Get matched with top generator install pros in Weymouth, MA

Q: Is it better to repair or replace a malfunctioning generator?

• <div><p>It&rsquo;s usually better to repair your generator if it isn&rsquo;t working properly, as it will typically be much more affordable and should yield similar results. Generator repairs cost around <b>$300</b> on average, while <a href="https://www.angi.com/articles/how-much-does-it-cost-install-generator.htm">installing a new whole-house generator costs</a> around <b>$5,000 </b>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.</p></div>

Q: What can I run on different generator sizes?

• <div><p>Here&rsquo;s what you can run with different wattages and types of generators:</p><p>Portable generator:</p><ul><li><p>2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers. </p></li><li><p>4,000 watts will keep two large appliances operating and a few smaller devices.</p></li><li><p>8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.</p></li></ul><p>Partial to whole-house generator:</p><ul><li><p>20,000 watts and above will make it seem like your home&rsquo;s power is still on.</p></li></ul><p></p></div>

Q: What’s the normal lifespan of a diesel generator?

• <div><p>You can expect a diesel generator to last for up to <b>30,000 hours of use</b>, 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. </p></div>

Q: What happens with the generator when the local power goes back on?

• <div><p>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&rsquo;ll simply need to shut off the generator and reset your circuit breaker once the local power comes back on.</p></div>

Q: What size generator do I need for my house?

• <div><p><a href="https://www.angi.com/articles/what-size-generator-do-i-need.htm">Generator size requirements</a> vary wildly among properties, but typical generator sizes are listed below based on home square footage:</p><ul><li><p>1,000 sq ft: 6&ndash;9 kW</p></li><li><p>1,500 sq ft: 7&ndash;10 kW</p></li><li><p>2,000 sq ft: 10&ndash;14kW</p></li><li><p>2,500 sq ft: 12&ndash;16kW</p></li><li><p>3,000 sq ft: 16&ndash;20kW+</p></li></ul><p>Unfortunately, home square footage isn&rsquo;t always a good indicator of generator size requirements. Instead, you should call in a professional to discuss which items in your home you&rsquo;d like to run via your generator. They can calculate peak and average consumption for those items and then size your generator appropriately for optimal performance.</p></div>

There are 8 highly-rated local generator install pros.

Verified Reviews for Generator Install pros in Weymouth, MA

*The Angi rating for Generator Install companies in Weymouth, MA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

*The HomeAdvisor rating for Generator Install companies in Weymouth, MA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

Last update on October 25, 2025

Reviewed in May 2024
Shawn is extremely professional and thorough. He does high quality work for a good price. Heâ s done all types of electrical work for us (generator install, fixtures, panel upgrade, etc) at two different homes and all his work is exceptional. Heâ s the only electrician Iâ ll work with.
Shawn Carneiro Robichaud Electrician
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Reviewed in April 2024
Amazing general cleaning with great attention to detail. Each of the workers were courteous and professional. If we ever need cleaning we know who to call!
Melo Cleaning
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Reviewed in April 2024
The guys are very generous and the service was perfect Ã¢Â Â¼Ã¯Â¸Â
C And G Cleaning Service
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Reviewed in April 2023
Christian and his crew are experts when it comes to tile, paver stones and masonry. Our patio was installed 20 years ago. There were stones that had buckled and risen out of their orginial places and the general slope of the patio when it was originally installed was not allowing for natural...
Dicapi Construction
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Reviewed in June 2019
ed was great, hard working and had a knack for what he was doing. i was a general contracter forty years and would not only would hire him ,but would make him one of my supervisors.
Grandpa's Handyman Service
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Reviewed in February 2018
Overall we are satisfied with the end results. Our cabinet installer sub contracted with this company last minute in an effort to get our kitchen done on schedule, and so that we could actually go see the granite before it was installed. The initial installers were prompt, and pleasant, but when...
CONTINENTAL STONE MARBLE GRANITE
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Reviewed in June 2017
Jake and Dave were great. Jake let me through everything as far as what was being treated outside as well as what he'd be spraying and laying bait down for inside the house (just general preventative measures, but also to treat the black ants). Took the time to explain and be very thorough....
Insight Pest Solutions
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Reviewed in July 2011
Hired Julio to install an above range microwave/hood. When he arrived, we also requested that he install a ceiling fan that we didn't mention on our initial call. He agreed to stay and install. While we were at the hardware store picking up a few items that the microwave required, we found a...
Julio Rivera Electrical Contractor
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Reviewed in August 2009
"Jim" Adams came to my house at the time and date we agreed upon. He inquired as exactly what I wanted done. He inspected the site, asked appropriate questions, and said that a proposal would be forth coming. I received a quote on the same day, and we agreed on a date/time to do the work....
Ferran Services & Contracting
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