel delivers high power density and is common in larger commercial generators (30 kW+). Fuel is widely available, but tanks must be treated to prevent algae and meet NFPA 110/Local Fire Marshal regulations. Our team evaluates fuel availability, runtime expectations, and local code requirements to help you pick the best option.
How often does my generator need maintenance, and do you service units in Elizabethton?
All standby generators require maintenance every 6–12 months or after 100–150 operating hours—whichever comes first. Service includes oil and filter change, spark plug replacement, valve adjustment, battery load test, air filter inspection, and running a full transfer test. Because East Tennessee's pollen, humidity, and seasonal temperature swings can stress engines, we recommend biannual checks (spring and fall). We have factory-trained technicians based right here in Elizabethton who offer one-time tune-ups or affordable annual maintenance contracts that keep your warranty intact and ensure your generator starts when the grid fails.
Will a standby generator start automatically when the power goes out?
Yes. A properly installed standby system includes an automatic transfer switch (ATS). The ATS monitors utility voltage 24/7; when it senses an outage for typically 3–10 seconds, it signals the generator to start, then transfers the load once the generator reaches proper voltage and frequency. When utility power is restored and stable, the ATS switches back and allows the generator to cool down before shutting off. Homeowners in Elizabethton don’t need to be present—so even if you’re away at a Vols game or on vacation, your sump pump, refrigerator, and security system stay powered.
Do I need permits or inspections to install a generator in Elizabethton or Carter County?
Yes. The City of Elizabethton requires electrical and, if applicable, gas permits before installation. Our licensed electricians submit a load calculation, site plan, and specifications to the Building & Codes Department. Propane or natural-gas hookups also require inspection by the local fuel provider or the state gas inspector. In unincorporated Carter County, permitting is handled through the county’s Building and Zoning office, but electrical inspections are still mandatory. We manage the entire permitting process, coordinate with TVA and BrightRidge (the local utility), and schedule final inspections so your installation meets NEC, NFPA 37, and local noise-abatement ordinances.
How loud are modern generators, and where should I place mine?
Most residential standby units operate at 60–70 dB(A) at 23 ft—about the same as a central air conditioner. To minimize noise for you and your neighbors, we site the generator: 1. At least 5 ft from building openings and 18 in from the exterior wall, per manufacturer and NEC guidelines. 2. Away from bedroom windows and property lines when possible, observing Elizabethton’s 7 a.m.–10 p.m. noise limits (no more than 70 dB at the property line). 3. On a concrete or pre-cast composite pad to reduce vibration. We also offer sound-attenuating enclosures and landscaping recommendations—like evergreen shrub screens—to blend the unit aesthetically while maintaining required clearances for service access.