Get matched with top generator install pros in Holliston, MA

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>

Q: What are the benefits of a portable generator?

• <div><p>Portable generators provide backup power for essential appliances during outages and are easy to relocate.</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: How close can a transfer switch be to a generator?

• <div><p>Generally, you&rsquo;ll want to keep between <b>60 and 70 feet</b> between the generator and the transfer switch. There are a few reasons for this, including:</p><ul><li><p>The distance reduces the noise coming from the generator into your home.</p></li><li><p>It increases efficiency because you won&rsquo;t have a voltage drop from this short of a distance.</p></li><li><p>Prevents carbon monoxide poisoning: keep at least 15 feet between your generator and an open window. </p></li></ul><p></p></div>

Q: Can you use biofuel in a whole-house generator?

• <div><p>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.</p></div>

There are 12 highly-rated local generator install pros.

Verified Reviews for Generator Install pros in Holliston, MA

*The Angi rating for Generator Install companies in Holliston, 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 Holliston, 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 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 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 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 October 2021
North Hill Development has done a great job of installing our resistance pool and creating a spa house/structure to go over it. This project required North Hill to coordinate with our spa vendor for a crane delivery, our town's conservation committee for clearance, and our architect for some...
North Hill Development Inc
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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 July 2016
Rodenhiser has generally done a fine job for us, but their prices are, on occasion, much too high...They would do a service to themselves and their customers if they were more moderate in their pricing...On this particular service, pricing was within bounds, but a recent previous service was out...
Rodenhiser Home Services, Inc.
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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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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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