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Avatar for LaPlante Electric, Inc.
LaPlante Electric, Inc.
4.4(
71
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Madison, NH and surrounding areas

Approved

In business since 1991

Free estimates

Emergency services offered

"LaPlante's customer service was excellent. The contractors who came to install my generator were efficient, expert, and very willing to offer complete explanations as to what they were doing. I would recommend LaPlante any time."
Whole House Generac Generator 22 Kilowatt (KW)
Top View of a 22 Kilowatt (KW) Generac Generator
Internals of 22 Kilowatt (KW) Generac Generator
Back of 22 Kilowatt (KW) Generac Generator
200 AMP Whole House Transfer Switch

+8

Response time3 days
68 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for SW WOOD LLC
SW WOOD LLC
5.0(
1
)
Portable Generator - InstallPortable Generator - Repair

Serving Madison, NH and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

"I was very pleased with the work he did, he has a nice way of explaining things , I sure I will hire him again for other projects when needed he is a very pleasant person to deal with. Tank you Scott for being such a nice guy ."
4 neighbors recently requested a quote
Avatar for Saucier Electric, LLC
Saucier Electric, LLC
New to Angi
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Madison, NH and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

Saucier Electric, LLC is the premier electrical company serving Carroll County and surrounding areas for over a decade of experience. Our #1 goal as a company is having complete customer satisfaction and there is no job that is too big or too small. We offer both residential & commercial - If you really want the job done right, call Jacob today!

Gallery
2 neighbors recently requested a quote
Avatar for Deyab Electric, LLC
Deyab Electric, LLC
4.7(
23
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Madison, NH and surrounding areas

In business since 2003

Small jobs welcome

Credit card accepted

"Bobby showed up on time. Gave me a great price for a new box and new circuit breakers . He started we went skiing, when we returned he was finished and the work site was cleaner than when he arrived. I would recommend Bobby to anyone he is a throw back to when people took pride in their work."
Panelboard Box by SquareD
Weight Tree
Adirondack Ballroom
Soccer Arena Expansion
 Bobby D,GMC HD 2500,60' Bucket Truck, 12' Trailer

+28

Recommended by100%of homeowners
Avatar for Power Moves Electric, LLC
Power Moves Electric, LLC
5.0(
11
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Madison, NH and surrounding areas

Emergency services offered

"From the very beginning to the end the experience was exceptionally good. The price was great, professionalism top-notch and the work was extremely high-quality. We knew exactly what to expect along the way and I would recommend them to anyone."
Recommended by100%of homeowners
Avatar for JM Electric LLC
JM Electric LLC
4.5(
26
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Madison, NH and surrounding areas

In business since 1989

Free estimates

Emergency services offered

"The amount of work that needed to be done to our 1880 house was extensive. Joe listened to our needs and concerns and offered suggestions that improved our plans. His quote was very fair. He is easy to talk to, professional and honest. Caleb and Dylan who did the work were amazing to deal with. They were very knowledgable, worked hard, and were careful and patient dealing with the oddities of an old house. I highly recommend this company and will call on them for all my electrical needs."
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+15

Recommended by100%of homeowners
GSC Electric LLC
3.9(
133
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Madison, NH and surrounding areas

In business since 2005

Emergency services offered

Credit card accepted

"Installed at a seasonal camp with no roof ridge vents. Upstairs is used occasionally for sleeping and is unfinished, being there is no attic. During the day temperatures easily soar well above 100 degrees, making it impossible to cool with a window unit. Greg suggested putting in an exhaust vent fan on a thermostat to blow the heat outside and create ventilation upstairs. The wiring was quick and the installation smooth. And what a difference! The fan works great and you can feel the cool air flow coming up the stairs if the upstairs windows are closed. This was one of those things we should have done years ago. We're very pleased with the results."
Recommended by83%of homeowners
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Generator Install questions, answered by experts

With proper maintenance, a whole-house generator can last between 20 and 40 years. The specific lifespan depends on how often and for how long the generator is used, and some models may have their life expectancy rated in hours of operation. To maximize its lifespan, expect to spend around $150 to $300 per year for annual maintenance checks from a qualified technician. During these checks, a technician will inspect the engine filter, starting mechanism, fuel, lubrication, and coolant levels. Consulting your installer and choosing a low-impact fuel like natural gas or diesel can also help ensure your generator lasts as long as possible.

Carbon monoxide emissions aren’t only dangerous to human life, but they also harm our planet. While natural gas generators emit lower levels of CO than other fuel sources, there are still ways to reduce emission levels. For example, shop around for an eco-friendly generator that complies with current emission standards. Also, make sure your generator is serviced regularly to avoid CO buildup. 

If you have a transfer switch properly installed, the generator and main electrical power cannot feed the system at the same time. However, you should still shut off the power at your main circuit breaker panel before activating the generator. If you do that, you’ll simply need to shut off the generator and reset your circuit breaker once the local power comes back on.

Whole-house generators need to be installed on level ground several feet away from walls and other objects. Because they tap into the electrical system directly, they usually need to be close to your home electrical panel for a transfer switch installation. It also helps with installation if they are near to a gas line or propane tank installation.

It’s usually better to repair your generator if it isn’t working properly, as it will typically be much more affordable and should yield similar results. Generator repairs cost around $300 on average, while installing a new whole-house generator costs around $5,000 on average. The only exception is if you know your generator is reaching the end of its useful life, usually between 30 and 40 years. If you have an older generator, you could face multiple repairs in the coming years, which might mean that a full replacement will be more cost-effective over time.

The Madison, NH homeowners’ guide to generator installs

From average costs to expert advice, get all the answers you need to get your job done.