Standby Generator Installation in Southern NH
Never lose heat, water, or power in a NH storm. Automatic whole-home standby generators installed by licensed electricians, with 0% financing and a free written estimate.
Never Lose Power in a NH Storm
New Hampshire loses power more often than most of the country due to ice storms and nor'easters. A whole-home standby generator turns on automatically within seconds of an outage and runs your entire home until utility power returns.
A Trusted Southern NH Choice, Family-Owned Since 1928
Automatic Operation
Standby generators detect an outage and start automatically. Power restored in 10 to 20 seconds.
Generac and Kohler
We install Generac and Kohler generators, two of the best-known names in home standby power.
Licensed Electricians
Generator installation requires a licensed electrician and a licensed NH gas fitter for the gas connections. A.J. LeBlanc Heating holds both licenses.
Complete Installation
We handle everything: equipment, electrical, gas line, transfer switch, permits, and inspections.
Whole-Home Standby Generator Systems
A whole-home standby generator protects your entire house including your heating system, well pump, and all appliances.
- Generac and Kohler 11kW to 26kW systems
- Automatic transfer switch included
- Runs on natural gas or propane
- Protects HVAC, well pump, and all appliances
- 10-year warranty on Generac Guardian series
Generator Service and Maintenance
Generators require annual maintenance to ensure they start reliably when needed. We offer comprehensive annual maintenance.
- Annual maintenance available
- Oil and filter changes
- Battery and starter system checks
- Transfer switch inspection and testing
How We Price Generator Installation
Free, No-Pressure Estimates
An electrician and gas fitter run a load calculation, check your panel and gas or propane setup, and quote a generator sized to your home's actual load. They are not on commission. No charge, no obligation.
All-In Project Pricing
One number covers the generator, automatic transfer switch, electrical and gas-line work, concrete or gravel pad, permits, and inspection.
Annual Maintenance
Annual maintenance keeps your generator ready when you need it. Oil change, filter, battery check, transfer-switch inspection.
0% Financing Available
Spread the cost with 0% promotional financing on qualifying installations. Ask your sales team about current offers, eligibility, and available terms.
Reviews From Southern NH Homeowners
Dennis was excellent. Very knowledgeable and efficient with his work. Solved the problem quickly and in a timely manner.
David SmithSatisfied CustomerOur entire experience with A.J. Leblanc Heating from start to finish was flawless. The salesman was courteous, professional and worked with us to meet our needs. The installers were on time, knowledgeable, prepared, efficient and friendly. Everything presented at the sales meeting and during the installation was exactly as agreed to. No surprises, last minute changes or problems. We have talked to the office a couple of times since the installation. They are equally friendly and knowledgeable. The surprise package of cookies and mugs after all was done was an added bonus.
Joseph FlanaganSatisfied CustomerThese people are the best. I have been a customer for years. I have always received excellent, courteous, service. They are on time, their technicians are well trained and experienced and leave the work site neat and clean when done.
Roland RamponiSatisfied CustomerRead more reviews on our testimonials page.
Free Generator Installation Estimate
Call or fill out the form. We will assess your home's power needs, recommend the right system size, and provide a written estimate.
Serving Bedford, Manchester, Nashua, Concord, Merrimack, Hooksett, Londonderry, Derry, Bow, Goffstown, Amherst, Auburn, and surrounding towns.
Frequently Asked Questions
How much does standby generator installation cost in NH?
Whole-home generator installation in Southern NH typically runs $10,000 to $24,500 depending on generator size, distance to gas supply, and electrical panel requirements.
What size generator do I need?
The right size depends on your home's electrical load. A 14kW generator typically covers a 2,000 to 2,500 square foot home. We perform a load calculation as part of the free estimate.
Do generators run on natural gas or propane?
Generac and Kohler standby generators run on either. If you have natural gas service, the generator connects directly to your gas line. Propane requires a dedicated tank.
How long does generator installation take?
Most installations are completed in two to three days. Gas line and electrical work happen in parallel to minimize the timeline.
Get in Touch
Fill out the form and we'll get back to you. Usually the same business day. For emergencies, call us directly.
Contact Information
Mon-Fri: 8am-4:30pm
Evenings & Weekends: Emergency Service
24/7 Emergency Service
No heat? No hot water? Call 603-623-0412 any time.