Get matched with top generator install pros in Wayland, 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: Do you have to turn off the main breaker when using a generator?

• <div><p>As a safety measure, you should always turn off the main breaker while operating your generator&rsquo;s backup breaker. In addition, you should also switch off all appliance breakers so you don't have a power surge when the main breaker turns back on. And finally, turning off the main breaker prevents back-feeding, which endangers utility workers with the risk of electrocution. Back-feeding could also destroy the electrical circuits of your neighbors if they use the same power network.</p></div>

Q: What is the life expectancy of a whole house generator?

• <div><p>Whole-house generators can last<b> 20 to 40 years</b> with normal operation and proper maintenance. If you look up the specifications for your generator, you may be able to find a lifespan rated in hours of operation. Life expectancy will vary depending on how often and for how long you use the generator each year. Choosing a fuel with low impact like natural gas or diesel can help generators last as long as possible.</p></div>

Q: How long does a whole-house generator last?

• <div><p>When maintained properly, a whole-house generator can last up to <b>20 years</b>. <a href="https://www.angi.com/articles/how-much-does-generator-repair-cost.htm">Costs to maintain and repair generators</a> vary by location and type of generator, but you can expect to pay about <b>$150 to $300 per year</b> for annual generator maintenance checks. An experienced generator service technician will inspect your generator&rsquo;s engine filter, starting mechanism, fuel, lubrication, and coolant levels to keep your generator in good working condition for as long as possible. </p></div>

Q: What size of diesel generator do you need to run a house?

• <div><p>Sizing a generator is a careful process that requires calculating the <a href="https://www.angi.com/articles/electrical-load-calculation.htm">electrical load</a> 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.</p><p>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. </p></div>

There are 15 highly-rated local generator install pros.

Verified Reviews for Generator Install pros in Wayland, MA

*The Angi rating for Generator Install companies in Wayland, 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 Wayland, 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 26, 2025

Reviewed in December 2024
I recently leased a Hyundai Ioniq 5, my first EV, and Joe installed a level 2 charger for us. He really knew his stuff regarding chargers and how to install them. He also upgraded our panel to provide a generator plug which I can use with the V2L feature of the car OR with a propane fueled...
Joseph Lapomardo, Electrician
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Reviewed in November 2023
After interviewing various home contractors, we hired AK General Services to turn our dilapidated porch into a four season room and also extend it. We are very happy with the work that was performed. We were kept in constant communication about timeframes and next steps and requirements. The...
AK General Services
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Reviewed in July 2023
Joe was very professional and did an amazing work for us installing the egress window and other work related projects. He takes his time to ensure the work is completed at the highest standards. Final inspections was passed in 10 minutes. He pulled a permit, completed the work in one week and...
Joseph McWhinnie
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Reviewed in September 2022
The two young men who performed the installation were informative, professional, cordial, and they left the scene spotless. There was a technical problem with the engine on the generator itself, which they weren't able to help with, because they weren't licensed to work on the specific brand of...
T K Lyden Electric & Generator, Inc.
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Reviewed in December 2018
Generally, prompt and friendly -competent electrician. Would use again.
Stephen Cappadona
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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 October 2016
Gene really connected with our son and inspired him to practice, excel, and enjoy playing the piano. He met my son exactly where he was developmentally and musically. Gene did not come with lesson plans or a set curriculum -- that allowed my son's musical interests to be accommodated and the...
Kellymusicworks
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Reviewed in January 2016
A prior owner of our house had a generator panel installed in the main electrical panel. I had Weston Electric come an inspect the installation and operation prior to using it myself. Norman was prompt in scheduling an appointment, showed up on time, and did the job i requested. He explained...
Weston Electric
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Reviewed in December 2014
Mr Frankselio Dasilva, the owner of Vallcher Construction, is very knowledgeable, and very professional. He is highly recommended for most any general contractor project.
Promax Builder Inc
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Reviewed in November 2014
Jean was very punctual and extremely professional. He evaluated the integrity of the tile flooring on his hands and knees, checking for loosening grout, cracked tiles, general safety issues. He found the flooring installation was not secure and some tiles were already cracked. Jean was very...
Century Carpet & Creative Floors Inc
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