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  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon14
    Verified generator installs reviews

Find Generator install pros in Loudon

Avatar for Electrical & Security Solutions, LLC
Electrical & Security Solutions, LLC
5.0(
13
)
Fixed Generator - InstallFixed Generator - Repair

Serving Loudon, NH and surrounding areas

Approved

In business since 2018

Free estimates

Credit card accepted

"Tyler and his crew were amazing! Professional, on time, great communication, and the work is top notch! From first visit to get an estimate to cleaning up the job site, perfect! Thank you and highly recommend to anyone that is looking for electrical work!"
Landscape lighting
Landscape lighting
Landscape lighting
Landscape lighting
Landscape lighting

+10

Response time7 hrs
Response rate100%
8 neighbors recently requested a quote
Avatar for Allpoints Electrical
Allpoints Electrical
5.0(
9
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Loudon, NH and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

"I have a very good impression of Mr. Morton and appreciate his efficiency and speed in getting my generator back in service. I have asked him to put me on his list for a yearly evaluation. I am trusting that the next time there is a power failure my generator will be back in operation."
Response time4 hrs
Recommended by100%of homeowners
Avatar for ECCO Electric, LLC
ECCO Electric, LLC
5.0(
7
)
Portable Generator - Install

Serving Loudon, NH and surrounding areas

Approved

In business since 2019

Free estimates

Customers say: Quick response

"Dustin is a reliable, easy-to-work-with, knowledgeable professional and I would recommend him to anyone! He quoted us a very fair price for a generator hookup and interlock kit installation, and was pleasantly surprised at how competitive his pricing is. He showed up exactly on time, maintained excellent communication throughout the process and 100% stands behind his work. If I need more electrical work done I will certainly be contacting Dustin again!"
Response time8 hrs
Recommended by100%of homeowners
Avatar for Beacon Electric
Beacon Electric
5.0(
6
)
Fixed Generator - InstallPortable Generator - Install

Serving Loudon, NH and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"I don’t usually share reviews, but Beacon Electric did such a fantastic job from start to finish that I had to share my experience!! They are friendly, extremely knowledgeable in their craft and made me feel so reassured thought the whole installation process. What a fabulous company with truly great people. I highly recommend!!"
Beacon Electric
Beacon Electric
Beacon Electric
Beacon Electric
Beacon Electric

+23

25 neighbors recently requested a quote
Avatar for PRIME SINE ELECTRIC, LLC
PRIME SINE ELECTRIC, LLC
5.0(
10
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Loudon, NH and surrounding areas

Approved

Free estimates

Credit card accepted

Offers commercial services

"I hired Prime Sine Electric LLC for a complete new electrical service and wiring on our 1937 home when purchased. It was in need of a complete gut-job. Spence did an amazing job bringing it up to today's standards. I mean, totally amazing transformation. Spence was professional the entire time through the quote process, customer service and final completion. He listened to our needs and gave input and helped us with planning the electrical needs of this old house. We can't recommend Spence enough and would hire him again in an instant."
22 neighbors recently requested a quote
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Showing 1-10 of 90
Generator Install questions, answered by experts

No, you should never plug a generator directly into a wall outlet in your house. This practice is extremely dangerous, often illegal, and can cause "back-feeding," where power from the generator flows back into utility lines, creating a life-threatening hazard for utility workers. It can also damage your home's electrical system, including appliances like pumps and HVAC fans. If the main power is restored while the generator is connected, it can destroy the generator and cause an electrical fire. To safely connect a generator, you must use a professionally installed transfer switch or an interlocking kit, which prevents back-feeding by disconnecting your home from the utility grid before the generator provides power.

A home that is 2,500 square feet will likely need a 20kW to 25kW generator. Consult your local generator installer to confirm the generator size needed to power your home before purchasing a new one. Be sure to consider how much power your necessary devices need to run.

In some situations, yes. Never try to put biofuel into any home generator without checking the specifics first. If a generator has the ability to run on diesel, it can also run pure biofuel (the clear kind made from seed oils, for example). But if you are using biofuel made from animal fats or vegetable oils, the generator will need significant modifications before it can handle a sludgier type of biofuel.

Sizing a generator is a careful process that requires calculating the electrical load of your entire house. You have to take into account every device you want to use and their wattage requirements, plus the wattage needed to start them, and look for a generator that can safely run all that at around 80% capacity.

In more practical terms, a small home can run on a 10,000-watt generator (and if you only want to power a few key appliances, much less than that). A mid-sized home may need something between 15,000 and 22,000 watts. Larger homes require 25,000 watts or more. 

Generally, you’ll want to keep between 60 and 70 feet between the generator and the transfer switch. There are a few reasons for this, including:

  • The distance reduces the noise coming from the generator into your home.

  • It increases efficiency because you won’t have a voltage drop from this short of a distance.

  • Prevents carbon monoxide poisoning: keep at least 15 feet between your generator and an open window. 

The Loudon, NH homeowners’ guide to generator installs

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