Professional Service
Professional Service | Generators | Electrical | Jonesborough
When unpredictable East Tennessee weather knocks the power out in Jonesborough, homeowners and businesses alike trust HEP’s seasoned electricians to keep everything running with dependable generators. From cozy cottages downtown to sprawling farms on the outskirts, we size, source, and install backup power systems that match each property’s exact load requirements—so lights, HVAC, and critical equipment stay on without a hiccup.
Our licensed team handles every phase, including permitting, gas line coordination, and routine maintenance that extends the life of your investment. Customers love our clear, upfront pricing, 24/7 emergency response, and the peace of mind that comes from working with a company that’s been safeguarding local properties for decades. Choose HEP, and discover how effortless reliable power can be.
FAQs
What types of generators do you install and service in Jonesborough?
We work with a full range of residential and light-commercial generators, including portable units, residential air-cooled standby systems from 7 kW to 26 kW, and liquid-cooled commercial generators up to 150 kW. Our technicians are factory-trained on major brands such as Generac, Cummins, Briggs & Stratton, and Kohler, so we can install new equipment, perform warranty repairs, and provide ongoing maintenance for almost any model already in service in the Jonesborough area.
How often should my standby generator be serviced?
For most air-cooled home standby generators, manufacturers recommend a full service once every 12 months or after 100–150 hours of run time—whichever comes first. Liquid-cooled or commercial units may need semi-annual visits. A routine service includes an oil and filter change, spark-plug inspection or replacement, valve adjustment (if required), battery test, firmware updates, and a load-bank test to verify the generator can produce its rated output. Because Jonesborough’s humid summers and cool winters can stress equipment, sticking to the recommended schedule is the best way to ensure reliable starts and to keep your warranty intact.
Can you help me size a generator for my home or business?
Absolutely. We perform an on-site load analysis where we list every critical circuit, HVAC component, and motor load you want to power during an outage. Using sizing software and demand factors, we calculate starting and running wattage to recommend a generator that meets code and provides at least 20 % headroom for future expansion. For homes, typical sizes are 14–24 kW; for small businesses, 22–60 kW is common. We then propose transfer-switch options and fuel solutions—natural gas, propane, or diesel—based on availability in your part of Jonesborough.
Do you handle permits and code compliance for generator installation in Washington County?
Yes. Generator installations in Jonesborough must comply with the current National Electrical Code (NEC), local amendments, and Washington County zoning rules. Our team secures all electrical and mechanical permits, files any required drawings, and schedules inspections with the county building department. We also coordinate with utility providers for natural-gas meter upgrades and with Tennessee One Call to mark underground utilities before we pour the concrete pad or run conduit. You receive a copy of the closed permit packet for your records and insurance.
What happens during a power outage—will the generator start automatically?
When utility power drops below 60 % of nominal voltage for more than a few seconds, the automatic transfer switch (ATS) signals your standby generator to start. After it reaches operating speed and voltage—usually within 10–15 seconds—the ATS disconnects the utility feed and transfers the load to the generator. When power is restored and stable for about five minutes, the ATS automatically reverts to utility power and shuts the generator down after a brief cool-down cycle. Throughout the year, the system also performs a weekly exercise run to keep the engine lubricated and to alert you to any faults.
What is the cost of installing a whole-home generator in Jonesborough?
Pricing depends on generator size, fuel type, site conditions, and whether electrical upgrades are needed. As a general guide, a turnkey installation of a 14 kW natural-gas standby generator with a 200-amp ATS typically ranges from $9,500 to $12,000 in Jonesborough, including permits and a basic concrete pad. Larger 22–26 kW units can run $12,500 to $16,000. Propane or diesel systems require additional tank or day-tank costs. We provide free on-site assessments and a detailed written quote that breaks down equipment, labor, fuel work, and any optional annual maintenance plan so you know exactly what to expect before we start.