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JMP Electric, LLC
4.9(
91
)
Portable Generator - Install

Serving Durham, CT and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"It was a pleasure to deal with this company. They are extremely knowledgeable in designing an electrical charging station in what was a difficult i situation. My breaker panel and garage were on opposite sides of my home. A solution was given at a reasonable price. I could not be happier. All work was done professionally with great attention to detail. If you are in need of electrical services, donâ t look any further. They are without a doubt, the best."
Response time5 hrs
Response rate85%
1 neighbors recently requested a quote
Avatar for JL Electric LLC
JL Electric LLC
5.0(
4
)
Fixed Generator - InstallFixed Generator - Repair

Serving Durham, CT and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

Are you looking for high quality, professional electrical work done at competitive prices?\n\nWith 18 years of experience, JL Electric provides residential, commericial, industrial and solar services including: removal and reinstallation of solar systems, service upgrades, generator hook up installation, general residential wiring and all other electrical needs!\n\nNow servicing all of CT, but local to Windham County! Let us provide high quality and reliable workmanship to your home or workplace!

Tesla Charger Install
Tesla Charger Install
Generator Transfer
Generator Transfer
Outside lights

+2

Electrical Connection, Inc.
4.6(
16
)
Fixed Generator - InstallPortable Generator - Install

Serving Durham, CT and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"Great service and Mark was professional at his work and explaining the problem. It wasn't the fan in the master bedroom that went bad, and he suspected the circuit GFI was tripped. We spent a little time to look for the failed GFI and was able to locate it in an odd place. The diagnostic price was a little expensive though."
 Service Van
 Generator Maintenance
Recommended by100%of homeowners
Avatar for Elevate Electric LLC
Elevate Electric LLC
5.0(
4
)
Portable Generator - Install

Serving Durham, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Credit card accepted

"The electrician Kyle was professional , honest and affordable. He was punctual and courteous. I hired him for the wiring and panel upgrade but I requested he change my six GFCI outlets and check the older outlets. He checked the outlets that I was worried about -they were good. He did need to replace a different inside outlet and 2 of the 4 outside outlets. He was kind and explained why they needed to be replaced. One just was no longer working. The other 2 were not up to code actually were a fire hazard. I am female senior citizen grateful I hired Elevate Electric."
Response time9 hrs
Avatar for Power Smart Electric LLC
Power Smart Electric LLC
5.0(
3
)
Fixed Generator - Install

Serving Durham, CT and surrounding areas

Approved

In business since 1998

Free estimates

Emergency services offered

"Great experience all around. Easy communication, came over, gave an estimate and was able to complete the project the same day at the quoted price. We will hire them again next time we need electrical work done."
Response time5 hrs
Response rate94%
1 neighbors recently requested a quote
Avatar for Handover Electric, LLC
Handover Electric, LLC
3.9(
4
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Durham, CT and surrounding areas

Approved

In business since 2000

Credit card accepted

Offers commercial services

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

Response time5 hrs
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Generator Install questions, answered by experts

An undersized whole-house generator has the potential to overheat and shut down when you try to run a central AC system. This scenario can not only damage the whole-house generator, but can also trip your home’s breakers or cause electrical damage. To avoid this situation, hire a local generator installer to correctly size your whole-house generator.

You can expect a diesel generator to last for up to 30,000 hours of use, which works out to 20 to 25 years with the proper maintenance, of course. That depends on how much you use it, so a diesel generator used for emergencies a couple of times a year will last a lot longer than a generator that takes over for a faulty electrical grid every month for a day or two. 

In many cases, yes. There are models called dual-fuel generators and fuel switches, but only between certain types of fuel. For example, with the right setup you can convert a generator from natural gas to propane. Some allow switching between diesel and gasoline. There are even tri-fuel generators available in some cases, which adds a large layer of security if you are worried about fuel availability in times of crisis. Always check your generator capabilities and manual instructions before trying to switch fuels. Some generators can use another fuel but may need a fuel conversion kit to prep them first.

The cost to install a whole-house generator averages $5,200, with a typical price range of $1,500 to $8,900. However, total costs can vary from $400 for a small portable unit to over $18,000 for a large-capacity system. The most significant cost factor is the generator's size and capacity, but other variables include the brand, fuel type, and labor for assembly and installation.

Generator costs can be broken down by type:

  • Portable or Emergency Backup Generators (1kW–7.5kW): $500 to $2,000

  • Partial-Home Generators (9kW–20kW): $2,000 to $6,500

  • Whole-House Generators (22kW–48kW): $5,000 to $18,000

To avoid paying for more power than you need, consider hiring an electrician to calculate the electrical load for your essential appliances. It is also recommended to get at least three quotes to find the best deal for your specific needs and budget.

While standby generators provide essential backup power, they can fail when you need them most due to lack of maintenance, fuel supply issues, dead batteries, electrical problems, or improper installation. To avoid costly failures, professional installation and regular maintenance are crucial. Licensed technicians ensure safety, uphold warranty requirements, comply with regulations, and provide expert servicing.

The Durham, CT homeowners’ guide to generator installs

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