Power You Can Count On When the Grid Goes Down
Generator Installation in Southern NH
—VETERAN OWNED—
Serving Homeowners in Southern NH
A veteran-owned business with over 30 years of experience, Jolt Electric & HVAC installs whole-home standby generators and backup power systems for homeowners and businesses throughout Southern New Hampshire. NH winters mean ice storms, wind events, and outages that can stretch for days. A properly installed generator means the lights stay on, the heat keeps running, and your home stays livable no matter what the weather does.
We handle the full installation: sizing the generator, installing the transfer switch, connecting to your fuel source, and testing the system before we leave. No subcontractors for the electrical work, no handoffs, no gaps.
Generator Installation Services for NH Homes and Businesses
Whole-Home Standby Generator Installation
A standby generator connects directly to your electrical panel through an automatic transfer switch. When utility power fails, the generator detects the outage and starts automatically, typically within seconds. When power returns, it shuts down and the system resets on its own. You don't have to be home. You don't have to do anything.
Standby generators run on natural gas, propane, or liquid propane. We assess your fuel availability and help you select a generator sized to your home's essential loads or full-load demands. We'll help you compare options and choose the right unit for your budget and coverage goals.
Transfer Switch Installation
The transfer switch is the critical safety component in any generator installation. It isolates your home from the utility grid while the generator is running, preventing back-feed that could injure utility workers or damage your equipment.
Automatic transfer switches handle this on their own. Manual transfer switches are a lower-cost option for homeowners who prefer more control and don't need full automation. We don't install generators without a proper transfer switch.
Generator Sizing
Undersized generators leave circuits unprotected. Oversized ones waste fuel and wear faster than they should. Proper sizing starts with a load calculation: what do you actually need to run during an outage?
Covering only essentials (heat, refrigerator, lights, a few outlets) requires a smaller unit than full-home coverage. We work through this with you before recommending anything.
Generator Maintenance and Annual Service
A standby generator is a mechanical system that needs regular service to start reliably when it matters. Skipping maintenance is the most common reason a generator fails to start during an outage.
Ask us about ongoing service options when you schedule your installation quote.
Commercial Generator Installation
Businesses can't afford extended downtime. We install commercial-grade standby generators for offices, warehouses, retail spaces, and multi-unit buildings as part of our commercial and industrial electrical work.
Generator circuits, automatic transfer switches, and system testing all handled in-house.
Why Homeowners Choose Jolt
Locally Owned
and Operated:
We live and work where you do and are invested in the communities we serve.
5-Star
Customer Reviews:
We consistently earn 5-star ratings from our satisfied customers.
Fully Licensed & Insured:
We meet all state requirements and are fully insured for your peace of mind.
Speak with a New Hampshire Home Electrician
Ready to discuss your home electrical project? Call us at (603) 402-1955 or click below to request a project quote. You can also ask our team about available financing options for residential electrical services.
Frequently Asked Questions
Yes. Jolt Electric & HVAC provides residential electrical services for homeowners throughout Southern New Hampshire, including Litchfield, Manchester, Amherst, Nashua, Merrimack, Bedford, Hudson, and nearby towns.
​Yes. Jolt Electric & HVAC provides electrical panel services for homeowners. If your lights flicker, breakers trip frequently, or you are adding new appliances or an EV charger, our electricians can inspect your system and recommend the best solution for safe, reliable power.
Yes. Jolt Electric & HVAC installs Level 2 EV chargers for homeowners throughout Southern New Hampshire. Our team can help you choose the correct charger for your vehicle, ensure proper wiring and panel capacity, and complete a safe, code-compliant installation.
You can schedule residential electrical service by contacting Jolt Electric & HVAC online or calling (603) 402-1955. You can also request a quote through the website.
Request an Estimate
Whether you need electrical, heating, or cooling services, Jolt Electric is here to help. Our team is dedicated to delivering high-quality work, transparent pricing, and unparalleled customer service to homeowners and businesses throughout New Hampshire.
What Our Customers Say
At Jolt Electric & HVAC, we prioritize quality work and strong customer relationships, and it shows in our many outstanding reviews. We aim to deliver that same level of excellence for you.
Service Area:
We proudly serve homeowners and businesses throughout Southern New Hampshire, including Litchfield, Nashua, Londonderry, Milford, Merrimack, Hudson, Manchester, Amherst, Hollis, and Bedford.