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Avatar for Champion Electrical Services Inc
Champion Electrical Services Inc
5.0(
20
)

Serving Nantucket, MA and surrounding areas

In business since 2025

Free estimates

Emergency services offered

"Jason, has been an important resource for us over the last 7 years as we have renovated 2 old homes. Panel upgrades, wiring, appliance installation, stand by generator installation, electrical inspections etc. etc. He and his firm are very trustworthy, professional and skilled."
Avatar for Jarlath Galvin
Jarlath Galvin
4.7(
101
)

Serving Nantucket, MA and surrounding areas

In business since 2000

Free estimates

Small jobs welcome

"Galvin came for the installation of the Nest thermostat but started by first fixing my heating gas furnace before installing the thermostat. He is a great resource! I highly recommend him."
Response time4 hrs
Recommended by96%of homeowners
Avatar for All Phases Mechanical
All Phases Mechanical
4.5(
75
)

Serving Nantucket, MA and surrounding areas

In business since 1983

Free estimates

Emergency services offered

"Carl and Henry were fantastic to deal with. Up front and honest. The turn around time from first call to install was beyond fast. The guys removed my old system and installed new. Up and running same day. Friendly courteous guys and cleaned up ! Highly recommended"
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+6

Recommended by90%of homeowners
Avatar for Big D Energy Solutions
Big D Energy Solutions
5.0(
12
)

Serving Nantucket, MA and surrounding areas

In business since 2024

Free estimates

Emergency services offered

"Punctual and professional. All of the work was completed right on schedule. They upgraded my entire home and replaced electrical panel. Definitely hiring again; I have them scheduled to repair the sprinkler system electrical work and the fans in both my bathrooms. The cost was surprisingly affordable! I cannot recommend enough."
Electrical Project
Electrical Project
Electrical wiring upgrade
Electrical Project
Electrical Project

+74

Recommended by100%of homeowners
Avatar for Keding Electric
Keding Electric
4.9(
10
)

Serving Nantucket, MA and surrounding areas

In business since 2024

Free estimates

Emergency services offered

"I have hired Keding electrical on many projects on my home and the quality, consistency and timing of each project has been too notch. I look forward to working with Keding electrical for many more projects."
Response time1 day
Recommended by40%of homeowners
Cape Cod Independent Power
3.5(
13
)

Serving Nantucket, MA and surrounding areas

In business since 2005

Free estimates

Emergency services offered

"I have only good things to say about the good staff Patrick and James and Anthony and Jean in the office. The problem was with the Generac trickle charger for the battery which starts the generator when the power goes off. Patrick tracked the cause of the problem and Anthony fixed it in short order after a small delay in getting a new part. Jean in the office kept me informed and is very pleasant to deal with. This group all seem eager to please.
"
Recommended by75%of homeowners
Avatar for LifeCycle Transitions
LifeCycle Transitions
3.8(
175
)

Serving Nantucket, MA and surrounding areas

In business since 2007

Free estimates

Emergency services offered

"He was on-time, but was frustrated that there was no parking due to all the snow.  He was going to cancel, but we were able to find him a spot.  Initially he seemed a little annoyed with the circumstances, but ended up being really nice and helpful.  He had never installed a microwave before, so he was going through the directions along with me, but we got it up.  He patched up a hole we had, then a few shelves.  We ended up getting along really well, and he was kind enough to split his time within two visits, since we didn't have one of the items that we initially thought we would have. 
Overall it was a really good experience.  It was a rocky start, but after we got over the parking situation, he was professional, and really helpful with everything we needed from his end.
We were very happy with their service, thank you!
"
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+49

Recommended by77%of homeowners
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Generator Install questions, answered by experts

If you’re wondering whether gas generators produce carbon monoxide, know that natural gas generators do not produce carbon monoxide if they are functioning properly, as natural gas burns cleanly. However, if the generator malfunctions and the gas does not burn completely, there is potential for carbon dioxide to be produced. To prevent malfunctions, it's crucial to perform regular maintenance, including running the generator weekly and scheduling professional inspections every 6 to 12 months. Also, be sure to test your carbon monoxide detectors regularly to ensure they function in the rare case of the generator producing carbon monoxide.

Yes, in some locations, it is required by the National Electric Code (NEC) to have a transfer switch installed for electrical emergencies. In addition to following electrical code, generator transfer switches ensure your home is fully protected during a power outage. By switching the power from the main breaker to the generator breaker, you can seamlessly operate your HVAC, lights, appliances, devices, and more during an emergency. 

Here’s what you can run with different wattages and types of generators:

Portable generator:

  • 2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers. 

  • 4,000 watts will keep two large appliances operating and a few smaller devices.

  • 8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.

Partial to whole-house generator:

  • 20,000 watts and above will make it seem like your home’s power is still on.

Many services include assembling the unit and securing it in the window. Confirm with your provider.

A 10,000-watt generator can run a small to mid-sized central AC unit (typically up to 3 tons or 36,000 BTU) along with a few other appliances. However, larger AC units or additional loads will require a bigger generator. Consult a local generator installer to ensure you add the correct size generator to your home.

The Nantucket, MA homeowners’ guide to generator installs

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